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127-482: Soon after excavations of this site began in 1924, the significance of Dolní Věstonice became apparent. Thousands of ceramic artifacts, many of which depicted animals, were found associated with the site. The animals molded in the clay include lions, rhinoceroses, and mammoths. These figurines have been interpreted to have been of some ceremonial significance to the ancient occupants of the site. In addition to these artifacts, two figurines depicting women were found. One of

254-628: A ritual , and practices divination and healing . The word "shaman" probably originates from the Tungusic Evenki language of North Asia . According to Juha Janhunen, "the word is attested in all of the Tungusic idioms" such as Negidal , Lamut , Udehe / Orochi , Nanai , Ilcha, Orok , Manchu and Ulcha , and "nothing seems to contradict the assumption that the meaning 'shaman' also derives from Proto-Tungusic " and may have roots that extend back in time at least two millennia. The term

381-536: A Russian embassy to China; a translation of his book, published the same year, introduced the word shaman to English speakers. Anthropologist and archeologist Silvia Tomaskova argued that by the mid-1600s, many Europeans applied the Arabic term shaitan (meaning "devil") to the non-Christian practices and beliefs of Indigenous peoples beyond the Ural Mountains . She suggests that shaman may have entered

508-413: A comprehensive view in their mind which gives them certainty of knowledge . According to this view, the shaman uses (and the audience understands) multiple codes, expressing meanings in many ways: verbally, musically, artistically, and in dance. Meanings may be manifested in objects such as amulets . If the shaman knows the culture of their community well, and acts accordingly, their audience will know

635-413: A different term other than the one translated "shaman" is usually applied to a religious official leading sacrificial rites ("priest"), or to a raconteur ("sage") of traditional lore; there may be more of an overlap in functions (with that of a shaman), however, in the case of an interpreter of omens or of dreams. There are distinct types of shamans who perform more specialized functions. For example, among

762-698: A distinct genetic cluster which is the result of an admixture between 'Western' and 'Eastern' lineages, represented by the genomes of the c. 35,000 year-old Goyet Q116-1 individual from Belgium and the c. 34,000 year-old Sunghir individuals from Western Russia, respectively. The Věstonice individuals show greater affinity to the Sunghir individuals than to the Goyet Q116-1 individual, and can be modelled as approximately 64% Sunghir-related and 36% Goyet-Q116-related ancestry. The Y-chromosome observed among Vestonice 16 belonged to haplogroup C1a2 (V20+, V86+). In

889-505: A few hundred ohms . The major advantage of these is that they can dissipate a lot of energy, and they self-reset; after the voltage across the device drops below the threshold, its resistance returns to being high. This makes them ideal for surge-protection applications; as there is control over the threshold voltage and energy tolerance, they find use in all sorts of applications. The best demonstration of their ability can be found in electrical substations , where they are employed to protect

1016-514: A finer examination of the composition of ceramic artifacts and sherds to determine the source of the material and, through this, the possible manufacturing site. Key criteria are the composition of the clay and the temper used in the manufacture of the article under study: the temper is a material added to the clay during the initial production stage and is used to aid the subsequent drying process. Types of temper include shell pieces, granite fragments, and ground sherd pieces called ' grog '. Temper

1143-474: A fox pelt and red ochre . Such a burial is attributed to the relative importance of this individual to the people who occupied this site. Contrary to popular beliefs regarding the hunting practices of people living in the Upper Pleistocene , the inhabitants of this site did not solely chase mammoths with spears. Indentations of netting on the clay floors of the huts found at the site were preserved in

1270-422: A furnace, a pyroelectric crystal allowed to cool under no applied stress generally builds up a static charge of thousands of volts. Such materials are used in motion sensors , where the tiny rise in temperature from a warm body entering the room is enough to produce a measurable voltage in the crystal. In turn, pyroelectricity is seen most strongly in materials that also display the ferroelectric effect , in which

1397-669: A glassy surface, making a vessel less pervious to water. Ceramic artifacts have an important role in archaeology for understanding the culture, technology, and behavior of peoples of the past. They are among the most common artifacts to be found at an archaeological site, generally in the form of small fragments of broken pottery called sherds . The processing of collected sherds can be consistent with two main types of analysis: technical and traditional. The traditional analysis involves sorting ceramic artifacts, sherds, and larger fragments into specific types based on style, composition, manufacturing, and morphology. By creating these typologies, it

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1524-492: A rotation process called "throwing"), slip casting , tape casting (used for making very thin ceramic capacitors), injection molding , dry pressing, and other variations. Many ceramics experts do not consider materials with an amorphous (noncrystalline) character (i.e., glass) to be ceramics, even though glassmaking involves several steps of the ceramic process and its mechanical properties are similar to those of ceramic materials. However, heat treatments can convert glass into

1651-434: A semi-crystalline material known as glass-ceramic . Traditional ceramic raw materials include clay minerals such as kaolinite , whereas more recent materials include aluminium oxide, more commonly known as alumina . Modern ceramic materials, which are classified as advanced ceramics, include silicon carbide and tungsten carbide . Both are valued for their abrasion resistance and are therefore used in applications such as

1778-479: A shaman (and by extension the earliest undisputed evidence of shamans and shamanic practices) dates back to the early Upper Paleolithic era (c. 30,000 BP) in what is now the Czech Republic. Sanskrit scholar and comparative mythologist Michael Witzel proposes that all of the world's mythologies, and also the concepts and practices of shamans, can be traced to the migrations of two prehistoric populations:

1905-448: A shaman is exposed to significant personal risk as shamanic plant materials can be toxic or fatal if misused. Spells are commonly used in an attempt to protect against these dangers, and the use of more dangerous plants is often very highly ritualized. Generally, shamans traverse the axis mundi and enter the "spirit world" by effecting a transition of consciousness, entering into an ecstatic trance, either autohypnotically or through

2032-447: A shaman may include either guiding to their proper abode the souls of the dead (which may be guided either one-at-a-time or in a group, depending on the culture), and the curing of ailments. The ailments may be either purely physical afflictions—such as disease, which are claimed to be cured by gifting, flattering, threatening, or wrestling the disease-spirit (sometimes trying all these, sequentially), and which may be completed by displaying

2159-423: A signal). The unit of time measured is the natural interval required for electricity to be converted into mechanical energy and back again. The piezoelectric effect is generally stronger in materials that also exhibit pyroelectricity , and all pyroelectric materials are also piezoelectric. These materials can be used to inter-convert between thermal, mechanical, or electrical energy; for instance, after synthesis in

2286-559: A single concept. Billy-Ray Belcourt, an author and award-winning scholar from the Driftpile Cree Nation in Canada, argues that using language with the intention of simplifying culture that is diverse, such as Shamanism, as it is prevalent in communities around the world and is made up of many complex components, works to conceal the complexities of the social and political violence that Indigenous communities have experienced at

2413-487: A specialist can influence important but uncontrollable outcomes. Citing work on the psychology of magic and superstition , Singh argues that humans search for ways of influencing uncertain events, such as healing illness, controlling rain, or attracting animals. As specialists compete to help their clients control these outcomes, they drive the evolution of psychologically compelling magic, producing traditions adapted to people's cognitive biases. Shamanism, Singh argues,

2540-403: A spirit can be summoned it must teach the shaman its song. The use of totemic items such as rocks with special powers and an animating spirit is common. Such practices are presumably very ancient. Plato wrote in his Phaedrus that the "first prophecies were the words of an oak", and that those who lived at that time found it rewarding enough to "listen to an oak or a stone, so long as it

2667-418: A stable electric dipole can be oriented or reversed by applying an electrostatic field. Pyroelectricity is also a necessary consequence of ferroelectricity. This can be used to store information in ferroelectric capacitors , elements of ferroelectric RAM . The most common such materials are lead zirconate titanate and barium titanate . Aside from the uses mentioned above, their strong piezoelectric response

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2794-408: A supposedly extracted token of the disease-spirit (displaying this, even if "fraudulent", is supposed to impress the disease-spirit that it has been, or is in the process of being, defeated so that it will retreat and stay out of the patient's body), or else mental (including psychosomatic) afflictions—such as persistent terror, which is likewise believed to be cured by similar methods. In most languages

2921-479: A world-view behind them. Analogously to the way grammar arranges words to express meanings and convey a world, also this formed a cognitive map). Shaman's lore is rooted in the folklore of the community, which provides a "mythological mental map." Juha Pentikäinen uses the concept "grammar of mind." Armin Geertz coined and introduced the hermeneutics , or "ethnohermeneutics", interpretation. Hoppál extended

3048-405: Is an open-air site located along a stream. Its people hunted mammoths and other herd animals, saving mammoth and other bones that could be used to construct a fence-like boundary, separating the living space into a distinct inside and outside. In this way, the perimeter of the site would be easily distinguishable. At the center of the enclosure was a large bonfire and huts were grouped together within

3175-671: Is any of the various hard, brittle , heat-resistant , and corrosion-resistant materials made by shaping and then firing an inorganic, nonmetallic material, such as clay , at a high temperature. Common examples are earthenware , porcelain , and brick . The earliest ceramics made by humans were fired clay bricks used for building house walls and other structures. Other pottery objects such as pots, vessels, vases and figurines were made from clay , either by itself or mixed with other materials like silica , hardened by sintering in fire. Later, ceramics were glazed and fired to create smooth, colored surfaces, decreasing porosity through

3302-467: Is employed. Ice templating allows the creation of macroscopic pores in a unidirectional arrangement. The applications of this oxide strengthening technique are important for solid oxide fuel cells and water filtration devices. To process a sample through ice templating, an aqueous colloidal suspension is prepared to contain the dissolved ceramic powder evenly dispersed throughout the colloid, for example Yttria-stabilized zirconia (YSZ). The solution

3429-468: Is exploited in the design of high-frequency loudspeakers , transducers for sonar , and actuators for atomic force and scanning tunneling microscopes . Temperature increases can cause grain boundaries to suddenly become insulating in some semiconducting ceramic materials, mostly mixtures of heavy metal titanates . The critical transition temperature can be adjusted over a wide range by variations in chemistry. In such materials, current will pass through

3556-518: Is known as the "neurotheological theory". According to Winkelman, shamanism develops reliably in human societies because it provides valuable benefits to the practitioner, their group, and individual clients. In particular, the trance states induced by dancing, hallucinogens, and other triggers are hypothesized to have an "integrative" effect on cognition, allowing communication among mental systems that specialize in theory of mind , social intelligence, and natural history. With this cognitive integration,

3683-407: Is no record of pure shamanistic societies (although their existence is not impossible). Norwegian social anthropologist Hakan Rydving has likewise argued for the abandonment of the terms "shaman" and "shamanism" as "scientific illusions." Dulam Bumochir has affirmed the above critiques of "shamanism" as a Western construct created for comparative purposes and, in an extensive article, has documented

3810-480: Is not understood, but there are two major families of superconducting ceramics. Piezoelectricity , a link between electrical and mechanical response, is exhibited by a large number of ceramic materials, including the quartz used to measure time in watches and other electronics. Such devices use both properties of piezoelectrics, using electricity to produce a mechanical motion (powering the device) and then using this mechanical motion to produce electricity (generating

3937-474: Is possible that the woman was attributed with great importance and wisdom, and revered because of her age. Because of her advanced age, it is also possible she had a decreased ability to care for herself, instead relying on her family group to care for her, which indicates strong social connections. Furthermore, a female figurine was found at the site and is believed to be associated with the aged woman, because of remarkably similar facial characteristics. The woman

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4064-491: Is possible to distinguish between different cultural styles, the purpose of the ceramic, and the technological state of the people, among other conclusions. Besides, by looking at stylistic changes in ceramics over time, it is possible to separate (seriate) the ceramics into distinct diagnostic groups (assemblages). A comparison of ceramic artifacts with known dated assemblages allows for a chronological assignment of these pieces. The technical approach to ceramic analysis involves

4191-568: Is responsible for such diverse optical phenomena as night-vision and IR luminescence . Thus, there is an increasing need in the military sector for high-strength, robust materials which have the capability to transmit light ( electromagnetic waves ) in the visible (0.4 – 0.7 micrometers) and mid- infrared (1 – 5 micrometers) regions of the spectrum. These materials are needed for applications requiring transparent armor, including next-generation high-speed missiles and pods, as well as protection against improvised explosive devices (IED). In

4318-502: Is roughly three inches high. The subject appears to be a young man with heavy bone structure, thick, long hair reaching past his shoulders, and possibly traces of a beard. Originally found in 1891, there was concern that the finding might be a hoax. Particle spectrometry analysis conducted at the University of Kansas Space Technology Center placed the date of the carved surface of the ivory at around 26,000 BP. A carved ivory figure in

4445-729: Is the culmination of this cultural evolutionary process—a psychologically appealing method for controlling uncertainty. For example, some shamanic practices exploit our intuitions about humanness: Practitioners use trance and dramatic initiations to seemingly become entities distinct from normal humans and thus more apparently capable of interacting with the invisible forces believed to oversee important outcomes. Influential cognitive and anthropological scientists, such as Pascal Boyer and Nicholas Humphrey , have endorsed Singh's approach, although other researchers have criticized Singh's dismissal of individual- and group-level benefits. Gerardo Reichel-Dolmatoff relates these concepts to developments in

4572-425: Is then cooled from the bottom to the top on a platform that allows for unidirectional cooling. This forces ice crystals to grow in compliance with the unidirectional cooling, and these ice crystals force the dissolved YSZ particles to the solidification front of the solid-liquid interphase boundary, resulting in pure ice crystals lined up unidirectionally alongside concentrated pockets of colloidal particles. The sample

4699-475: Is then heated and at the same the pressure is reduced enough to force the ice crystals to sublime and the YSZ pockets begin to anneal together to form macroscopically aligned ceramic microstructures. The sample is then further sintered to complete the evaporation of the residual water and the final consolidation of the ceramic microstructure. During ice-templating, a few variables can be controlled to influence

4826-472: Is typically somewhere between the minimum wavelength of visible light and the resolution limit of the naked eye. The microstructure includes most grains, secondary phases, grain boundaries, pores, micro-cracks, structural defects, and hardness micro indentions. Most bulk mechanical, optical, thermal, electrical, and magnetic properties are significantly affected by the observed microstructure. The fabrication method and process conditions are generally indicated by

4953-399: Is usually identified by microscopic examination of the tempered material. Clay identification is determined by a process of refiring the ceramic and assigning a color to it using Munsell Soil Color notation. By estimating both the clay and temper compositions and locating a region where both are known to occur, an assignment of the material source can be made. Based on the source assignment of

5080-444: Is usually to direct spirits or spiritual energies into the physical world for the purpose of healing, divination , or to aid human beings in some other way. Beliefs and practices categorized as "shamanic" have attracted the interest of scholars from a variety of disciplines, including anthropologists, archeologists, historians, religious studies scholars, philosophers and psychologists. Hundreds of books and academic papers on

5207-473: Is virtually lossless. Optical waveguides are used as components in Integrated optical circuits (e.g. light-emitting diodes , LEDs) or as the transmission medium in local and long haul optical communication systems. Also of value to the emerging materials scientist is the sensitivity of materials to radiation in the thermal infrared (IR) portion of the electromagnetic spectrum . This heat-seeking ability

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5334-529: The Inuit the angakkuq (shamans) fetch the souls of game from remote places, or soul travel to ask for game from mythological beings like the Sea Woman . The way shamans get sustenance and take part in everyday life varies across cultures. In many Inuit groups, they provide services for the community and get a "due payment", and believe the payment is given to the helping spirits. An account states that

5461-504: The Nanai people , a distinct kind of shaman acts as a psychopomp. Other specialized shamans may be distinguished according to the type of spirits, or realms of the spirit world, with which the shaman most commonly interacts. These roles vary among the Nenets , Enets , and Selkup shamans. The assistant of an Oroqen shaman (called jardalanin , or "second spirit") knows many things about

5588-701: The Sanskrit word श्रमण , śramaṇa , designating a wandering monastic or holy figure, has spread to many Central Asian languages along with Buddhism and could be the ultimate origin of the word shaman. The word has been reported in Gandhari as ṣamana , in Tocharian A as ṣāmaṃ , in Tocharian B as ṣamāne and in Chinese as 沙門 , shāmén . The term was adopted by Russians interacting with

5715-496: The Tucano people , a sophisticated system exists for environmental resources management and for avoiding resource depletion through overhunting. This system is conceptualized mythologically and symbolically by the belief that breaking hunting restrictions may cause illness. The shaman is able to "release" game animals, or their souls, from their hidden abodes. The Piaroa people have ecological concerns related to shamanism. Among

5842-426: The spiritual world or dimension. Most shamans have dreams or visions that convey certain messages. Shamans may claim to have or have acquired many spirit guides , who they believe guide and direct them in their travels in the spirit world. These spirit guides are always thought to be present within the shaman, although others are said to encounter them only when the shaman is in a trance . The spirit guide energizes

5969-555: The " Gondwana " type (of circa 65,000 years ago) and the " Laurasian " type (of circa 40,000 years ago). In November 2008, researchers from the Hebrew University of Jerusalem announced the discovery of a 12,000-year-old site in Israel that is perceived as one of the earliest-known shaman burials. The elderly woman had been arranged on her side, with her legs apart and folded inward at the knee. Ten large stones were placed on

6096-482: The 18th-century writings of Tibetan Buddhist monks in Mongolia and later "probably influenced the formation of European discourse on Shamanism". Shamanism is a system of religious practice. Historically, it is often associated with Indigenous and tribal societies , and involves belief that shamans, with a connection to the otherworld , have the power to heal the sick, communicate with spirits, and escort souls of

6223-886: The 1960s, scientists at General Electric (GE) discovered that under the right manufacturing conditions, some ceramics, especially aluminium oxide (alumina), could be made translucent . These translucent materials were transparent enough to be used for containing the electrical plasma generated in high- pressure sodium street lamps. During the past two decades, additional types of transparent ceramics have been developed for applications such as nose cones for heat-seeking missiles , windows for fighter aircraft , and scintillation counters for computed tomography scanners. Other ceramic materials, generally requiring greater purity in their make-up than those above, include forms of several chemical compounds, including: For convenience, ceramic products are usually divided into four main types; these are shown below with some examples: Frequently,

6350-404: The Czech Republic indicate that the weavers of Upper Palaeolithic were using a variety of techniques that enabled them to produce plaited basketry, nets, and sophisticated twined and plain woven cloth. A burial of an approximately forty-year-old woman was found at Dolní Věstonice in an elaborate burial setting. Various items found with the woman have had a profound impact on the interpretation of

6477-532: The Hall-Petch equation, hardness , toughness , dielectric constant , and the optical properties exhibited by transparent materials . Ceramography is the art and science of preparation, examination, and evaluation of ceramic microstructures. Evaluation and characterization of ceramic microstructures are often implemented on similar spatial scales to that used commonly in the emerging field of nanotechnology: from nanometers to tens of micrometers (µm). This

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6604-582: The Upper Paleolithic in Europe . She also describes why elderly people were highly influential in society. Grandparents assisted in childcare, perpetuated cultural transmission , and contributed to the increased complexity of stone tools . The woman found at Dolní Věstonice was old enough to have been a grandparent. Although human lifespans were increasing, elderly individuals in Upper Paleolithic societies were still relatively rare. Because of this, it

6731-483: The Vestonice 13 sample, the Y chromosomal haplogroup CT (not IJK-L16) (CTS109+, CTS5318+, CTS6327+, CTS8243+, CTS9556+, Z17718+, Y1571+, M5831+) was determined, for the Vestonice 14 sample, the Y chromosome haplogroup I (L758+), for the Vestonice 15 sample, the Y chromosome haplogroup BT (PF1178+), and for the Vestonice 43 sample, the Y chromosome haplogroup F (not I) (P145+, P158+). Ceramic A ceramic

6858-489: The archaeological record when the structures burned down, hardening the clay. These indentations strongly suggest that these people were using nets to catch smaller prey in addition to hunting mammoths with spears. Finally, shells found at the site have been shown to originate from the Mediterranean , suggesting these people either traveled to collect them or were trade partners with other groups nearby. Dolní Věstonice

6985-494: The artifact, further investigations can be made into the site of manufacture. The physical properties of any ceramic substance are a direct result of its crystalline structure and chemical composition. Solid-state chemistry reveals the fundamental connection between microstructure and properties, such as localized density variations, grain size distribution, type of porosity, and second-phase content, which can all be correlated with ceramic properties such as mechanical strength σ by

7112-404: The associated beliefs. He or she accompanies the rituals and interprets the behaviors of the shaman. Despite these functions, the jardalanin is not a shaman. For this interpretative assistant, it would be unwelcome to fall into a trance. As the primary teacher of tribal symbolism, the shaman may have a leading role in this ecological management, actively restricting hunting and fishing. Among

7239-577: The barrier of the bone fence. The so-called Wolf bone is a prehistoric artifact discovered in 1937 during excavations led by Karel Absolon . Dated to the Aurignacian , approximately 30,000 years ago, the bone is marked with 55 marks which some believe to be tally marks . The head of an ivory Venus figurine was excavated close to the bone. At an isolated site 80 meters upstream lies a lean-to shelter dug into an embankment. An estimated 2,300 clay figurines of various animals were found in and around

7366-513: The brightness and contrast of a digital image. Guided lightwave transmission via frequency selective waveguides involves the emerging field of fiber optics and the ability of certain glassy compositions as a transmission medium for a range of frequencies simultaneously ( multi-mode optical fiber ) with little or no interference between competing wavelengths or frequencies. This resonant mode of energy and data transmission via electromagnetic (light) wave propagation , though low powered,

7493-683: The calling of a shaman can be found in the case history of Chuonnasuan , who was one of the last shamans among the Tungus peoples in Northeast China . The wounded healer is an archetype for a shamanic trial and journey. This process is important to young shamans. They undergo a type of sickness that pushes them to the brink of death. This is said to happen for two reasons: Shamans may employ varying materials in spiritual practice in different cultures. Shamans have been conceptualized as those who are able to gain knowledge and power to heal in

7620-418: The ceramic family. Highly oriented crystalline ceramic materials are not amenable to a great range of processing. Methods for dealing with them tend to fall into one of two categories: either making the ceramic in the desired shape by reaction in situ or "forming" powders into the desired shape and then sintering to form a solid body. Ceramic forming techniques include shaping by hand (sometimes including

7747-471: The chemical erosion that occurs in other materials subjected to acidic or caustic environments. Ceramics generally can withstand very high temperatures, ranging from 1,000 °C to 1,600 °C (1,800 °F to 3,000 °F). The crystallinity of ceramic materials varies widely. Most often, fired ceramics are either vitrified or semi-vitrified, as is the case with earthenware, stoneware , and porcelain. Varying crystallinity and electron composition in

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7874-534: The class of ceramic matrix composite materials, in which ceramic fibers are embedded and with specific coatings are forming fiber bridges across any crack. This mechanism substantially increases the fracture toughness of such ceramics. Ceramic disc brakes are an example of using a ceramic matrix composite material manufactured with a specific process. Scientists are working on developing ceramic materials that can withstand significant deformation without breaking. A first such material that can deform in room temperature

8001-514: The community, including the spirits of the deceased. Shamans believe they can communicate with both living and dead to alleviate unrest, unsettled issues, and to deliver gifts to the spirits. Shamans perform a variety of functions depending upon their respective cultures; healing, leading a sacrifice , preserving traditions by storytelling and songs, fortune-telling , and acting as a psychopomp ("guide of souls"). A single shaman may fulfill several of these functions. The responsibilities of

8128-503: The dead to the afterlife . The origins of Shamanism stem from indigenous peoples of far northern Europe and Siberia. Despite structural implications of colonialism and imperialism that have limited the ability of Indigenous peoples to practice traditional spiritualities, many communities are undergoing resurgence through self-determination and the reclamation of dynamic traditions. Other groups have been able to avoid some of these structural impediments by virtue of their isolation, such as

8255-503: The earliest examples of fired clay sculptures, including the Venus of Dolní Věstonice , and date back to 26,000 BP. The female figurine is a ceramic statuette depiction of a wide-hipped, nude female. This figurine is similar to other figurines found throughout the area at nearby archaeological sites such as Willendorf and the Caves of Grimaldi (see Grimaldi Man ). In 2004, a tomograph scan of

8382-457: The electrical properties that show grain boundary effects. One of the most widely used of these is the varistor. These are devices that exhibit the property that resistance drops sharply at a certain threshold voltage . Once the voltage across the device reaches the threshold, there is a breakdown of the electrical structure in the vicinity of the grain boundaries, which results in its electrical resistance dropping from several megohms down to

8509-464: The fact that they exist outside of what is defined as shamanism and even play similar roles in nonshamanic cultures, for example chanting in the Abrahamic religions . She argues that these expression are unique to each culture that uses them and that such practices cannot be generalized easily, accurately, or usefully into a global religion of shamanism. Because of this, Kehoe is also highly critical of

8636-445: The figure was an intentional depiction of this specific individual. The bones and the earth surrounding the body contained traces of red ochre, a flint spearhead had been placed near the skull, and one hand held the body of a fox. This evidence suggests that this was the burial site of a shaman . This is the oldest site not only of ceramic figurines and artistic portraiture, but also of evidence of female shamans. During an excavation at

8763-493: The figurine showed a fingerprint of a child who must have handled it before it was fired. A majority of the clay figurines at Dolní Věstonice were found around either the dugout or the central fire pit located within the site. Particularly striking is a sculpture which may represent the first example of portraiture (i.e., representation of a specific person). The majority of anthropomorphic figures on this site bear no distinct facial features, but this figure, carved in mammoth ivory,

8890-478: The figurines and found that, "it is womanhood, rather than motherhood that is symbolically recognized or honored" (Rice 1981: 402). This interpretation challenged the widely held assumption that all prehistoric female figurines were created to honor fertility. Three inhabitants of Dolní Věstonice, lived 31,155 years ago (calibrated date) and were found to have mitochondrial haplogroup U , and one inhabitant mitochondrial haplogroup U8 . The Věstonice individuals form

9017-469: The figurines, known as the Black Venus, was found on a hillside amongst charred mammoth bones; the other depicted a woman with a deformed face. Speculation regarding the relation of the second Venus figurine with a woman buried at the site, who had a deformation on the same side of the face, may imply a connection between the two. This woman’s skeleton was found buried under the scapula of a mammoth, with

9144-410: The following: Shamanism is based on the premise that the visible world is pervaded by invisible forces or spirits which affect the lives of the living. Although the causes of disease lie in the spiritual realm, inspired by malicious spirits, both spiritual and physical methods are used to heal. Commonly, a shaman "enters the body" of the patient to confront the spiritual infirmity and heals by banishing

9271-429: The frontal sinus, specific auditory exostoses, and impaction of the upper wisdom teeth. Each individual is believed to be about 16–25 years old at the time of death. The central body suffers from a genetic pathology resulting in the curved form of his legs. Red ochre, a pigment commonly used for rituals, was found over the pelvis. Imprints of textiles pressed into clay were found at the site. Evidence from several sites in

9398-401: The gifts and payments that a shaman receives are given by his partner spirit. Since it obliges the shaman to use his gift and to work regularly in this capacity, the spirit rewards him with the goods that it receives. These goods, however, are only "welcome addenda". They are not enough to enable a full-time shaman. Shamans live like any other member of the group, as a hunter or housewife. Due to

9525-460: The group as a whole. General properties such as high melting temperature, high hardness, poor conductivity, high moduli of elasticity , chemical resistance, and low ductility are the norm, with known exceptions to each of these rules ( piezoelectric ceramics , low glass transition temperature ceramics, superconductive ceramics ). Composites such as fiberglass and carbon fiber , while containing ceramic materials, are not considered to be part of

9652-407: The hands of settlers. Belcourt argues that language used to imply “simplicity” in regards to Indigenous culture, is a tool used to belittle Indigenous cultures, as it views Indigenous communities solely as a result of a history embroiled in violence, that leaves Indigenous communities only capable of simplicity and plainness. Anthropologist Mihály Hoppál  [ de ] also discusses whether

9779-408: The head, pelvis, and arms. Among her unusual grave goods were 50 complete tortoise shells, a human foot, and certain body parts from animals such as a cow tail and eagle wings. Other animal remains came from a boar, leopard, and two martens. "It seems that the woman … was perceived as being in a close relationship with these animal spirits", researchers noted. The grave was one of at least 28 graves at

9906-484: The human soul caused by foreign elements. Shamans operate primarily within the spiritual world, which, they believe, in turn affects the human world. The restoration of balance is said to result in the elimination of the ailment. The anthropologist Alice Kehoe criticizes the term "shaman" in her book Shamans and Religion: An Anthropological Exploration in Critical Thinking . Part of this criticism involves

10033-485: The human world and the spirit worlds. Shamans are said to treat ailments and illnesses by mending the soul. Alleviating traumas affecting the soul or spirit are believed to restore the physical body of the individual to balance and wholeness. Shamans also claim to enter supernatural realms or dimensions to obtain solutions to problems afflicting the community. Shamans claim to visit other worlds or dimensions to bring guidance to misguided souls and to ameliorate illnesses of

10160-490: The hunt; or entertainment ( Inuit throat singing ). Shamans often claim to have been called through dreams or signs. However, some say their powers are inherited. In traditional societies shamanic training varies in length, but generally takes years. Turner and colleagues mention a phenomenon called "shamanistic initiatory crisis", a rite of passage for shamans-to-be, commonly involving physical illness or psychological crisis. The significant role of initiatory illnesses in

10287-504: The hypothesis that shamanism is an ancient, unchanged, and surviving religion from the Paleolithic period. The term has been criticized for its perceived colonial roots, and as a tool to perpetuate perceived contemporary linguistic colonialism. By Western scholars, the term "shamanism" is used to refer to a variety of different cultures and practices around the world, which can vary dramatically and may not be accurately represented by

10414-594: The indigenous peoples in Siberia . It is found in the memoirs of the exiled Russian churchman Avvakum . It was brought to Western Europe twenty years later by the Dutch statesman Nicolaes Witsen , who reported his stay and journeys among the Tungusic- and Samoyedic -speaking Indigenous peoples of Siberia in his book Noord en Oost Tataryen (1692). Adam Brand , a merchant from Lübeck , published in 1698 his account of

10541-508: The infectious spirit. Many shamans have expert knowledge of medicinal plants native to their area, and an herbal treatment is often prescribed. In many places shamans learn directly from the plants, harnessing their effects and healing properties, after obtaining permission from the indwelling or patron spirits. In the Peruvian Amazon Basin, shamans and curanderos use medicine songs called icaros to evoke spirits. Before

10668-632: The infrastructure from lightning strikes. They have rapid response, are low maintenance, and do not appreciably degrade from use, making them virtually ideal devices for this application. Semiconducting ceramics are also employed as gas sensors . When various gases are passed over a polycrystalline ceramic, its electrical resistance changes. With tuning to the possible gas mixtures, very inexpensive devices can be produced. Under some conditions, such as extremely low temperatures, some ceramics exhibit high-temperature superconductivity (in superconductivity, "high temperature" means above 30 K). The reason for this

10795-468: The ionic and covalent bonds cause most ceramic materials to be good thermal and electrical insulators (researched in ceramic engineering ). With such a large range of possible options for the composition/structure of a ceramic (nearly all of the elements, nearly all types of bonding, and all levels of crystallinity), the breadth of the subject is vast, and identifiable attributes ( hardness , toughness , electrical conductivity ) are difficult to specify for

10922-435: The local variations and emphasizes that shamanism is not a religion of sacred dogmas , but linked to the everyday life in a practical way. Following similar thoughts, he also conjectures a contemporary paradigm shift. Piers Vitebsky also mentions that, despite really astonishing similarities, there is no unity in shamanism. The various, fragmented shamanistic practices and beliefs coexist with other beliefs everywhere. There

11049-486: The material near its critical temperature, the dielectric effect remains exceptionally strong even at much higher temperatures. Titanates with critical temperatures far below room temperature have become synonymous with "ceramic" in the context of ceramic capacitors for just this reason. Optically transparent materials focus on the response of a material to incoming light waves of a range of wavelengths. Frequency selective optical filters can be utilized to alter or enhance

11176-445: The material until joule heating brings it to the transition temperature, at which point the circuit will be broken and current flow will cease. Such ceramics are used as self-controlled heating elements in, for example, the rear-window defrost circuits of automobiles. At the transition temperature, the material's dielectric response becomes theoretically infinite. While a lack of temperature control would rule out any practical use of

11303-410: The mechanical performance of materials and components. It applies the physics of stress and strain , in particular the theories of elasticity and plasticity , to the microscopic crystallographic defects found in real materials in order to predict the macroscopic mechanical failure of bodies. Fractography is widely used with fracture mechanics to understand the causes of failures and also verify

11430-412: The microstructure. The root cause of many ceramic failures is evident in the cleaved and polished microstructure. Physical properties which constitute the field of materials science and engineering include the following: Mechanical properties are important in structural and building materials as well as textile fabrics. In modern materials science , fracture mechanics is an important tool in improving

11557-541: The nomadic Tuvan (with an estimated population of 3000 people surviving from this tribe). Tuva is one of the most isolated Asiatic tribes in Russia where the art of shamanism has been preserved until today due to its isolated existence, allowing it to be free from the influences of other major religions. There are many variations of shamanism throughout the world, but several common beliefs are shared by all forms of shamanism. Common beliefs identified by Eliade (1972) are

11684-602: The notion of cultural appropriation . This includes criticism of New Age and modern Western forms of shamanism, which, according to Kehoe, misrepresent or dilute Indigenous practices. Kehoe also believes that the term reinforces racist ideas such as the noble savage . Kehoe is highly critical of Mircea Eliade 's work on shamanism as an invention synthesized from various sources unsupported by more direct research. To Kehoe, citing practices such as drumming , trance, chanting , entheogen and hallucinogen use, spirit communication , and healing as definitive of shamanism ignores

11811-498: The popularity of ayahuasca tourism in South America, there are practitioners in areas frequented by backpackers who make a living from leading ceremonies. Furthermore, due to the predominant number of female shamans over males, shamanism was and continues to be an integral part of women’s economic liberation. Shamanism often serves as an economic resource due to the requirement of payment for service. This economic revenue

11938-718: The pore size and morphology of the microstructure. These important variables are the initial solids loading of the colloid, the cooling rate, the sintering temperature and duration, and the use of certain additives which can influence the microstructural morphology during the process. A good understanding of these parameters is essential to understanding the relationships between processing, microstructure, and mechanical properties of anisotropically porous materials. Some ceramics are semiconductors . Most of these are transition metal oxides that are II-VI semiconductors, such as zinc oxide . While there are prospects of mass-producing blue LEDs from zinc oxide, ceramicists are most interested in

12065-465: The raw materials of modern ceramics do not include clays. Those that do have been classified as: Ceramics can also be classified into three distinct material categories: Each one of these classes can be developed into unique material properties. Shaman Shamanism is a spiritual practice that involves a practitioner ( shaman ) interacting with the spirit world through altered states of consciousness , such as trance . The goal of this

12192-503: The remains of a kiln . It may be one of the first instances of a covered oven, hot enough to fire clay. Most of the figurines were broken and found in fragments. General consensus agrees that they were likely intentionally and perhaps ritualistically broken, but offers no conclusive reason. One hypothesis posits that these figurines had magical significance, and were intentionally fashioned from wet clay so that they would explode when fired. The Dolní Věstonice artifacts also include some of

12319-434: The role of Mongols themselves, particularly "the partnership of scholars and shamans in the reconstruction of shamanism" in post-1990/post-communist Mongolia. This process has also been documented by Swiss anthropologist Judith Hangartner in her landmark study of Darhad shamans in Mongolia. Historian Karena Kollmar-Polenz argues that the social construction and reification of shamanism as a religious "other" actually began with

12446-694: The root ceram- is the Mycenaean Greek ke-ra-me-we , workers of ceramic, written in Linear B syllabic script. The word ceramic can be used as an adjective to describe a material, product, or process, or it may be used as a noun, either singular or, more commonly, as the plural noun ceramics . Ceramic material is an inorganic, metallic oxide, nitride, or carbide material. Some elements, such as carbon or silicon , may be considered ceramics. Ceramic materials are brittle, hard, strong in compression, and weak in shearing and tension. They withstand

12573-407: The shaman can better predict the movement of animals, resolve group conflicts, plan migrations, and provide other useful services. The neurotheological theory contrasts with the "by-product" or "subjective" model of shamanism developed by Harvard anthropologist Manvir Singh. According to Singh, shamanism is a cultural technology that adapts to (or hacks) our psychological biases to convince us that

12700-415: The shamans, enabling them to enter the spiritual dimension. Shamans claim to heal within the communities and the spiritual dimension by returning lost parts of the human soul from wherever they have gone. Shamans also claim to cleanse excess negative energies, which are said to confuse or pollute the soul. Shamans act as mediators in their cultures. Shamans claim to communicate with the spirits on behalf of

12827-431: The shape of a female head was discovered near the huts. The left side of the figure’s face was distorted. One of the burials, located near the huts, revealed a human female skeleton aged to 40+ years old, ritualistically placed beneath a pair of mammoth scapulae, one leaning against the other. Surprisingly, the left side of the skull was disfigured in the same manner as the aforementioned carved ivory figure, indicating that

12954-401: The site in 1986, a well-preserved triple burial was unearthed. The site is dated to be 28 kya. The remains of three male individuals were found. It was initially believed that the middle of the three bodies was a female, but recent DNA evidence has proved the body was a male. The bodies were lying in an extended lengthwise position, covered by burnt spruce logs and branches. The body in the middle

13081-549: The site, located in a cave in lower Galilee and belonging to the Natufian culture , but is said to be unlike any other among the Epipaleolithic Natufians or in the Paleolithic period. A debated etymology of the word "shaman" is "one who knows", implying, among other things, that the shaman is an expert in keeping together the multiple codes of the society, and that to be effective, shamans must maintain

13208-544: The social hierarchy of the people at the site, as well as indicating an increased lifespan for these inhabitants. The remains were covered in red ochre, a compound known to have religious significance, indicating that this woman’s burial was ceremonial in nature. Also, the inclusion of a mammoth scapula and a fox are indicative of a high-status burial. In the Upper Paleolithic, anatomically modern humans began living longer, often reaching middle age, by today’s standards. Rachel Caspari argues that life expectancy increased during

13335-634: The subject have been produced, with a peer-reviewed academic journal being devoted to the study of shamanism. The Modern English word shamanism derives from the Russian word шаман , šamán , which itself comes from the word samān from a Tungusic language – possibly from the southwestern dialect of the Evenki spoken by the Sym Evenki peoples, or from the Manchu language . The etymology of

13462-427: The term "shamanism" is appropriate. He notes that for many readers, "-ism" implies a particular dogma, like Buddhism, Catholicism or Judaism. He recommends using the term "shamanhood" or "shamanship" (a term used in old Russian and German ethnographic reports at the beginning of the 20th century) for stressing the diversity and the specific features of the discussed cultures. He believes that this places more stress on

13589-456: The term in a very broad sense. The term was used to describe unrelated magicoreligious practices found within the ethnic religions of other parts of Asia, Africa, Australasia and even completely unrelated parts of the Americas, as they believed these practices to be similar to one another. While the term has been incorrectly applied by cultural outsiders to many Indigenous spiritual practices,

13716-477: The term which appeared to be in use: According to the Oxford English Dictionary , a shaman ( / ˈ ʃ ɑː m ə n / SHAH -mən , / ˈ ʃ æ m ə n / SHAM -ən or / ˈ ʃ eɪ m ə n / SHAY -mən ) is someone who is regarded as having access to, and influence in, the world of benevolent and malevolent spirits , who typically enters into a trance state during

13843-453: The theoretical failure predictions with real-life failures. Ceramic materials are usually ionic or covalent bonded materials. A material held together by either type of bond will tend to fracture before any plastic deformation takes place, which results in poor toughness in these materials. Additionally, because these materials tend to be porous, the pores and other microscopic imperfections act as stress concentrators , decreasing

13970-460: The toughness further, and reducing the tensile strength . These combine to give catastrophic failures , as opposed to the more ductile failure modes of metals. These materials do show plastic deformation . However, because of the rigid structure of crystalline material, there are very few available slip systems for dislocations to move, and so they deform very slowly. To overcome the brittle behavior, ceramic material development has introduced

14097-459: The use of entheogens or ritual performances. The methods employed are diverse, and are often used together. Just like shamanism itself, music and songs related to it in various cultures are diverse. In several instances, songs related to shamanism are intended to imitate natural sounds , via onomatopoeia . Sound mimesis in various cultures may serve other functions not necessarily related to shamanism: practical goals such as luring game in

14224-565: The use of glassy, amorphous ceramic coatings on top of the crystalline ceramic substrates. Ceramics now include domestic, industrial, and building products, as well as a wide range of materials developed for use in advanced ceramic engineering, such as semiconductors . The word ceramic comes from the Ancient Greek word κεραμικός ( keramikós ), meaning "of or for pottery " (from κέραμος ( kéramos )  'potter's clay, tile, pottery'). The earliest known mention of

14351-419: The used symbols and meanings and therefore trust the shamanic worker. There are also semiotic , theoretical approaches to shamanism, and examples of "mutually opposing symbols" in academic studies of Siberian lore, distinguishing a "white" shaman who contacts sky spirits for good aims by day, from a "black" shaman who contacts evil spirits for bad aims by night. (Series of such opposing symbols referred to

14478-487: The various Tungus dialects as a corruption of this term, and then been told to Christian missionaries , explorers, soldiers and colonial administrators with whom the people had increasing contact for centuries. A female shaman is sometimes called a shamanka , which is not an actual Tungus term but simply shaman plus the Russian suffix -ka (for feminine nouns). There is no single agreed-upon definition for

14605-527: The ways that modern science (systems theory, ecology, new approaches in anthropology and archeology) treats causality in a less linear fashion. He also suggests a cooperation of modern science and Indigenous lore. Shamanic practices may originate as early as the Paleolithic , predating all organized religions, and certainly as early as the Neolithic period. The earliest known undisputed burial of

14732-446: The wear plates of crushing equipment in mining operations. Advanced ceramics are also used in the medical, electrical, electronics, and armor industries. Human beings appear to have been making their own ceramics for at least 26,000 years, subjecting clay and silica to intense heat to fuse and form ceramic materials. The earliest found so far were in southern central Europe and were sculpted figures, not dishes. The earliest known pottery

14859-405: The word "shamanism" among anthropologists. Thomas Downson suggests three shared elements of shamanism: practitioners consistently alter consciousness, the community regards altering consciousness as an important ritual practice, and the knowledge about the practice is controlled. The English historian Ronald Hutton noted that by the dawn of the 21st century, there were four separate definitions of

14986-424: The word is sometimes connected to the Tungus root sā- , meaning "to know". However, Finnish ethnolinguist Juha Janhunen questions this connection on linguistic grounds: "The possibility cannot be completely rejected, but neither should it be accepted without reservation since the assumed derivational relationship is phonologically irregular (note especially the vowel quantities)." Mircea Eliade noted that

15113-462: The words “shaman” and “shamanism” do not accurately describe the variety and complexity that is Indigenous spirituality. Each nation and tribe has its own way of life, and uses terms in their own languages. Mircea Eliade writes, "A first definition of this complex phenomenon, and perhaps the least hazardous, will be: shamanism = 'technique of religious ecstasy '." Shamanism encompasses the premise that shamans are intermediaries or messengers between

15240-425: Was found in 2024. If a ceramic is subjected to substantial mechanical loading, it can undergo a process called ice-templating , which allows some control of the microstructure of the ceramic product and therefore some control of the mechanical properties. Ceramic engineers use this technique to tune the mechanical properties to their desired application. Specifically, the strength is increased when this technique

15367-553: Was found to have deformities on the left side of her face. The special importance accorded with her burial, in addition to her facial deformity, makes it possible that she was a shaman in this time period, where it was “not uncommon that people with disabilities, either mental or physical, are thought to have unusual supernatural powers” (Pringle 2010). In 1981, Patricia Rice studied a multitude of female clay figurines found at Dolní Věstonice, believed to represent fertility in this society. She challenged this assumption by analyzing all

15494-486: Was introduced to the west after Russian forces conquered the shamanistic Khanate of Kazan in 1552. The term "shamanism" was first applied by Western anthropologists as outside observers of the ancient religion of the Turks and Mongols , as well as those of the neighbouring Tungusic- and Samoyedic -speaking peoples. Upon observing more religious traditions around the world, some Western anthropologists began to also use

15621-503: Was made by mixing animal products with clay and firing it at up to 800 °C (1,500 °F). While pottery fragments have been found up to 19,000 years old, it was not until about 10,000 years later that regular pottery became common. An early people that spread across much of Europe is named after its use of pottery: the Corded Ware culture . These early Indo-European peoples decorated their pottery by wrapping it with rope while it

15748-413: Was placed first, being partially covered by the other two. The other two were in different positions. One was faced down and the other on his side with hands reaching the pubic region of the middle body. The heads of all three were covered with red ochre, the central body also having red ochre around his pubis. All three individuals are theorized to be related based on three rare traits: unilateral absence of

15875-528: Was still wet. When the ceramics were fired, the rope burned off but left a decorative pattern of complex grooves on the surface. The invention of the wheel eventually led to the production of smoother, more even pottery using the wheel-forming (throwing) technique, like the pottery wheel . Early ceramics were porous, absorbing water easily. It became useful for more items with the discovery of glazing techniques, which involved coating pottery with silicon, bone ash, or other materials that could melt and reform into

16002-468: Was telling the truth". Belief in witchcraft and sorcery, known as brujería in Latin America, exists in many societies. Other societies assert all shamans have the power to both cure and kill. Those with shamanic knowledge usually enjoy great power and prestige in the community, but they may also be regarded suspiciously or fearfully as potentially harmful to others. By engaging in their work,

16129-588: Was vital for female shamans, especially those living during the Chosun Dynasty in Korea (A.D. 1392–1910). In a culture that disapproved of female economic autonomy, the practice of shamanism allowed women to advance themselves financially and independently, in a way that had not been possible for them before. There are two major frameworks among cognitive and evolutionary scientists for explaining shamanism. The first, proposed by anthropologist Michael Winkelman,

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