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124-530: Ovalhouse , formerly called Oval House Theatre , was an Off-West End theatre in the London Borough of Lambeth , located at 52–54 Kennington Oval, London, SE11 5SW. It closed in 2020, and moved to Brixton , becoming the Brixton House theatre (located at 385 Coldharbour Lane, SW9 8GL). The roots of Ovalhouse can be traced back to the 1930s and its foundations, as Christ Church (Oxford) Clubs, by

248-410: A collective form of reception. The structure of dramatic texts , unlike other forms of literature , is directly influenced by this collaborative production and collective reception. The early modern tragedy Hamlet (1601) by Shakespeare and the classical Athenian tragedy Oedipus Rex ( c.  429 BCE ) by Sophocles are among the masterpieces of the art of drama. A modern example

372-544: A fiber wick . Lamps typically used animal or vegetable fats as fuel. Hundreds of these lamps (hollow worked stones) have been found in the Lascaux caves in modern-day France , dating to about 15,000 years ago. Oily animals (birds and fish) were also used as lamps after being threaded with a wick. Fireflies have been used as lighting sources. Candles and glass and pottery lamps were also invented. Chandeliers were an early form of " light fixture ". A major reduction in

496-409: A 60 W incandescent light bulb produces about the same amount of light as a 13 W compact fluorescent lamp . Each of these technologies has a different efficacy in converting electrical energy to visible light . Visible light output is typically measured in lumens . This unit only quantifies the visible radiation, and excludes invisible infrared and ultraviolet light. A wax candle produces on

620-494: A Dosimeter. Dosimeters measure an individual's or an object's exposure to something in the environment, such as light dosimeters and ultraviolet dosimeters. In order to specifically measure the amount of light entering the eye, personal circadian light meter called the Daysimeter has been developed. This is the first device created to accurately measure and characterize light (intensity, spectrum, timing, and duration) entering

744-489: A Participation and Youth Arts department working with young people and vulnerable adults. Its 33% London programme offered an alternative route into professional theatre for aspiring artists aged 18–25. In 2020 Ovalhouse closed, in anticipation of its move to purpose-built premises in Brixton, which subsequently opened as Brixton House in 2022. As a result of the move to Brixton, the existing premises were sold, along with

868-420: A building: Specification of illumination requirements is the basic concept of deciding how much illumination is required for a given task. Clearly, much less light is required to illuminate a hallway compared to that needed for a word processing work station. Generally speaking, the energy expended is proportional to the design illumination level. For example, a lighting level of 400 lux might be chosen for

992-596: A clear view of the area being scanned. Ultrasonic sensors transmit sound above the range of human hearing and monitor the time it takes for the sound waves to return. A break in the pattern caused by any motion in the area triggers the control. Ultrasonic sensors can see around obstructions and are best for areas with cabinets and shelving, restrooms, and open areas requiring 360-degree coverage. Some occupancy sensors utilize both passive infrared and ultrasonic technology, but are usually more expensive. They can be used to control one lamp, one fixture or many fixtures. Daylighting

1116-406: A dancing floor (orchestra), dressing room and scene-building area (skene). Since the words were the most important part, good acoustics and clear delivery were paramount. The actors (always men) wore masks appropriate to the characters they represented, and each might play several parts. Athenian tragedy—the oldest surviving form of tragedy—is a type of dance -drama that formed an important part of

1240-830: A dark nightclub it could be considered general lighting. In a movie theater , steps in the aisles are usually marked with a row of small lights for convenience and safety, when the film has started and the other lights are off. Traditionally made up of small low wattage, low-voltage lamps in a track or translucent tube, these are rapidly being replaced with LED based versions. Street Lights are used to light roadways and walkways at night. Some manufacturers are designing LED and photovoltaic luminaires to provide an energy-efficient alternative to traditional street light fixtures. Floodlights can be used to illuminate work zones or outdoor playing fields during nighttime hours. The most common type of floodlights are metal halide and high pressure sodium lights. Beacon lights are positioned at

1364-442: A live theatre, dance, or musical performance, and is selected and arranged to create dramatic effects. Stage lighting uses general illumination technology in devices configured for easy adjustment of their output characteristics. The setup of stage lighting is tailored for each scene of each production. Dimmers, colored filters, reflectors, lenses, motorized or manually aimed lamps, and different kinds of flood and spot lights are among

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1488-533: A particular type. Kālidāsa in the 1st century BCE, is arguably considered to be ancient India 's greatest Sanskrit dramatist. Three famous romantic plays written by Kālidāsa are the Mālavikāgnimitram ( Mālavikā and Agnimitra ), Vikramuurvashiiya ( Pertaining to Vikrama and Urvashi ), and Abhijñānaśākuntala ( The Recognition of Shakuntala ). The last was inspired by a story in the Mahabharata and

1612-500: A play that is neither a comedy nor a tragedy—for example, Zola's Thérèse Raquin (1873) or Chekhov's Ivanov (1887). In Ancient Greece however, the word drama encompassed all theatrical plays, tragic, comic, or anything in between. Drama is often combined with music and dance : the drama in opera is generally sung throughout; musicals generally include both spoken dialogue and songs ; and some forms of drama have incidental music or musical accompaniment underscoring

1736-494: A surface. It is analogous to the radiometric unit watts per square metre, but with the power at each wavelength weighted according to the luminosity function , a standardized model of human visual brightness perception. In English, "lux" is used in both singular and plural. Visual comfort often entails the measurement of subjective evaluations. Several measurement methods have been developed to control glare resulting from indoor lighting design. The Unified Glare Rating (UGR),

1860-532: A table is general lighting, while the desk lamp is considered task lighting. Magnifier lamps are also task lighting. The illuminated ceiling was once popular in the 1960s and 1970s but fell out of favor after the 1980s. This uses diffuser panels hung like a suspended ceiling below fluorescent lights, and is considered general lighting. Other forms include neon, which is not usually intended to illuminate anything else, but to actually be an artwork in itself. This would probably fall under accent lighting, though in

1984-524: A tool for developing dramatic work or skills or as a form for situational comedy. Spolin also became interested in how the process of learning improvisation was applicable to the development of human potential. Spolin's son, Paul Sills popularized improvisational theatre as a theatrical art form when he founded, as its first director, The Second City in Chicago. Having been an important part of human culture for more than 2,500 years, theatre has evolved

2108-421: A vehicle to tell a story qualify as comedies. This may include a modern farce such as Boeing Boeing or a classical play such as As You Like It . Theatre expressing bleak, controversial or taboo subject matter in a deliberately humorous way is referred to as black comedy . Black Comedy can have several genres like slapstick humour, dark and sarcastic comedy. Tragedy, then, is an imitation of an action that

2232-435: A very colourful shadow. The thin rods which controlled their movements were attached to a leather collar at the neck of the puppet. The rods ran parallel to the bodies of the puppet and then turned at a ninety degree angle to connect to the neck. While these rods were visible when the shadow was cast, they laid outside the shadow of the puppet; thus they did not interfere with the appearance of the figure. The rods are attached at

2356-697: A wide range of different theories and practices. Some are related to political or spiritual ideologies, while others are based purely on "artistic" concerns. Some processes focus on a story, some on theatre as event, and some on theatre as catalyst for social change. The classical Greek philosopher Aristotle , in his seminal treatise, Poetics ( c.  335 BCE ) is the earliest-surviving example and its arguments have influenced theories of theatre ever since. In it, he offers an account of what he calls "poetry" (a term which in Greek literally means "making" and in this context includes drama — comedy , tragedy , and

2480-405: A wide variety of styles for various functions. The most important functions are as a holder for the light source, to provide directed light and to avoid visual glare . Some are very plain and functional, while some are pieces of art in themselves. Nearly any material can be used, so long as it can tolerate the excess heat and is in keeping with safety codes. An important property of light fixtures

2604-419: A work environment involving meeting rooms and conferences, whereas a level of 80 lux could be selected for building hallways. If the hallway standard simply emulates the conference room needs, then much more energy will be consumed than is needed. Lighting control systems reduce energy usage and cost by helping to provide light only when and where it is needed. Lighting control systems typically incorporate

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2728-436: Is Long Day's Journey into Night by Eugene O'Neill (1956). Considered as a genre of poetry in general, the dramatic mode has been contrasted with the epic and the lyrical modes ever since Aristotle 's Poetics ( c.  335 BCE ); the earliest work of dramatic theory . The use of "drama" in the narrow sense to designate a specific type of play dates from the 19th century . Drama in this sense refers to

2852-663: Is an ancient form of storytelling that renowned for its elaborate puppet/human and complex musical styles. The earliest evidence is from the late 1st millennium CE, in medieval-era texts and archeological sites. The oldest known record that concerns wayang is from the 9th century. Around 840 AD an Old Javanese (Kawi) inscriptions called Jaha Inscriptions issued by Maharaja Sri Lokapala from Mataram Kingdom in Central Java mentions three sorts of performers: atapukan, aringgit, and abanol. Aringgit means Wayang puppet show, Atapukan means Mask dance show, and abanwal means joke art. Ringgit

2976-411: Is an uplight intended for ambient lighting. It is typically a floor lamp but may be wall-mounted like a sconce. Further interior light fixtures include chandeliers, pendant lights, ceiling fans with lights, close-to-ceiling or flush lights, and various types of lamps The portable or table lamp is probably the most common fixture, found in many homes and offices . The standard lamp and shade that sits on

3100-644: Is described in an 11th-century Javanese poem as a leather shadow figure. Theatre in the medieval Islamic world included puppet theatre (which included hand puppets, shadow plays and marionette productions) and live passion plays known as ta'ziyeh , where actors re-enact episodes from Muslim history . In particular, Shia Islamic plays revolved around the istishhād (martyrdom) of Ali 's sons Hasan ibn Ali and Husayn ibn Ali . Secular plays were known as akhraja , recorded in medieval adab literature, though they were less common than puppetry and ta'ziya theatre. Theatre took on many alternative forms in

3224-447: Is generally concerned with the amount of useful light falling on a surface and the amount of light emerging from a lamp or other source, along with the colors that can be rendered by this light. The human eye responds differently to light from different parts of the visible spectrum, therefore photometric measurements must take the luminosity function into account when measuring the amount of useful light. The basic SI unit of measurement

3348-539: Is known primarily from the substantial papyrus fragments of Menander . Aristotle defined comedy as a representation of laughable people that involves some kind of blunder or ugliness that does not cause pain or disaster. In addition to the categories of comedy and tragedy at the City Dionysia, the festival also included the Satyr Play . Finding its origins in rural, agricultural rituals dedicated to Dionysus,

3472-419: Is serious, complete, and of a certain magnitude: in language embellished with each kind of artistic ornament, the several kinds being found in separate parts of the play; in the form of action, not of narrative; through pity and fear effecting the proper purgation of these emotions. Aristotle's phrase "several kinds being found in separate parts of the play" is a reference to the structural origins of drama. In it

3596-443: Is the candela (cd), which describes the luminous intensity, all other photometric units are derived from the candela. Luminance for instance is a measure of the density of luminous intensity in a given direction. It describes the amount of light that passes through or is emitted from a particular area, and falls within a given solid angle . The SI unit for luminance is candela per square metre (cd/m ). The CGS unit of luminance

3720-401: Is the luminous efficacy or wall-plug efficiency , meaning the amount of usable light emanating from the fixture per used energy, usually measured in lumen per watt . A fixture using replaceable light sources can also have its efficiency quoted as the percentage of light passed from the "bulb" to the surroundings. The more transparent the lighting fixtures are, the higher efficacy. Shading

3844-479: Is the stilb , which is equal to one candela per square centimetre or 10 kcd/m . The amount of useful light emitted from a source or the luminous flux is measured in lumen (lm). The SI unit of illuminance and luminous emittance , being the luminous power per area, is measured in Lux . It is used in photometry as a measure of the intensity, as perceived by the human eye, of light that hits or passes through

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3968-472: Is the most famous. It was the first to be translated into English and German . Śakuntalā (in English translation) influenced Goethe 's Faust (1808–1832). The next great Indian dramatist was Bhavabhuti ( c.  7th century CE ). He is said to have written the following three plays: Malati-Madhava , Mahaviracharita and Uttar Ramacharita . Among these three, the last two cover between them

4092-631: Is the oldest form of drama , though live theatre has now been joined by modern recorded forms. Elements of art, such as painted scenery and stagecraft such as lighting are used to enhance the physicality, presence and immediacy of the experience. Places, normally buildings, where performances regularly take place are also called "theatres" (or "theaters"), as derived from the Ancient Greek θέατρον (théatron, "a place for viewing"), itself from θεάομαι (theáomai, "to see", "to watch", "to observe"). Modern Western theatre comes, in large measure, from

4216-510: Is the oldest method of interior lighting. Daylighting is simply designing a space to use as much natural light as possible. This decreases energy consumption and costs, and requires less heating and cooling from the building. Daylighting has also been proven to have positive effects on patients in hospitals as well as work and school performance. Due to a lack of information that indicate the likely energy savings, daylighting schemes are not yet popular among most buildings. Unlike electric lighting,

4340-783: Is universally acknowledged in the Western critical tradition", Marvin Carlson explains, "almost every detail about his seminal work has aroused divergent opinions." Important theatre practitioners of the 20th century include Konstantin Stanislavski , Vsevolod Meyerhold , Jacques Copeau , Edward Gordon Craig , Bertolt Brecht , Antonin Artaud , Joan Littlewood , Peter Brook , Jerzy Grotowski , Augusto Boal , Eugenio Barba , Dario Fo , Viola Spolin , Keith Johnstone and Robert Wilson (director) . Lighting Indoor lighting

4464-574: Is usually accomplished using light fixtures , and is a key part of interior design . Lighting can also be an intrinsic component of landscape projects . With the discovery of fire , the earliest form of artificial lighting used to illuminate an area were campfires or torches . As early as 400,000 years ago, fire was kindled in the caves of Peking Man . Prehistoric people used primitive oil lamps to illuminate surroundings. These lamps were made from naturally occurring materials such as rocks, shells, horns and stones, were filled with grease , and had

4588-518: Is why actors are commonly called "Children of the Pear Garden". During the dynasty of Empress Ling, shadow puppetry first emerged as a recognized form of theatre in China. There were two distinct forms of shadow puppetry, Pekingese (northern) and Cantonese (southern). The two styles were differentiated by the method of making the puppets and the positioning of the rods on the puppets , as opposed to

4712-468: Is within the area being scanned can control lighting. When motion can no longer be detected, the lights shut off. Passive infrared sensors react to changes in heat, such as the pattern created by a moving person. The control must have an unobstructed view of the building area being scanned. Doors, partitions, stairways, etc. will block motion detection and reduce its effectiveness. The best applications for passive infrared occupancy sensors are open spaces with

4836-565: The 1939 World's Fair ) or rope light , occasionally with neon lighting , and recently with LED strip lighting . It is a form of backlighting. Soffit or close to wall lighting can be general or a decorative wall-wash, sometimes used to bring out texture (like stucco or plaster ) on a wall, though this may also show its defects as well. The effect depends heavily on the exact type of lighting source used. Recessed lighting (often called "pot lights" in Canada , "can lights" or 'high hats" in

4960-546: The 20th century in the realism of Stanislavski and Lee Strasberg , the political theatre of Erwin Piscator and Bertolt Brecht , the so-called Theatre of the Absurd of Samuel Beckett and Eugène Ionesco , American and British musicals, the collective creations of companies of actors and directors such as Joan Littlewood 's Theatre Workshop , experimental and postmodern theatre of Robert Wilson and Robert Lepage ,

5084-508: The City Dionysia as an audience member (or even as a participant in the theatrical productions) in particular—was an important part of citizenship . Civic participation also involved the evaluation of the rhetoric of orators evidenced in performances in the law-court or political assembly , both of which were understood as analogous to the theatre and increasingly came to absorb its dramatic vocabulary. The Greeks also developed

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5208-563: The Persian response to news of their military defeat at the Battle of Salamis in 480 BCE—is the notable exception in the surviving drama. When Aeschylus won first prize for it at the City Dionysia in 472 BCE, he had been writing tragedies for more than 25 years, yet its tragic treatment of recent history is the earliest example of drama to survive. More than 130 years later, the philosopher Aristotle analysed 5th-century Athenian tragedy in

5332-569: The Sundanese and wayang kulit (leather shadow-puppet play) of the Javanese and Balinese —draw much of their repertoire from indigenized versions of the Ramayana and Mahabharata . These tales also provide source material for the wayang wong (human theatre) of Java and Bali , which uses actors. Some wayang golek performances, however, also present Muslim stories, called menak . Wayang

5456-574: The US ) is popular, with fixtures mounted into the ceiling structure so as to appear flush with it. These downlights can use narrow beam spotlights, or wider- angle floodlights , both of which are bulbs having their own reflectors . There are also downlights with internal reflectors designed to accept common 'A' lamps (light bulbs) which are generally less costly than reflector lamps. Downlights can be incandescent, fluorescent, HID (high intensity discharge) or LED . Track lighting , invented by Lightolier ,

5580-559: The high-style , verbally elaborate tragedies of Seneca . Although Rome had a native tradition of performance, the Hellenization of Roman culture in the 3rd century BCE had a profound and energizing effect on Roman theatre and encouraged the development of Latin literature of the highest quality for the stage. The only surviving plays from the Roman Empire are ten dramas attributed to Lucius Annaeus Seneca (4 BCE–65 CE),

5704-516: The postcolonial theatre of August Wilson or Tomson Highway , and Augusto Boal 's Theatre of the Oppressed . Drama is the specific mode of fiction represented in performance . The term comes from a Greek word meaning " action ", which is derived from the verb δράω, dráō , "to do" or "to act". The enactment of drama in theatre, performed by actors on a stage before an audience , presupposes collaborative modes of production and

5828-514: The satyr play —as well as lyric poetry , epic poetry , and the dithyramb ). He examines its "first principles" and identifies its genres and basic elements; his analysis of tragedy constitutes the core of the discussion. Aristotle argues that tragedy consists of six qualitative parts, which are (in order of importance) mythos or "plot", ethos or "character", dianoia or "thought", lexis or "diction", melos or "song", and opsis or "spectacle". "Although Aristotle's Poetics

5952-400: The theatre of ancient Greece , from which it borrows technical terminology, classification into genres , and many of its themes , stock characters , and plot elements. Theatre artist Patrice Pavis defines theatricality, theatrical language , stage writing and the specificity of theatre as synonymous expressions that differentiate theatre from the other performing arts , literature and

6076-484: The well-made plays of Scribe and Sardou gave way to the problem plays of Naturalism and Realism ; the farces of Feydeau ; Wagner's operatic Gesamtkunstwerk ; musical theatre (including Gilbert and Sullivan 's operas); F. C. Burnand 's, W. S. Gilbert 's and Oscar Wilde 's drawing-room comedies; Symbolism ; proto- Expressionism in the late works of August Strindberg and Henrik Ibsen ; and Edwardian musical comedy . These trends continued through

6200-491: The 1970s and 1980s and the development of new Black and Asian writing in the 1990s and into the next millennium. Following a rebrand in 2011, the theatre relaunched itself as Ovalhouse, and continued to programme innovative, cutting edge theatre. Notable artists who began their careers at Ovalhouse include Steven Berkoff , Howard Brenton , Pierce Brosnan , Stella Duffy , Tamsin Greig , Jim Sweeney , David Hare (who worked at

6324-465: The 1st century CE. It began after the development of Greek and Roman theatre and before the development of theatre in other parts of Asia. It emerged sometime between the 2nd century BCE and the 1st century CE and flourished between the 1st century CE and the 10th, which was a period of relative peace in the history of India during which hundreds of plays were written. The wealth of archeological evidence from earlier periods offers no indication of

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6448-407: The 5th century BCE have survived. We have complete texts extant by Aeschylus , Sophocles , and Euripides . The origins of tragedy remain obscure, though by the 5th century BCE it was institutionalized in competitions ( agon ) held as part of festivities celebrating Dionysus (the god of wine and fertility ). As contestants in the City Dionysia's competition (the most prestigious of

6572-553: The Corduba-born Stoic philosopher and tutor of Nero. These tragedies are known for their philosophical themes, complex characters, and rhetorical style. While Seneca's plays provide valuable insights into Roman theater, they represent only a small fraction of the dramatic repertoire that existed in ancient Rome. The first form of Indian theatre was the Sanskrit theatre , earliest-surviving fragments of which date from

6696-598: The French had a larger distinction between comedy and tragedy, whereas the English fudged the lines occasionally and put some comedic parts in their tragedies. Common forms of non-comedic plays were sentimental comedies as well as something that would later be called tragédie bourgeoise , or domestic tragedy —that is, the tragedy of common life—were more popular in England because they appealed more to English sensibilities. While theatre troupes were formerly often travelling,

6820-507: The Romans first experienced theatre in the 4th century BCE, with a performance by Etruscan actors . Beacham argues that they had been familiar with "pre-theatrical practices" for some time before that recorded contact. The theatre of ancient Rome was a thriving and diverse art form, ranging from festival performances of street theatre , nude dancing, and acrobatics , to the staging of Plautus 's broadly appealing situation comedies , to

6944-479: The United States, and Americans spent more on gas and kerosene than on whale oil. The final death knell for whale oil was in 1859, when crude oil was discovered and the petroleum industry arose. Gas lighting was economical enough to power street lights in major cities starting in the early 1800s, and was also used in some commercial buildings and in the homes of wealthy people. The gas mantle boosted

7068-595: The Visual Comfort Probability, and the Daylight Glare Index are some of the most well-known methods of measurement. In addition to these new methods, four main factors influence the degree of discomfort glare; the luminance of the glare source, the solid angle of the glare source, the background luminance, and the position of the glare source in the field of view must all be taken into account. To define light source color properties,

7192-820: The West between the 15th and 19th centuries, including commedia dell'arte from Italian theatre , and melodrama . The general trend was away from the poetic drama of the Greeks and the Renaissance and toward a more naturalistic prose style of dialogue, especially following the Industrial Revolution . Theatre took a big pause during 1642 and 1660 in England because of the Puritan Interregnum. The rising anti-theatrical sentiment among Puritans saw William Prynne write Histriomastix (1633),

7316-491: The White House will be refurbished. Theatre Theatre or theater is a collaborative form of performing art that uses live performers, usually actors or actresses , to present experiences of a real or imagined event before a live audience in a specific place, often a stage . The performers may communicate this experience to the audience through combinations of gesture , speech, song, music , and dance . It

7440-630: The Woods (1986), and The Phantom of the Opera (1986), as well as more contemporary hits including Rent (1994), The Lion King (1997), Wicked (2003), Hamilton (2015) and Frozen (2018). Musical theatre may be produced on an intimate scale Off-Broadway , in regional theatres , and elsewhere, but it often includes spectacle. For instance, Broadway and West End musicals often include lavish costumes and sets supported by multimillion-dollar budgets. Theatre productions that use humour as

7564-455: The adjacent Grade II listed White House, which had been used for arts administration. The White House is the former vicarage for St Mark's Church, Kennington ; there is a blue plaque commemorating the birth of Field Marshal Montgomery , who was born there. The two buildings have been bought by Surrey County Cricket Club , for conversion into hotel accommodation for cricket players at The Oval . The Ovalhouse building will be demolished, while

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7688-436: The arrival of newly appointed warden, Peter Oliver . Oliver refocused the club's activities from sport to drama and became the artistic founder of Oval House Theatre. Oliver staged the first theatrical production at the site; A Taste of Honey by Shelagh Delaney . Oval House Theatre played a key part in supporting the experimental theatre companies of the 1960s and 1970s, the emergence of gay, lesbian and women's theatre in

7812-440: The arts in general. A theatre company is an organisation that produces theatrical performances, as distinct from a theatre troupe (or acting company), which is a group of theatrical performers working together. Modern theatre includes performances of plays and musical theatre . The art forms of ballet and opera are also theatre and use many conventions such as acting , costumes and staging. They were influential in

7936-400: The benefit of a proposed design. In some instances, the materials used on walls and furniture play a key role in the lighting effect. For example, dark paint tends to absorb light, making the room appear smaller and more dim than it is, whereas light paint does the opposite. Other reflective surfaces also have an effect on lighting design. Lighting illuminates the performers and artists in

8060-587: The best known of which is Peking Opera which is still popular today. Xiangsheng is a certain traditional Chinese comedic performance in the forms of monologue or dialogue. In Indonesia , theatre performances have become an important part of local culture, theatre performances in Indonesia have been developed for thousands of years. Most of Indonesia's oldest theatre forms are linked directly to local literary traditions (oral and written). The prominent puppet theatres — wayang golek (wooden rod-puppet play) of

8184-662: The built environment is known as 'architectural lighting design'. Lighting of structures considers aesthetic elements as well as practical considerations of quantity of light required, occupants of the structure, energy efficiency, and cost. Artificial lighting takes into account the amount of daylight received in a space by using daylight factor calculations. For simple installations, hand calculations based on tabular data are used to provide an acceptable lighting design. More critical or complex designs now routinely use computer software such as Radiance for mathematical modeling, which can allow an architect to quickly and accurately evaluate

8308-419: The close order of 13 lumens, a 60 watt incandescent lamp makes around 700 lumens, and a 15-watt compact fluorescent lamp produces about 800 lumens, but actual output varies by specific design. Rating and marketing emphasis is shifting away from wattage and towards lumen output, to give the purchaser a directly applicable basis upon which to select a lamp. Lamp types include: Lighting design as it applies to

8432-405: The color temperature of the lamps will be selected for the best overall lighting effect. Lighting is classified by intended use as general, accent, or task lighting, depending largely on the distribution of the light produced by the fixture. Forms of lighting include alcove lighting, which like most other uplighting is indirect. This is often done with fluorescent lighting (first available at

8556-552: The concepts of dramatic criticism and theatre architecture. Actors were either amateur or at best semi-professional. The theatre of ancient Greece consisted of three types of drama : tragedy , comedy , and the satyr play . The origins of theatre in ancient Greece, according to Aristotle (384–322 BCE), the first theoretician of theatre, are to be found in the festivals that honoured Dionysus. The performances were given in semi-circular auditoria cut into hillsides, capable of seating 10,000–20,000 people. The stage consisted of

8680-460: The cost of lighting occurred with the discovery of whale oil . The use of whale oil declined after Abraham Gesner , a Canadian geologist, first refined kerosene in the 1840s, allowing brighter light to be produced at substantially lower cost. In the 1850s, the price of whale oil dramatically increased (more than doubling from 1848 to 1856) due to shortages of available whales, hastening whale oil's decline. By 1860, there were 33 kerosene plants in

8804-471: The dealings of the pantheon of Gods and their involvement in human affairs, backed by the chorus of Satyrs . However, according to Webster , satyr actors did not always perform typical satyr actions and would break from the acting traditions assigned to the character type of a mythical forest creature. Western theatre developed and expanded considerably under the Romans . The Roman historian Livy wrote that

8928-433: The development of musical theatre . The city-state of Athens is where Western theatre originated. It was part of a broader culture of theatricality and performance in classical Greece that included festivals , religious rituals , politics , law , athletics and gymnastics, music , poetry , weddings, funerals, and symposia . Participation in the city-state's many festivals—and mandatory attendance at

9052-454: The dialogue ( melodrama and Japanese Nō , for example). In certain periods of history (the ancient Roman and modern Romantic ) some dramas have been written to be read rather than performed. In improvisation , the drama does not pre-exist the moment of performance; performers devise a dramatic script spontaneously before an audience. Music and theatre have had a close relationship since ancient times— Athenian tragedy , for example,

9176-420: The distribution of daylight varies considerably throughout the entire year inside a building. In recent years light-emitting diodes (LEDs) are becoming increasingly efficient leading to an extraordinary increase in the use of solid state lighting . In many situations, controlling the light emission of LEDs may be done most effectively by using the principles of nonimaging optics . It is valuable to provide

9300-484: The elements of theatre, the Treatise gives most attention to acting ( abhinaya ), which consists of two styles: realistic ( lokadharmi ) and conventional ( natyadharmi ), though the major focus is on the latter. Its drama is regarded as the highest achievement of Sanskrit literature . It utilised stock characters , such as the hero ( nayaka ), heroine ( nayika ), or clown ( vidusaka ). Actors may have specialized in

9424-477: The entire epic of Ramayana . The powerful Indian emperor Harsha (606–648) is credited with having written three plays: the comedy Ratnavali , Priyadarsika , and the Buddhist drama Nagananda . The Tang dynasty is sometimes known as "The Age of 1000 Entertainments". During this era, Ming Huang formed an acting school known as The Pear Garden to produce a form of drama that was primarily musical. That

9548-399: The entrance to a property. These lights are installed for safety, security, and for decoration. Underwater accent lighting is also used for koi ponds, fountains, swimming pools and the like. Neon signs are most often used to attract attention rather than to illuminate. Vehicles typically include headlamps and tail lights. Headlamps are white or selective yellow lights placed in

9672-481: The existence of a tradition of theatre. The ancient Vedas ( hymns from between 1500 and 1000 BCE that are among the earliest examples of literature in the world) contain no hint of it (although a small number are composed in a form of dialogue ) and the rituals of the Vedic period do not appear to have developed into theatre. The Mahābhāṣya by Patañjali contains the earliest reference to what may have been

9796-502: The eye that affects the human body's clock. The small, head-mounted device measures an individual's daily rest and activity patterns, as well as exposure to short-wavelength light that stimulates the circadian system. The device measures activity and light together at regular time intervals and electronically stores and logs its operating temperature . The Daysimeter can gather data for up to 30 days for analysis. Several strategies are available to minimize energy requirements for lighting

9920-517: The festivals to stage drama) playwrights were required to present a tetralogy of plays (though the individual works were not necessarily connected by story or theme), which usually consisted of three tragedies and one satyr play. The performance of tragedies at the City Dionysia may have begun as early as 534 BCE; official records ( didaskaliai ) begin from 501 BCE, when the satyr play was introduced. Most Athenian tragedies dramatize events from Greek mythology , though The Persians —which stages

10044-628: The first improvisation form. Popularized by 1997 Nobel Prize in Literature winner Dario Fo and troupes such as the Upright Citizens Brigade improvisational theatre continues to evolve with many different streams and philosophies. Keith Johnstone and Viola Spolin are recognized as the first teachers of improvisation in modern times, with Johnstone exploring improvisation as an alternative to scripted theatre and Spolin and her successors exploring improvisation principally as

10168-452: The fixtures on the track or rod with 12 or 24 volts, instead of each light fixture having its own line-to-low voltage transformer. There are traditional spots and floods, as well as other small hanging fixtures. A modified version of this is cable lighting , where lights are hung from or clipped to bare metal cables under tension . A sconce is a wall-mounted fixture, particularly one that shines up and sometimes down as well. A torchère

10292-439: The front of the vehicle, designed to illuminate the upcoming road and to make the vehicle more visible. Many manufactures are turning to LED headlights as an energy-efficient alternative to traditional headlamps. Tail and brake lights are red and emit light to the rear so as to reveal the vehicle's direction of travel to following drivers. White rear-facing reversing lamps indicate that the vehicle's transmission has been placed in

10416-467: The graduates of Christ Church, Oxford . Young people from disadvantaged areas in South London were able to access sports activities, skills training and supervised leisure activities through membership of the club. Ovalhouse's reputation as one of the most important centres for pioneer fringe theatre groups dates from the 1960s, when the club underwent a radical change in the policy of the club with

10540-675: The idea of the national theatre gained support in the 18th century, inspired by Ludvig Holberg . The major promoter of the idea of the national theatre in Germany, and also of the Sturm und Drang poets, was Abel Seyler , the owner of the Hamburgische Entreprise and the Seyler Theatre Company . Through the 19th century , the popular theatrical forms of Romanticism , melodrama , Victorian burlesque and

10664-405: The intersection of two roads to aid in navigation. Sometimes security lighting can be used along roadways in urban areas, or behind homes or commercial facilities. These are extremely bright lights used to deter crime. Security lights may include floodlights and be activated with PIR switches that detect moving heat sources in darkness. Entry lights can be used outside to illuminate and signal

10788-409: The lamp. An incandescent bulb has a color temperature around 2800 to 3000 kelvins; daylight is around 6400 kelvins. Lower color temperature lamps have relatively more energy in the yellow and red part of the visible spectrum, while high color temperatures correspond to lamps with more of a blue-white appearance. For critical inspection or color matching tasks, or for retail displays of food and clothing,

10912-672: The late 19th and early 20th century . After the Edwardian musical comedy that began in the 1890s, the Princess Theatre musicals of the early 20th century, and comedies in the 1920s and 1930s (such as the works of Rodgers and Hammerstein ), with Oklahoma! (1943), musicals moved in a more dramatic direction. Famous musicals over the subsequent decades included My Fair Lady (1956), West Side Story (1957), The Fantasticks (1960), Hair (1967), A Chorus Line (1975), Les Misérables (1980), Cats (1981), Into

11036-412: The light will normally decrease efficacy but increase the directionality and the visual comfort probability . Color temperature for white light sources also affects their use for certain applications. The color temperature of a white light source is the temperature in kelvins of a theoretical black body emitter that most closely matches the spectral characteristics ( spectral power distribution ) of

11160-519: The lighting industry predominantly relies on two metrics, correlated color temperature (CCT), commonly used as an indication of the apparent "warmth" or "coolness" of the light emitted by a source, and color rendering index (CRI), an indication of the light source's ability to make objects appear natural. However, these two metrics, developed in the last century, are facing increased challenges and criticisms as new types of light sources, particularly light-emitting diodes (LEDs), become more prevalent in

11284-469: The lights on and off can occur, particularly during unstable weather conditions or when daylight levels are changing around the switching illuminance. Not only does this disturb occupants, it can also reduce lamp life. A variation of this technology is the 'differential switching or dead-band' photoelectric control which has multiple illuminances it switches from so as not to disturb occupants as much. Occupancy sensors to allow operation for whenever someone

11408-575: The luminosity of utility lighting and of kerosene lanterns. The next major drop in price came about in the 1880s with the introduction of electric lighting in the form of arc lights for large space and street lighting , followed by incandescent light bulb -based utilities for indoor and outdoor lighting. Over time, electric lighting became ubiquitous in developed countries. Segmented sleep patterns disappeared, improved nighttime lighting made more activities possible at night, and more street lights reduced urban crime. Lighting fixtures come in

11532-621: The market. For example, in order to meet the expectations for good color rendering in retail applications, research suggests using the well-established CRI along with another metric called gamut area index (GAI). GAI represents the relative separation of object colors illuminated by a light source; the greater the GAI, the greater the apparent saturation or vividness of the object colors. As a result, light sources which balance both CRI and GAI are generally preferred over ones that have only high CRI or only high GAI. Typical measurements of light have used

11656-464: The most complete work of dramaturgy in the ancient world. It addresses acting , dance , music , dramatic construction , architecture , costuming , make-up , props , the organisation of companies, the audience, competitions, and offers a mythological account of the origin of theatre. In doing so, it provides indications about the nature of actual theatrical practices. Sanskrit theatre was performed on sacred ground by priests who had been trained in

11780-471: The most notorious attack on theatre prior to the ban. Viewing theatre as sinful, the Puritans ordered the closure of London theatres in 1642 . On 24 January 1643, the actors protested against the ban by writing a pamphlet titled The Actors remonstrance or complaint for the silencing of their profession, and banishment from their severall play-houses . This stagnant period ended once Charles II came back to

11904-411: The necessary skills (dance, music, and recitation) in a [hereditary process]. Its aim was both to educate and to entertain. Under the patronage of royal courts, performers belonged to professional companies that were directed by a stage manager ( sutradhara ), who may also have acted. This task was thought of as being analogous to that of a puppeteer —the literal meaning of " sutradhara " is "holder of

12028-410: The necks to facilitate the use of multiple heads with one body. When the heads were not being used, they were stored in a muslin book or fabric-lined box. The heads were always removed at night. This was in keeping with the old superstition that if left intact, the puppets would come to life at night. Some puppeteers went so far as to store the heads in one book and the bodies in another, to further reduce

12152-437: The oldest surviving work of dramatic theory —his Poetics ( c.  335 BCE ). Athenian comedy is conventionally divided into three periods, "Old Comedy", "Middle Comedy", and "New Comedy". Old Comedy survives today largely in the form of the eleven surviving plays of Aristophanes , while Middle Comedy is largely lost (preserved only in relatively short fragments in authors such as Athenaeus of Naucratis ). New Comedy

12276-582: The possibility of reanimating puppets. Shadow puppetry is said to have reached its highest point of artistic development in the eleventh century before becoming a tool of the government. In the Song dynasty , there were many popular plays involving acrobatics and music. These developed in the Yuan dynasty into a more sophisticated form known as zaju , with a four- or five-act structure. Yuan drama spread across China and diversified into numerous regional forms, one of

12400-443: The remainder of the Puritans and very religious of the time. The main question was if seeing something immoral on stage affects behaviour in the lives of those who watch it, a controversy that is still playing out today. The seventeenth century had also introduced women to the stage, which was considered inappropriate earlier. These women were regarded as celebrities (also a newer concept, thanks to ideas on individualism that arose in

12524-410: The removable and replaceable part of a light fixture, which converts electrical energy into electromagnetic radiation . While lamps have traditionally been rated and marketed primarily in terms of their power consumption, expressed in watts , proliferation of lighting technology beyond the incandescent light bulb has eliminated the correspondence of wattage to the amount of light produced. For example,

12648-465: The reverse gear, warning anyone behind the vehicle that it is moving backwards, or about to do so. Flashing turn signals on the front, side, and rear of the vehicle indicate an intended change of position or direction. In the late 1950s, some automakers began to use electroluminescent technology to backlight their cars' speedometers and other gauges or to draw attention to logos or other decorative elements. Commonly called 'light bulbs', lamps are

12772-422: The satyr play eventually found its way to Athens in its most well-known form. Satyr's themselves were tied to the god Dionysus as his loyal woodland companions, often engaging in drunken revelry and mischief at his side. The satyr play itself was classified as tragicomedy, erring on the side of the more modern burlesque traditions of the early twentieth century. The plotlines of the plays were typically concerned with

12896-460: The scale of poetry in general (where the tragic divides against epic and lyric ) or at the scale of the drama (where tragedy is opposed to comedy ). In the modern era, tragedy has also been defined against drama, melodrama , the tragicomic , and epic theatre . Improvisation has been a consistent feature of theatre, with the Commedia dell'arte in the sixteenth century being recognized as

13020-452: The seeds of Sanskrit drama. This treatise on grammar from 140 BCE provides a feasible date for the beginnings of theatre in India . The major source of evidence for Sanskrit theatre is A Treatise on Theatre ( Nātyaśāstra ), a compendium whose date of composition is uncertain (estimates range from 200 BCE to 200 CE) and whose authorship is attributed to Bharata Muni . The Treatise is

13144-596: The spoken parts were written in the Attic dialect whereas the choral (recited or sung) ones in the Doric dialect , these discrepancies reflecting the differing religious origins and poetic metres of the parts that were fused into a new entity, the theatrical drama . Tragedy refers to a specific tradition of drama that has played a unique and important role historically in the self-definition of Western civilisation . That tradition has been multiple and discontinuous, yet

13268-461: The strings or threads". The performers were trained rigorously in vocal and physical technique. There were no prohibitions against female performers; companies were all-male, all-female, and of mixed gender. Certain sentiments were considered inappropriate for men to enact, however, and were thought better suited to women. Some performers played characters their own age, while others played ages different from their own (whether younger or older). Of all

13392-568: The term has often been used to invoke a powerful effect of cultural identity and historical continuity—"the Greeks and the Elizabethans , in one cultural form; Hellenes and Christians , in a common activity", as Raymond Williams puts it. From its obscure origins in the theatres of Athens 2,500 years ago, from which there survives only a fraction of the work of Aeschylus , Sophocles and Euripides , through its singular articulations in

13516-581: The theatre as a stage manager ), Tim Roth , Andrew Bridgmont and Salman Rushdie . Ovalhouse had two theatre spaces, the Theatre Downstairs (up to 200 seats) and the Theatre Upstairs (70 seats); there was also a cafe-bar, gallery space and rehearsal rooms available for public hire. After 2011, the cafe-bar was also used as a venue for live-music and spoken word events. In addition to the professional theatre programme, Ovalhouse had

13640-459: The theatrical culture of the city-state. Having emerged sometime during the 6th century BCE, it flowered during the 5th century BCE (from the end of which it began to spread throughout the Greek world), and continued to be popular until the beginning of the Hellenistic period . No tragedies from the 6th century BCE and only 32 of the more than a thousand that were performed in during

13764-721: The throne in 1660 in the Restoration . Theatre (among other arts) exploded, with influence from French culture, since Charles had been exiled in France in the years previous to his reign. In 1660, two companies were licensed to perform, the Duke's Company and the King's Company . Performances were held in converted buildings, such as Lisle's Tennis Court . The first West End theatre , known as Theatre Royal in Covent Garden , London,

13888-532: The time because of his use of floor space and scenery. Because of the turmoil before this time, there was still some controversy about what should and should not be put on the stage. Jeremy Collier , a preacher, was one of the heads in this movement through his piece A Short View of the Immorality and Profaneness of the English Stage . The beliefs in this paper were mainly held by non-theatre goers and

14012-651: The tools used by a stage lighting designer to produce the desired effects. A set of lighting cues are prepared so that the lighting operator can control the lights in step with the performance; complex theatre lighting systems use computer control of lighting instruments. Motion picture and television production use many of the same tools and methods of stage lighting. Especially in the early days of these industries, very high light levels were required and heat produced by lighting equipment presented substantial challenges. Modern cameras require less light, and modern light sources emit less heat. Measurement of light or photometry

14136-429: The type of play performed by the puppets. Both styles generally performed plays depicting great adventure and fantasy, rarely was this very stylized form of theatre used for political propaganda. Japanese forms of Kabuki , Nō , and Kyōgen developed in the 17th century CE. Cantonese shadow puppets were the larger of the two. They were built using thick leather which created more substantial shadows. Symbolic colour

14260-834: The use of time schedules, occupancy control, and photocell control (i.e. daylight harvesting ). Some systems also support demand response and will automatically dim or turn off lights to take advantage of utility incentives. Lighting control systems are sometimes incorporated into larger building automation systems . Many newer control systems are using wireless mesh open standards (such as Zigbee ), which provides benefits including easier installation (no need to run control wires) and interoperability with other standards-based building control systems (e.g. security). In response to daylighting technology, daylight harvesting systems have been developed to further reduce energy consumption. These technologies are helpful, but they do have their downfalls. Many times, rapid and frequent switching of

14384-519: The wake of Renaissance Humanism ), but on the other hand, it was still very new and revolutionary that they were on the stage, and some said they were unladylike, and looked down on them. Charles II did not like young men playing the parts of young women, so he asked that women play their own parts. Because women were allowed on the stage, playwrights had more leeway with plot twists, like women dressing as men, and having narrow escapes from morally sticky situations as forms of comedy. Comedies were full of

14508-475: The works of Shakespeare , Lope de Vega , Racine , and Schiller , to the more recent naturalistic tragedy of Strindberg , Beckett's modernist meditations on death, loss and suffering, and Müller's postmodernist reworkings of the tragic canon, tragedy has remained an important site of cultural experimentation, negotiation, struggle, and change. In the wake of Aristotle's Poetics (335 BCE), tragedy has been used to make genre distinctions, whether at

14632-540: The young and very much in vogue, with the storyline following their love lives: commonly a young roguish hero professing his love to the chaste and free minded heroine near the end of the play, much like Sheridan's The School for Scandal . Many of the comedies were fashioned after the French tradition, mainly Molière, again hailing back to the French influence brought back by the King and the Royals after their exile. Molière

14756-457: Was a form of dance - drama that employed a chorus whose parts were sung (to the accompaniment of an aulos —an instrument comparable to the modern oboe ), as were some of the actors' responses and their 'solo songs' ( monodies ). Modern musical theatre is a form of theatre that also combines music, spoken dialogue, and dance. It emerged from comic opera (especially Gilbert and Sullivan ), variety , vaudeville , and music hall genres of

14880-440: Was also very prevalent; a black face represented honesty, a red one bravery. The rods used to control Cantonese puppets were attached perpendicular to the puppets' heads. Thus, they were not seen by the audience when the shadow was created. Pekingese puppets were more delicate and smaller. They were created out of thin, translucent leather (usually taken from the belly of a donkey). They were painted with vibrant paints, thus they cast

15004-574: Was designed by Thomas Killigrew and built on the site of the present Theatre Royal, Drury Lane . One of the big changes was the new theatre house. Instead of the type of the Elizabethan era, such as the Globe Theatre , round with no place for the actors to prepare for the next act and with no "theatre manners", the theatre house became transformed into a place of refinement, with a stage in front and stadium seating facing it. Since seating

15128-422: Was no longer all the way around the stage, it became prioritized—some seats were obviously better than others. The king would have the best seat in the house: the very middle of the theatre, which got the widest view of the stage as well as the best way to see the point of view and vanishing point that the stage was constructed around. Philippe Jacques de Loutherbourg was one of the most influential set designers of

15252-516: Was one of the top comedic playwrights of the time, revolutionizing the way comedy was written and performed by combining Italian commedia dell'arte and neoclassical French comedy to create some of the longest lasting and most influential satiric comedies. Tragedies were similarly victorious in their sense of righting political power, especially poignant because of the recent Restoration of the Crown. They were also imitations of French tragedy, although

15376-459: Was popular at one period of time because it was much easier to install than recessed lighting, and individual fixtures are decorative and can be easily aimed at a wall . It has regained some popularity recently in low-voltage tracks, which often look nothing like their predecessors because they do not have the safety issues that line-voltage systems have, and are therefore less bulky and more ornamental in themselves. A master transformer feeds all of

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