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74-1123: The name Bullough may refer to: Edward Bullough (1880–1934), English aesthetician and scholar of modern languages Edward Bullough (1866–1934), English rugby union footballer Hank Bullough (1934–2019), American football coach James Bullough (1800–1868), English inventor of the 1842 Lancashire Loom Denis Bullough (born 1895), British football player James Bullough Lansing (1902–1949), American engineer Robin Bullough (1929–2008), British mathematical physicist Sir George Bullough, 1st Baronet (1870–1939), English businessman, soldier, and Thoroughbred racehorse owner and breeder Vern Bullough (1928–2006), American historian and sexologist Donald A. Bullough (1928–2002) British medieval historian Riley Bullough (born 1993), American football player, Michigan State University See also [ edit ] Bullough-Dodd Bullough's Pond Reflections in Bullough's Pond [REDACTED] Name list This page or section lists people that share

148-637: A color space , which when being abstracted as a mathematical color model can assign each region of color with a corresponding set of numbers. As such, color spaces are an essential tool for color reproduction in print , photography , computer monitors, and television . The most well-known color models are RGB , CMYK , YUV , HSL, and HSV . Because the perception of color is an important aspect of human life, different colors have been associated with emotions , activity, and nationality . Names of color regions in different cultures can have different, sometimes overlapping areas. In visual arts , color theory

222-412: A complementary color . Afterimage effects have also been used by artists, including Vincent van Gogh . When an artist uses a limited color palette , the human visual system tends to compensate by seeing any gray or neutral color as the color which is missing from the color wheel. For example, in a limited palette consisting of red, yellow, black, and white, a mixture of yellow and black will appear as

296-410: A negative , inhibitory aspect—the cutting-out of the practical sides of things and of our practical attitude to them—and a positive side—the elaboration of the experience on the new basis created by the inhibitory action of Distance. The relation between self and object remains a personal one (it is not like the impersonal relation in scientific observation, for example) and Bullough thinks that

370-459: A "concordance" between them is necessary for aesthetic appreciation. However this must not be such that psychical distance is lost: Bullough imagines a jealous husband watching a performance of Othello , who "will probably do anything but appreciate the play". This " antinomy of Distance" leads Bullough to say that what is desirable in art, "both in appreciation and production", is "the utmost decrease of Distance without its disappearance". In

444-491: A black object. The subtractive model also predicts the color resulting from a mixture of paints, or similar medium such as fabric dye, whether applied in layers or mixed together prior to application. In the case of paint mixed before application, incident light interacts with many different pigment particles at various depths inside the paint layer before emerging. Structural colors are colors caused by interference effects rather than by pigments. Color effects are produced when

518-477: A continuous spectrum. The human eye cannot tell the difference between such light spectra just by looking into the light source, although the color rendering index of each light source may affect the color of objects illuminated by these metameric light sources. Similarly, most human color perceptions can be generated by a mixture of three colors called primaries . This is used to reproduce color scenes in photography, printing, television, and other media. There are

592-419: A given type become desensitized. For a few seconds after the light ceases, they will continue to signal less strongly than they otherwise would. Colors observed during that period will appear to lack the color component detected by the desensitized photoreceptors. This effect is responsible for the phenomenon of afterimages , in which the eye may continue to see a bright figure after looking away from it, but in

666-451: A material is scored with fine parallel lines, formed of one or more parallel thin layers, or otherwise composed of microstructures on the scale of the color's wavelength . If the microstructures are spaced randomly, light of shorter wavelengths will be scattered preferentially to produce Tyndall effect colors: the blue of the sky (Rayleigh scattering, caused by structures much smaller than the wavelength of light, in this case, air molecules),

740-476: A nearly straight edge. For example, mixing green light (530 nm) and blue light (460 nm) produces cyan light that is slightly desaturated, because response of the red color receptor would be greater to the green and blue light in the mixture than it would be to a pure cyan light at 485 nm that has the same intensity as the mixture of blue and green. Because of this, and because the primaries in color printing systems generally are not pure themselves,

814-490: A normal human would view as metamers . Some invertebrates, such as the mantis shrimp , have an even higher number of cones (12) that could lead to a richer color gamut than even imaginable by humans. The existence of human tetrachromats is a contentious notion. As many as half of all human females have 4 distinct cone classes , which could enable tetrachromacy. However, a distinction must be made between retinal (or weak ) tetrachromats , which express four cone classes in

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888-471: A number of methods or color spaces for specifying a color in terms of three particular primary colors . Each method has its advantages and disadvantages depending on the particular application. No mixture of colors, however, can produce a response truly identical to that of a spectral color, although one can get close, especially for the longer wavelengths, where the CIE 1931 color space chromaticity diagram has

962-401: A perception of color. Behavioral and functional neuroimaging experiments have demonstrated that these color experiences lead to changes in behavioral tasks and lead to increased activation of brain regions involved in color perception, thus demonstrating their reality, and similarity to real color percepts, albeit evoked through a non-standard route. Synesthesia can occur genetically, with 4% of

1036-595: A review of experimental work (1921). In 1920, he was appointed College Lecturer in modern languages and University Lecturer in German, and he edited the anthology Cambridge Readings in Italian Literature . In 1923 Bullough resigned his university post, wishing to concentrate instead on Italian. The same year, he joined the Roman Catholic Church as a Dominican Tertiary , and afterwards

1110-424: A single wavelength only, the pure spectral or monochromatic colors . The spectrum above shows approximate wavelengths (in nm ) for spectral colors in the visible range. Spectral colors have 100% purity , and are fully saturated . A complex mixture of spectral colors can be used to describe any color, which is the definition of a light power spectrum . The spectral colors form a continuous spectrum, and how it

1184-549: A spectral color has the maximal saturation. In Helmholtz coordinates , this is described as 100% purity . The physical color of an object depends on how it absorbs and scatters light. Most objects scatter light to some degree and do not reflect or transmit light specularly like glasses or mirrors . A transparent object allows almost all light to transmit or pass through, thus transparent objects are perceived as colorless. Conversely, an opaque object does not allow light to transmit through and instead absorbs or reflects

1258-431: A spectral color, relative to the context in which it is viewed, may alter its perception considerably. For example, a low-intensity orange-yellow is brown , and a low-intensity yellow-green is olive green . Additionally, hue shifts towards yellow or blue happen if the intensity of a spectral light is increased; this is called Bezold–Brücke shift . In color models capable of representing spectral colors, such as CIELUV ,

1332-407: A surface displays comes from the parts of the visible spectrum that are not absorbed and therefore remain visible. Without pigments or dye, fabric fibers, paint base and paper are usually made of particles that scatter white light (all colors) well in all directions. When a pigment or ink is added, wavelengths are absorbed or "subtracted" from white light, so light of another color reaches the eye. If

1406-575: A tentative fourth: a successor to the chair, Uberto Limentani, believed there was "no doubt" that Bullough sympathised with fascism. After a short illness resulting from an internal operation, Bullough died in a nursing home in Bath on 17 September 1934. He was buried at Woodchester Priory in Stroud . The philosopher Michael Oakeshott , a colleague at Caius, wrote Bullough's obituary for their college record. The family home on Buckingham Road, Cambridge

1480-399: A variety of green, a mixture of red and black will appear as a variety of purple, and pure gray will appear bluish. The trichromatic theory is strictly true when the visual system is in a fixed state of adaptation. In reality, the visual system is constantly adapting to changes in the environment and compares the various colors in a scene to reduce the effects of the illumination. If a scene

1554-648: Is congenital red–green color blindness , affecting ~8% of males. Individuals with the strongest form of this condition ( dichromacy ) will experience blue and purple, green and yellow, teal, and gray as colors of confusion, i.e. metamers. Outside of humans, which are mostly trichromatic (having three types of cones), most mammals are dichromatic, possessing only two cones. However, outside of mammals, most vertebrates are tetrachromatic , having four types of cones. This includes most birds , reptiles , amphibians , and bony fish . An extra dimension of color vision means these vertebrates can see two distinct colors that

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1628-412: Is an optimal color. With the current state of technology, we are unable to produce any material or pigment with these properties. Thus, four types of "optimal color" spectra are possible: In the first, the transition goes from 0 at both ends of the spectrum to 1 in the middle, as shown in the image at right. In the second, it goes from 1 at the ends to 0 in the middle. In the third type, it starts at 1 at

1702-538: Is bright enough to strongly stimulate the cones, rods play virtually no role in vision at all. On the other hand, in dim light, the cones are understimulated leaving only the signal from the rods, resulting in a colorless response (furthermore, the rods are barely sensitive to light in the "red" range). In certain conditions of intermediate illumination, the rod response and a weak cone response can together result in color discriminations not accounted for by cone responses alone. These effects, combined, are summarized also in

1776-412: Is characterized by its wavelength (or frequency ) and its intensity . When the wavelength is within the visible spectrum (the range of wavelengths humans can perceive, approximately from 390  nm to 700 nm), it is known as "visible light ". Most light sources emit light at many different wavelengths; a source's spectrum is a distribution giving its intensity at each wavelength. Although

1850-666: Is different from Wikidata All set index articles Edward Bullough Edward Bullough was born in Thun , Switzerland , on 28 March 1880, to John Bullough and Bertha Schmidlin. As a child he lived mostly in Germany, and was educated at Vitzthum Gymnasium, Dresden . At seventeen Bullough moved to England, and in 1899 matriculated at Trinity College, Cambridge , where he studied Medieval and Modern Languages. He graduated BA (Class I) in 1902, MA in 1906, after which he taught French and German at Cambridge colleges and lectured in

1924-481: Is divided into distinct colors linguistically is a matter of culture and historical contingency. Despite the ubiquitous ROYGBIV mnemonic used to remember the spectral colors in English, the inclusion or exclusion of colors is contentious, with disagreement often focused on indigo and cyan. Even if the subset of color terms is agreed, their wavelength ranges and borders between them may not be. The intensity of

1998-463: Is illuminated with one light, and then with another, as long as the difference between the light sources stays within a reasonable range, the colors in the scene appear relatively constant to us. This was studied by Edwin H. Land in the 1970s and led to his retinex theory of color constancy . Both phenomena are readily explained and mathematically modeled with modern theories of chromatic adaptation and color appearance (e.g. CIECAM02 , iCAM). There

2072-609: Is no need to dismiss the trichromatic theory of vision, but rather it can be enhanced with an understanding of how the visual system adapts to changes in the viewing environment. Color reproduction is the science of creating colors for the human eye that faithfully represent the desired color. It focuses on how to construct a spectrum of wavelengths that will best evoke a certain color in an observer. Most colors are not spectral colors , meaning they are mixtures of various wavelengths of light. However, these non-spectral colors are often described by their dominant wavelength , which identifies

2146-553: Is related to an object's light absorption , reflection , emission spectra , and interference . For most humans, colors are perceived in the visible light spectrum with three types of cone cells ( trichromacy ). Other animals may have a different number of cone cell types or have eyes sensitive to different wavelengths, such as bees that can distinguish ultraviolet , and thus have a different color sensitivity range. Animal perception of color originates from different light wavelength or spectral sensitivity in cone cell types, which

2220-428: Is then processed by the brain . Colors have perceived properties such as hue , colorfulness (saturation), and luminance . Colors can also be additively mixed (commonly used for actual light) or subtractively mixed (commonly used for materials). If the colors are mixed in the right proportions, because of metamerism , they may look the same as a single-wavelength light. For convenience, colors can be organized in

2294-413: Is used to govern the use of colors in an aesthetically pleasing and harmonious way. The theory of color includes the color complements ; color balance ; and classification of primary colors (traditionally red , yellow , blue ), secondary colors (traditionally orange , green , purple ), and tertiary colors . The study of colors in general is called color science . Electromagnetic radiation

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2368-880: The First World War , Bullough was recruited as a civilian in the summer of 1915 to the Admiralty 's cryptoanalysis section, Room 40 . He served for four years, finally as a Lieutenant of the Royal Naval Volunteer Reserve . After the war he returned to Caius, where he had been re-elected to a fellowship in January 1915. He published in the British Journal of Psychology two more papers on aesthetic theory, "The Relation of Aesthetics to Psychology" (1919) and "Mind and Medium in Art" (1920), and

2442-462: The Kruithof curve , which describes the change of color perception and pleasingness of light as a function of temperature and intensity. While the mechanisms of color vision at the level of the retina are well-described in terms of tristimulus values, color processing after that point is organized differently. A dominant theory of color vision proposes that color information is transmitted out of

2516-430: The color wheel : it is the collection of colors for which at least one of the two color channels measures a value at one of its extremes. The exact nature of color perception beyond the processing already described, and indeed the status of color as a feature of the perceived world or rather as a feature of our perception of the world—a type of qualia —is a matter of complex and continuing philosophical dispute. From

2590-458: The long-wavelength cones , L cones , or red cones , are most sensitive to light that is perceived as greenish yellow, with wavelengths around 570 nm. Light, no matter how complex its composition of wavelengths, is reduced to three color components by the eye. Each cone type adheres to the principle of univariance , which is that each cone's output is determined by the amount of light that falls on it over all wavelengths. For each location in

2664-411: The opponent process theory of color, noting that color blindness and afterimages typically come in opponent pairs (red-green, blue-orange, yellow-violet, and black-white). Ultimately these two theories were synthesized in 1957 by Hurvich and Jameson, who showed that retinal processing corresponds to the trichromatic theory, while processing at the level of the lateral geniculate nucleus corresponds to

2738-630: The European classical tradition is also, for the Italian, the native tradition, "the 'national' inheritance of Italy lies at the same time embedded in the foundations of Europe". In illustration, Bullough proposes Roman law , the Renaissance , and the Romantic movement as "three contributions made by Italy to the patrimony of the civilised world". He offers the contemporary fascist movement as

2812-532: The V1 blobs, color information is sent to cells in the second visual area, V2. The cells in V2 that are most strongly color tuned are clustered in the "thin stripes" that, like the blobs in V1, stain for the enzyme cytochrome oxidase (separating the thin stripes are interstripes and thick stripes, which seem to be concerned with other visual information like motion and high-resolution form). Neurons in V2 then synapse onto cells in

2886-417: The achromatic colors ( black , gray , and white ) and colors such as pink , tan , and magenta . Two different light spectra that have the same effect on the three color receptors in the human eye will be perceived as the same color. They are metamers of that color. This is exemplified by the white light emitted by fluorescent lamps, which typically has a spectrum of a few narrow bands, while daylight has

2960-514: The colors on the straight line in the CIE xy chromaticity diagram (the " line of purples "), leading to magenta or purple -like colors. The third type produces the colors located in the "warm" sharp edge of the optimal color solid (this will be explained later in the article). The fourth type produces the colors located in the "cold" sharp edge of the optimal color solid. The optimal color solid , Rösch – MacAdam color solid, or simply visible gamut ,

3034-409: The colors reproduced are never perfectly saturated spectral colors, and so spectral colors cannot be matched exactly. However, natural scenes rarely contain fully saturated colors, thus such scenes can usually be approximated well by these systems. The range of colors that can be reproduced with a given color reproduction system is called the gamut . The CIE chromaticity diagram can be used to describe

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3108-626: The extended V4 occurs in millimeter-sized color modules called globs . This is the part of the brain in which color is first processed into the full range of hues found in color space . A color vision deficiency causes an individual to perceive a smaller gamut of colors than the standard observer with normal color vision. The effect can be mild, having lower "color resolution" (i.e. anomalous trichromacy ), moderate, lacking an entire dimension or channel of color (e.g. dichromacy ), or complete, lacking all color perception (i.e. monochromacy ). Most forms of color blindness derive from one or more of

3182-480: The extended V4. This area includes not only V4, but two other areas in the posterior inferior temporal cortex, anterior to area V3, the dorsal posterior inferior temporal cortex, and posterior TEO. Area V4 was initially suggested by Semir Zeki to be exclusively dedicated to color, and he later showed that V4 can be subdivided into subregions with very high concentrations of color cells separated from each other by zones with lower concentration of such cells though even

3256-417: The eye by three opponent processes , or opponent channels, each constructed from the raw output of the cones: a red–green channel, a blue–yellow channel, and a black–white "luminance" channel. This theory has been supported by neurobiology, and accounts for the structure of our subjective color experience. Specifically, it explains why humans cannot perceive a "reddish green" or "yellowish blue", and it predicts

3330-420: The gamut that can be reproduced. Additive color is light created by mixing together light of two or more different colors. Red , green , and blue are the additive primary colors normally used in additive color systems such as projectors, televisions, and computer terminals. Subtractive coloring uses dyes, inks, pigments, or filters to absorb some wavelengths of light and not others. The color that

3404-466: The gamut. Another problem with color reproduction systems is connected with the initial measurement of color, or colorimetry . The characteristics of the color sensors in measurement devices (e.g. cameras, scanners) are often very far from the characteristics of the receptors in the human eye. A color reproduction system "tuned" to a human with normal color vision may give very inaccurate results for other observers, according to color vision deviations to

3478-462: The latter cells respond better to some wavelengths than to others, a finding confirmed by subsequent studies. The presence in V4 of orientation-selective cells led to the view that V4 is involved in processing both color and form associated with color but it is worth noting that the orientation selective cells within V4 are more broadly tuned than their counterparts in V1, V2, and V3. Color processing in

3552-503: The layers' thickness. Structural color is studied in the field of thin-film optics . The most ordered or the most changeable structural colors are iridescent . Structural color is responsible for the blues and greens of the feathers of many birds (the blue jay, for example), as well as certain butterfly wings and beetle shells. Variations in the pattern's spacing often give rise to an iridescent effect, as seen in peacock feathers, soap bubbles , films of oil, and mother of pearl , because

3626-400: The light is not a pure white source (the case of nearly all forms of artificial lighting), the resulting spectrum will appear a slightly different color. Red paint, viewed under blue light, may appear black . Red paint is red because it scatters only the red components of the spectrum. If red paint is illuminated by blue light, it will be absorbed by the red paint, creating the appearance of

3700-432: The light it receives. Like transparent objects, translucent objects allow light to transmit through, but translucent objects are seen colored because they scatter or absorb certain wavelengths of light via internal scattering. The absorbed light is often dissipated as heat . Although Aristotle and other ancient scientists had already written on the nature of light and color vision , it was not until Newton that light

3774-462: The luster of opals , and the blue of human irises. If the microstructures are aligned in arrays, for example, the array of pits in a CD, they behave as a diffraction grating : the grating reflects different wavelengths in different directions due to interference phenomena, separating mixed "white" light into light of different wavelengths. If the structure is one or more thin layers then it will reflect some wavelengths and transmit others, depending on

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3848-420: The mid-wavelength (so-called "green") cones; the other cones will inevitably be stimulated to some degree at the same time. The set of all possible tristimulus values determines the human color space . It has been estimated that humans can distinguish roughly 10 million different colors. The other type of light-sensitive cell in the eye, the rod , has a different response curve. In normal situations, when light

3922-437: The most chromatic colors that humans are able to see. The emission or reflectance spectrum of a color is the amount of light of each wavelength that it emits or reflects, in proportion to a given maximum, which has the value of 1 (100%). If the emission or reflectance spectrum of a color is either 0 (0%) or 1 (100%) across the entire visible spectrum, and it has no more than two transitions between 0 and 1, or 1 and 0, then it

3996-614: The opponent theory. In 1931, an international group of experts known as the Commission internationale de l'éclairage ( CIE ) developed a mathematical color model, which mapped out the space of observable colors and assigned a set of three numbers to each. The ability of the human eye to distinguish colors is based upon the varying sensitivity of different cells in the retina to light of different wavelengths . Humans are trichromatic —the retina contains three types of color receptor cells, or cones . One type, relatively distinct from

4070-448: The other two, is most responsive to light that is perceived as blue or blue-violet, with wavelengths around 450  nm ; cones of this type are sometimes called short-wavelength cones or S cones (or misleadingly, blue cones ). The other two types are closely related genetically and chemically: middle-wavelength cones , M cones , or green cones are most sensitive to light perceived as green, with wavelengths around 540 nm, while

4144-547: The perception of colours in the Cambridge Psychological Laboratory, the basis for a series of three papers in the British Journal of Psychology . Bullough also had an interest in parapsychology , and was a member of the Society for Psychical Research . In 1908 Bullough married Enrichetta Angelica Marchetti (daughter of the actor Eleonora Duse ), with whom he had a son and a daughter. He

4218-488: The population having variants associated with the condition. Synesthesia has also been known to occur with brain damage, drugs, and sensory deprivation. The philosopher Pythagoras experienced synesthesia and provided one of the first written accounts of the condition in approximately 550 BCE. He created mathematical equations for musical notes that could form part of a scale, such as an octave. After exposure to strong light in their sensitivity range, photoreceptors of

4292-545: The red end of the spectrum, and it changes to 0 at a given wavelength. In the fourth type, it starts at 0 in the red end of the spectrum, and it changes to 1 at a given wavelength. The first type produces colors that are similar to the spectral colors and follow roughly the horseshoe-shaped portion of the CIE xy chromaticity diagram (the spectral locus ), but are generally more chromatic , although less spectrally pure. The second type produces colors that are similar to (but generally more chromatic and less spectrally pure than)

4366-409: The reflected color depends upon the viewing angle. Numerous scientists have carried out research in butterfly wings and beetle shells, including Isaac Newton and Robert Hooke. Since 1942, electron micrography has been used, advancing the development of products that exploit structural color, such as " photonic " cosmetics. The gamut of the human color vision is bounded by optimal colors. They are

4440-535: The retina, and functional (or strong ) tetrachromats , which are able to make the enhanced color discriminations expected of tetrachromats. In fact, there is only one peer-reviewed report of a functional tetrachromat. It is estimated that while the average person is able to see one million colors, someone with functional tetrachromacy could see a hundred million colors. In certain forms of synesthesia , perceiving letters and numbers ( grapheme–color synesthesia ) or hearing sounds ( chromesthesia ) will evoke

4514-636: The same given name . If an internal link led you here, you may wish to change that link to point directly to the intended article. [REDACTED] Surname list This page lists people with the surname Bullough . If an internal link intending to refer to a specific person led you to this page, you may wish to change that link by adding the person's given name (s) to the link. Retrieved from " https://en.wikipedia.org/w/index.php?title=Bullough&oldid=1212047590 " Categories : Given names Surnames Hidden categories: Articles with short description Short description

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4588-482: The same species. In each such class, the members are called metamers of the color in question. This effect can be visualized by comparing the light sources' spectral power distributions and the resulting colors. The familiar colors of the rainbow in the spectrum —named using the Latin word for appearance or apparition by Isaac Newton in 1671—include all those colors that can be produced by visible light of

4662-404: The single wavelength of light that produces a sensation most similar to the non-spectral color. Dominant wavelength is roughly akin to hue . There are many color perceptions that by definition cannot be pure spectral colors due to desaturation or because they are purples (mixtures of red and violet light, from opposite ends of the spectrum). Some examples of necessarily non-spectral colors are

4736-410: The spectrum of light arriving at the eye from a given direction determines the color sensation in that direction, there are many more possible spectral combinations than color sensations. In fact, one may formally define a color as a class of spectra that give rise to the same color sensation, although such classes would vary widely among different species, and to a lesser extent among individuals within

4810-455: The standard observer. The different color response of different devices can be problematic if not properly managed. For color information stored and transferred in digital form, color management techniques, such as those based on ICC profiles , can help to avoid distortions of the reproduced colors. Color management does not circumvent the gamut limitations of particular output devices, but can assist in finding good mapping of input colors into

4884-437: The three classes of cone cells either being missing, having a shifted spectral sensitivity or having lower responsiveness to incoming light. In addition, cerebral achromatopsia is caused by neural anomalies in those parts of the brain where visual processing takes place. Some colors that appear distinct to an individual with normal color vision will appear metameric to the color blind. The most common form of color blindness

4958-437: The university. At this time Bullough became interested in aesthetics , and "prepared himself to deal with [its] problems … by a study of physiology and general psychology ". In 1907 Bullough gave a course of lectures in aesthetics, the first such at Cambridge, privately printed as The Modern Conception of Aesthetics . He repeated the course annually "until shortly before his death". Bullough conducted experimental work on

5032-415: The visual field, the three types of cones yield three signals based on the extent to which each is stimulated. These amounts of stimulation are sometimes called tristimulus values . The response curve as a function of wavelength varies for each type of cone. Because the curves overlap, some tristimulus values do not occur for any incoming light combination. For example, it is not possible to stimulate only

5106-575: Was active in the Cambridge University Catholic Association. In the following decade he published translations of Étienne Gilson , Karl Adam , and Achille Ratti (by then Pope Pius XI), and gave three papers on Dante at Catholic summer schools in Cambridge and Salzburg . A colleague believed that his work in Italian studies "all went into his lectures and teaching", rather than research for publication. He

5180-521: Was appointed University Lecturer in Italian in 1926. Bullough was elected to the Chair of Italian at Cambridge in March 1933. In his printed inaugural lecture, titled Italian Perspectives , he claims that the Italian "perspective" is one of "continuity of classical with medieval and modern times", so that tradition is treated "with the easy familiarity of a family possession". He argues that because

5254-530: Was elected to a Drosier Fellowship at Gonville and Caius College in 1912, and in the same year published his noted theoretical paper, " 'Psychical Distance' as a Factor in Art and an Aesthetic Principle". Psychical distance (Bullough capitalises the words) is that which, in certain situations, "appears to lie between our own self and its affections, using the latter term in its broadest sense as anything which affects our being". Artistic production and appreciation are two such situations. [Psychical Distance] has

5328-417: Was identified as the source of the color sensation. In 1810, Goethe published his comprehensive Theory of Colors in which he provided a rational description of color experience, which 'tells us how it originates, not what it is'. (Schopenhauer) In 1801 Thomas Young proposed his trichromatic theory , based on the observation that any color could be matched with a combination of three lights. This theory

5402-425: Was later refined by James Clerk Maxwell and Hermann von Helmholtz . As Helmholtz puts it, "the principles of Newton's law of mixture were experimentally confirmed by Maxwell in 1856. Young's theory of color sensations, like so much else that this marvelous investigator achieved in advance of his time, remained unnoticed until Maxwell directed attention to it." At the same time as Helmholtz, Ewald Hering developed

5476-502: Was offered to the Dominican Order by his widow and is now Cambridge Blackfriars . Note that Bullough's texts and translations of other authors are collected after the chronological presentation. Color Color ( American English ) or colour ( British and Commonwealth English ) is the visual perception based on the electromagnetic spectrum . Though color is not an inherent property of matter , color perception

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