Glossary extracted starting with manual seeds, with BOW for the domain lit and language EN
truss | a horizontal gridwork structure that is suspended from the ceiling or held up by towers on either end; designed to hold lighting instruments; standard equipment for larger industrial shows or rock-and roll concerts |
lamps | units which may be used in lieu of headlamps or in connection with the lower beam headlights to provide road illumination under conditions of rain, snow, dust or fog. |
dim | To lower the amount of voltage to a fixture, thereby decreasing its light output. |
box office | Area where admission tickets are sold for a performance |
fluorescence | the emission of light (luminescence) as the result of, and only during, the absorption of radiation of shorter wavelengths. |
ansi code | A three letter system that has been devised to describe lamps of different manufacture but the same application. |
fallacies of reasoning | Consider Reviewing: Ad Hominem Argument from Authority Argument from Adverse Consequences Appeal to Ignorance Begging the Question Observational Selection Statistics of Small Numbers Non Sequitur Post Hoc, Ergo Propter Hoc False Dichotomy |
text | The words of a script. |
connotation | An indirect implication or suggestion from a word, or string of words, beyond the literal meaning |
incandescence | The emission of visible electromagnetic radiation due to the thermal excitation of atoms or molecules. |
declension | A grammatical term referring to the inflection of certain words for number and case. |
fixed form | Any form in poetry that is bound by traditional rules and conventions |
personal statistics | Age, weight, hair and eye color and body measurements, clothing sizes. |
arena stage | An arrangement of performance and audience space in which the audience is seated around most if not all of the performance space. |
fluorescent lamp | a low-pressure mercury electric-discharge lamp in which a fluorescing coating (phosphor) transforms sonic of the UV energy generated by the discharge into light |
headset | A headphone/microphone combination used in communications systems. |
waivers | Union permission allowing deviation from standard contract terms. |
flashback | A reversion back to events that have previously taken place |
erythemal flux | radiant flux evaluated according to its capacity to produce erythema of the untanned human skin, It usually is measured in microwatts of UV radiation weighted in accordance with its erythemal efficiency |
analog or analogue | adj., Non-digital audio recording and playback technologies |
above minimum fee | Fees contracted at rates in excess of the minimum fees and terms provided in a basic agreement. |
vhs | 1/2" videocassette format. |
amphitheatre | an oval or round structure having levels of seats rising outward from an open space or arena. |
speech | Whilst this term refers to the ability to speak, it also means to address a group or to give a talk. |
altitude | The vertical angular distance of a point in the sky above the horizon |
dimmer | A device which controls the intensity of lights. |
tight shot | To frame of a shot with little or no space around the central figure. |
control cable | A cable used to transmit digital or analog signals from a control console to the apparatus to be controlled. |
syndication | A system of broadcasting programs through independent distributors. |
cadence | Pitch and rhythm of a vocal pattern. |
densitometer | a photometer for measuring the optical density (common logarithm of the reciprocal of the transmittance or reflectance) of materials. |
composition | Placement of people or objects within the performing area or film frame. |
template | (pattern, gobo) a metal pattern that, when placed inside an ellipsoidal spotlight, throws a shadow pattern on the stage |
soft edge | A beam pattern edge that is not very distinguishable. |
host | A performer who introduces or segues segments of a program |
smoke machine | A machine which produces clouds of white non-toxic fog |
prequel | A movie that presents the characters and events before the time of a previously filmed movie. |
forced call | A call to work less than 12 hours after dismissal on the previous day. |
in | Toward the center of the acting area. |
alliteration | The purposeful repetition of sounds, particularly the beginning consonants of words |
walla walla | General background crowd noise. |
room cavity ratio | In lighting calculations, a measure of room proportion as determined by dimensions of length, width, and height. |
floor pocket | A wiring device with receptacles recessed into to the floor with a hinged cover. |
advance | Money received before rendering services. |
sonnet | Originated by Giacomo de Lentino in the 13th century, it is one of the world's most famous and most taught poetic forms, known for its 14-line lengths and variable rhyme schemes |
mask | To hide from the audience's view, often with black velour curtains or other scenic elements |
glow discharge | an electric discharge characterized by a low, approximately constant current density at the cathode (on the order of 10 jiA/mm2) at low cathode temperature, and a high voltage drop (typically 50 V or more) |
phrenology | studying the shapes of a person head for clues of intelligence and abilities |
ellipsoidal reflector spotlight | a spotlight in which a lamp and an ellipsoidal reflector are mounted in a fixed relationship directing a beam of light into an aperture, where it may be shaped by a pattern, iris, shutter system or other insertion |
treatment | A narrative outline of a dramatic work for cinema or broadcast |
kelvin | In the metric system, a graduated scale used to measure temperature with 0O (-2730C) being the total absence of heat (absolute zero) |
bridge | (a) A transverse section of the stage capable of being raised or lowered |
denotation | The literal definition of a word, devoid of contextual or emotional issues or connotations. |
germicidal lamp | a low-pressure mercury lamp in which the envelope has high transmittance for 254-nm radiation |
hook | A memorable phrase or melody which is repeated in a song. |
twofer | A special power cord that has one male connector electrically connected to two female connectors via two separate cables. |
feet | See foot. |
efficacy | A measure of the luminous efficiency of a radiant flux, expressed in lumens per watt as the quotient of the total luminous flux by the total radiant flux |
mime | A special kind of performance in which no words are spoken |
scansion | The analysis of a line of poetry (by "scanning") to determine its pattern of stressed and unstressed syllables, which usually are divided into metrical feet |
headlamp | a major lighting device mounted on a vehicle and used to provide illumination ahead of it |
informal modeling | Model work in a department or retail store or other commercial establishment where the model is not on a platform and can iinteract with customers. |
lumen | The quantity of luminous flux emitted within a unit solid angle (one steradian) by a point source with one candella intensity in all directions. |
discomfort glare factor | the numerical assessment of the capacity of a single source of brightness, such as a luminaire, in a given visual environment for producing discomfort capacity of a single source of brightness, such as a luminaire, in a given visual environment for producing discomfort (this term is obsolete and is retained only for reference and literature searches) |
flat | A section of scenery constructed of timber covered with canvas |
toenail | to nail obliquely through the end of one board into a second board |
flashtube | a tube of glass or fused quartz with electrodes at the ends and filled with a gas, usually xenon |
epizeuxis | A type of repetition used as a device, where a word is repeated with emphasis. |
magic realism | The expression refers to fiction that merges realistic elements with the fantastic |
domestic run | Television broadcast of a program within the broadcast area of a particular station. |
flashing light | a rhythmic light in which the periods of light are of equal duration and are clearly shorter than the periods of darkness, See group flashing light, interrupted quick-flashing light and quick-flashing light. |
distribution temperature | (of a light source) the absolute temperature of a blackbody whose relative spectral distribution is most nearly the same in the visible region of the spectrum as that of the light source. |
kilowatt | 1000 watts. |
lens | A transparent material, usually glass, shaped to bend light rays as they pass through it. |
gobo | A thin metal disc cut with a pattern and placed in front of a light source so the pattern can be projected. |
color rendering index | A measurement of the amount of color shift that objects undergo when lighted by a light source as compared with the color of those same objects when seen under a reference light source of comparable color temperature |
femme fatale | Term used to describe a female character whose seductive charm leads men into compromising or dangerous circumstances. |
cross-fade | To bring lights down in one stage area of the stage while bringing lights up in another stage area. |
adaptation | The reworking of one medium into another |
emissivity/emittance | The ratio of radiance (for directional emissivity) or radiant exitance (for hemispherical emissivity) of an element of surface on a temperature radiator to that of a blackbody at the same temperature |
fortuny system | A system of stage lighting by indirect means by an Italian inventor |
grease-paint | Term for theatrical make-up with an oil or "grease" base. |
fretwork | ornamental woodwork frogging: a type of decorative braiding/trim on a jacket fust: become moldy |
hot spot | Area of greatest illumination. |
pay-television | Broadcast TV that requires the viewer to make a payment to receive a specific program. |
parts of speech | A traditional classifying system for words in terms of their function. The main catagories are: |
apostrophe | addressing a person, personified object, abstract quality, or idea as if it was actually present. |
technical director | the person who figures out how the set will be built and then oversees construction; sometimes in charge of lighting as well |
footlambert | A unit of luminance equal to 0.3183010 candela per square foot, or to the uniform luminance of a perfectly diffusing surface emitting or reflecting light at a rate of one lumen per square foot, or to the average luminance of a surface emitting or reflecting light at that rate |
crossing | moving from one point on the stage to another, especially to a diametrically opposed point. |
claymation | Animation using three dimensional figures figures made of clay or plasticine. |
set | Stage area that is visible to the audience. |
specular angle | The angle of mirror reflection (angle of incidence equals angle of reflectance). |
finno-ugric | A language group including such languages as Finnish, Hungarian, Estonian and others. |
open circuit | A circuit that has a physical break or disconnection. |
ground light | visible radiation from the sun and sky reflected by surfaces below the plane of the horizon. |
sling | A strong flexible, webbed belt or steel cable in the shape of a loop. |
graybody | a temperature radiator whose spectral emissivity is less than unity and the same at all wavelengths. |
transmission factor | The ability of a medium to allow for the transmission of light. |
candela | The SI unit of luminous intensity (formerly called the candle) |
pilot program | A program which is produced as one of a projected series to enable the producer to determine whether the producer will produce the series at a later date. |
exit | the portion of a means of egress that segregates all other spaces in the building or structure by fire resistant construction in order to provide a protected way of travel to the exit discharge |
diffused lighting | lighting, provided on the workplane or on an object, that is not predominantly incident from any |
false cognate | Words which appear in two languages, looking like the same word, but with different meanings. |
lamp lumen depreciation | The decrease over time of lamp lumen output, caused by bulb wall blackening, phosphor exhaustion, filament depreciation and other factors. |
transient adaptation | The process of the eye adapting from viewing an area at one level of light to an area of higher or lower level. |
mini series | Episodic program with a set number of episodes; for TV broadcast. |
slug line | Notation appearing in a script before each shot detailing the location, date, and time that the following action is to occur in. |
near cyc | A cyclorama light placed close to the cyclorama, generally less than 8’. |
ellesmere manuscript | An illustrated (or illuminated) manuscript thought to date from the fifteenth century of Chaucer's, The Canterbury Tales. |
hold | A contractual obligation to reserve a block of time to work |
cinematographer | Person responsible for all aspects of filming. |
ultraviolet radiation | Any radiant energy within the wavelength range of 0.001 to 0.38 microns. |
texture | A two dimensional image that is overlaid onto three dimensional geometry to give the impression of a texture in computer modeling. For example you might create an image of rusty steel and then lay it on a geometric model of a steel beam. The texture added to the shape gives us information about what the beam is made from and what sort of state it is in. |
power distribution | A term used to describe electrical equipment that is specially designed to intake electricity and route it to output wiring device or devices. |
candlepower | A term used in place of intensity . |
overture | The music which begins a performance. |
overcast sky | A sky luminance distribution three times brighter near (C.I.E |
evergreen | A song that continues being popular year after year. |
post-colonial literature | This term refers to writings in the colonial language (e.g English, French etc) that derive from former colonies of Empires |
daylight factor | a measure of daylight illuminance at a point on a given plane, expressed as the ratio of the illuminance |
network | A regional or national organization which offers member broadcast stations programs and other services. |
lamp | an arc light source utilizing mercury vapor and metal halide additives for an approximation of daylight (5000-6000-K) illumination |
hard edge | A beam pattern edge that is very clear and distinguishable. |
sequel | A film that begins at a time after a previous film ends. |
erythemal effectiveness | the capacity of various portions of the ultraviolet spectrum to produce erythema. |
unit set | A set that can represent several different settings by making only slight changes to scenic elements. |
saturated | A colour containing a high percentage of colour is considered saturated . |
near infrared | The region of the electromagnetic spectrum between 0.77 to 1.4 microns |
footlights | A row of lights with reflectors placed along the floor in front of the stage |
echo | A reference that recalls a word, phrase, or sound in another text |
downstage | The area of the performance space that is closest to the audience. |
fill light | Supplementary illumination used to reduce shadows |
non prime time | TV broadcast time before 7 p.m |
memory board | A contral console that has computerized functions and an ability to electronically store data. |
audio | Pertaining to sound or sound technology. |
connotation | Any association or attitude that is embedded in a word's meaning or is brought to mind by the mention of a word or phrase |
filter | a device for changing, by transmission or reflection, the magnitude or spectral composition of the flux incident upon it |
crawl | Screen credits or written text that slowly move into the screen from one side and off the other side of the screen. |
fovea | a small region at the center nf the retina, subtending about 2°, containing cones but no rods and forming the site of most distinct vision. |
out clause | Section of a contract which defines the circumstances under which a performer can terminate the contract. |
conjunctivitis | inflammation of the conjunctiva also known as pink-eye conscripted: put into military use contiguously: alongside contraposed: separated into opposing groups convivial: festive/merry cravenly: so lacking in courage as to be worthy of contempt |
fill light | supplementary illumination to reduce shadow or contrast range. |
cover | another term for Understudy |
unities | Time, place and action |
peer-reviewed journal | A journal which contains articles of a scholarly nature. The articles have been reviewed by others who are experts in their field. This therefore creates a higher degree of reliability for the articles in such a publication. |
classic | Three broad meanings include, firstly, works from ancient Greece or Rome ('classical' times) |
synesthesia | Figurative expression of the perception of one sense in terms of another |
irradiance | The density of radiant flux incident on a surface. |
property-man or master | The member of the stage staff in charge of properties |
proof | A sample photograph for testing photo quality. |
scale | Minimum amount paid to an actor as specified by union contract. |
room tone | A recording which records existing noise at the location |
digital multiplex | A system that simultaneously transmits more than one digital signal. |
photocell | A device that measures the amount of incident light present in a space. |
far ultraviolet | the region of the electromagnetic spectrum extending from 100 to 200 nm. |
exhibit model | Models who host conventions and other promotion assignments. |
bunches | A metal hood or reflector containing a number of lamps for stage lighting |
cross | To move from one area of the performance area to another. |
iris | An arrangement of thin, movable, heat-resistant metal plates (leaves) that form an adjustable circular opening. |
child labor laws | Government regulations (vary from state to state) covering the employment of children. |
meal penalty | A fee imposed upon a producer for failure to provide meals or meal breaks as specified by contract. |
contrast | The ratio of the luminance of an object to that of its immediate background. |
alliteration | The use of repeated consonants in neighbouring words |
non-dim | A circuit supplying electrical power to a luminaire by means of a switch or a relay in order to permit an on-off function rather than a dimming function. |
dealer commercial | Commercial produced and paid for by a national advertiser which is then turned over to local dealers to book air time, usually with the dealer's tag added. |
line voltage | A term that usually means 120 AC volts. |
fovea | A small region at the center of the retina, subtending about two degrees and forming the site of the most distinct vision and greatest color discrimination. |
field angle | The angle a which the beam edges are 10% of the centre beam candlepower. |
make-up | The make-up of the features by wigs, false hair, and cosmetics |
ampacity | The maximum allowable electrical current, in amperes, that a conductor can safely carry |
meditation | A contemplation of some physical object as a way of reflecting upon some larger truth, often (but not necessarily) a spiritual one |
wash | Even, overall light on performance space or background. |
dark theatre | A day or night with no performance. |
union scale | A schedule of minimum payments as defined by a union contract. |
jumper | An electric cable and connector assembly. |
product placement | Diplaying specific products in a film or TV production usually in exchange for money. |
pardoner | In the Middle Ages, a member of the religious community with permission to sell Papal indulgences. Chaucer's The Canterbury Tales features a Pardoner. |
refraction | The process by which the direction of light changes as it passes obliquely from one medium to another in which its speed is different. |
instrument | A lighting unit. |
flat | Unit of scenery consisting of a wooden frame, covered with muslin, canvas or a wooden veneer which is painted with scenic elements. |
foreshadowing | An event or statement in a narrative that in miniature suggests a larger event that comes later. |
burner lights | Round or square clusters of lamps on standards |
colour temperature | A factor given for lamps, comparing their colour to that of a blackbody at a given temperature. |
hazardous location | an area where ignitable vapors or dust may cause a fire or explosion created by energy emitted from lighting or other electrical equipment or by electrostatic generation. |
rhapsody | An intensely passionate verse or section of verse, usually of love or praise. |
beam apple | The angle at which the beam edges are 50% of the centre beam candlepower. |
box set | A set (usually of an interior space) composed of a back and two side walls and sometimes a ceiling. |
cheating | the practice of turning one's body towards the audience even while keeping the head facing one's scene partner |
prop table | Backstage table upon which props are placed before use. |
radiant energy | Energy traveling in the form of electromagnetic waves |
projection | Making voice, movements, and gestures clear to all sections of the house. |
ambient light | Electric and/or natural lighting throughout a space that produces uniform general illumination. |
dry ice | Frozen carbon dioxide which produces a low-lying mist or fog when dropped into boiling water. |
euphemism | A word or phrase that takes the place of a harsh, unpleasant, or impolite reality |
stanza | A group of lines roughly analogous in function in verse to the paragraph's function in prose. |
product conflict | Inability to accept commercial work for a product because the actor is contractually associated with a competing product. |
chief electrician gaffer) | The head of the electrician crew. |
plosive | A consonant sound associated with a burst or release of air (such as /b/ or /t/) |
zeugma | The use of one word (usually a verb) to "yoke" two or more words to which it applies in different senses (e.g., see Alexander Pope´s Belinda, who may "stain her Honour, or her new Brocade"; The Rape of the Lock 2.107 [1714]). |
hot-cathode lamp | an electric-discharge lamp whose mode of operation is that of an arc discharge |
ambivalence | When the reader has mixed feelings or opposing views towards an event, character or object. |
analog multiplex | A system that simultaneously transmits more than one analog signal. |
model | a performer engaged to display or physically illustrate a product, idea or service. |
trestle | the framework used to support a platform |
onomatopoeia | Use of a word or words the sound of which approximates the sound of the thing denoted (e.g., "splash"). |
light | a rhythmic light in which the light and dark periods are equal. |
lighting batten | A metal structure wired for electric lamps running from P.S |
chromaticity | Refers to the dominant or complementary wavelength and purity aspects of the color taken together, or of the aspects specified by the chromaticity coordinates of the color taken together. |
lift | A height adjustable stand or tower. |
rhythm | Also ironic in that, by the time he’s done re-defining what he thinks rhythm should mean he’s all but re-defined it as cadence! |
pejoration | A process of language change where, over time, the meaning of a word changes to take on a more negative meaning than the original meaning. |
pidgin | A type of language, developed by the simplification of two or more languages |
tracking a platform | building a track into the stage that helps to guide a platform to its proper place |
safe area | The area in camera 's viewfinder just outside of the "viewable" area in the viewfinder. |
editor | Person who assembles the visual and audio elements of a film into a completed film. |
doxolojer | hucks misuse of the word "doxology" which is a hymn or prayer |
dichroic | A type of metallic coating applied to glass and some other materials that allows certain wavelengths of light, or other electro magnetic radiation, to pass while reflecting all others. |
bellicosity | readiness to fight boater: a kind of men's formal summer hat Boche: offensive term for a German, especially a soldier; pronounced the same as bosh, meaning nonsense bona fide: legitimate, genuine |
lamp | a high-intensity discharge (HID) lamp in which light is produced by radiation from sodium vapor operating at a partial pressure of about 1.33 X l0 Pa (100 Torr) |
archetype | A recurrent image that emerges from deep-seated associations that are anchored in universal patterns or structures of experience |
phonology | A study of language which considers the distribution of speech patterns and their rules. |
aesthetics | The appreciation and analysis of beauty |
couplet | A pair of lines, almost always rhyming, that form a unit. |
virelai | A form of medieval French verse used in poetry and music |
effect | An event or a moment intended to create a particular emotional reaction. |
feeder cables | A set of electric cables, usually individually insulated conductors with a high ampacity, used to remotely connect portable racks, power distribution racks etc. |
theme | A unifying, central subject or idea that provides a literary work with its stance or approach |
opera | A dramatic composition set to music with or without spoken dialogue, in which the music is the main feature |
neologism | A new word or phrase that ties together existing words or ideas |
alliteration | The repetition of sounds in nearby words, most often involving the initial consonants of words (and sometimes the internal consonants in stressed syllables). |
trough | a long metal container in which lamps are set |
gel | A plastic colour media for modifying a beam of light. |
lumen method | A method of estimating the interior illuminance due to window daylighting at three locations within a room |
cone | A retinal receptor that dominates the retinal response when the luminance level is high and provides the basis for the perception of color. |
specular reflection | The process by which incident light is redirected at the specular (mirror) angle. |
chorus | A person or group of people which stand outside the action and remark upon it |
class a commercial | the most lucrative remuneration for performance in a commercial. |
focal length | Distance from the focal point of a lens to the plane of the film. |
decibel | Measurement of sound volume. |
luminance | The luminous intensity of a surface in a given direction per unit area of that surface as viewed from that direction; often incorrectly referred to as "brightness." |
flightcase | Metal framed wooden box on wheels which is used for transporting equipment from one performance venue to another. |
figure of speech | A phrase or expression which uses words not in their literal sense. |
but not too closely | OK, so he thinks there are rules but they’re not really “rules” |
abstract | An abstract style (in writing) is typically complex, discusses intangible qualities like good and evil, and seldom uses examples to support its points. |
line | In poetry, a line is a single row of words. |
trade show | A promotional event held in a convention center in which products marketed to retailers. |
hue | The attribute of a color that allows it to be classified as red, yellow, blue, and so on. |
dark humor | A sardonic, sarcastic, paradoxical form of humor that allows readers or audiences to observe and find comedy in disastrous or sobering events such as death, illness, misforture, or other events that normally sadden and disturb. |
aestheticism | Stemming from France, this European movement countered materialism and utilitarianism during the late 19th century. |
boom | A vertical pipe mounted in a base, used to hang lighting fixtures |
personification | Treating an abstraction as if it were a person, endowing it with humanlike qualities |
glare | the sensation produced by luminance within the visual field that is sufficiently greater than the luminance to which the eyes arc adapted to cause annoyance, discomfort or loss in visual performance and visibility |
coursework | Essays or work done in a student's own time, rather than in examination conditions |
eschatology | A branch of theology dealing with Judgement Day and the Second Coming. |
fluorescent | A discharge lamp in which a phosphor coating transforms ultraviolet energy into visible light. |
high-mast lighting | illumInation of a large area by means of a group of luminaires which are designed to he mounted in fixed orientation at the top of a high mast, generally 20 m (65 ft) or higher. |
elevation | the angle between the axis of a searchlight drum and the horizontal |
high-bay lighting | interior lighting where the roof truss or ceiling height is greater that approximately 7.6 m (25 ft) above the floor. |
voucher | A form used to record arrival and departure times and pay rates |
azimuth | The horizontal angular distance between the vertical plane containing a point in the sky and true south. |
illuminance | The density of incident luminous flux on a surface; illuminance is the standard metric for lighting levels, and is measured in lux (lx) or footcandles (fc). |
prosody | The study or science of versification and its many aspects |
setting | Time and place in which a performance is set. |
antithesis | the opposition of words or phrases against each other in balances contrast. |
critique | A detailed analysis of a work. |
architectural set | a permanent structure that can be altered to suggest different locations by adding scenic pieces, draperies, and properties |
copyright | Legal rights to control reproduction and sale of intellectual property. |
light shelf | A horizontal shelf positioned (usually above eye level) to reflect daylight onto the ceiling and to shield direct flare from the sky. |
matte surface | Surface from which the reflection is predominantly diffuse, with or without a negligible specular component. |
peripheral vision | The seeing of objects displaced from the primary line of site and outside of the central visual field. |
wattage | The power consumed by a circuit. |
gross fee | Total compensation paid to a performer not including money paid for contracted expenses such as per diem allowances or travel costs. |
high concept | A film that includes elements that creates excitement in order to draw a large audience |
teaser | A preview of a program used to enticing the listener to watch the program. |
running crew | Group of people who perform all the technical tasks during the show. |
epiphany | A moment of sudden realization or understanding in which the true meaning of certain events is revealed. |
amperage | A component of electricity used to measure the number of electrons moving past a given point in a circuit. |
delirium tremens | nervous and mental disorder caused by alcoholism |
hazer | A machine that produces clouds of white, non-toxic fog through the vaporisation of mineral oil. |
floor plan | A drawing that show the location of scenic elements. |
air check | Recording a program during broadcast for archival or legal purposes. |
matrix | A patching apparatus that can be a patch panel or diode pin matrix. |
rushes | First, unedited film footage processed for daily viewing as the shooting of the film progresses. |
spot announcement | An advertising or public service broadcast message between 10 to 120 seconds long. |
gaseous discharge | the emission of light from gas atoms excited by an electric current. |
stage | Area upon which a performance is presented. |
floodlight | A luminaire consisting of only a lamp and reflector with fixed spacing; generally, the reflector has a diffused finish and is often physically large in size |
inverse-square law | The law stating that the illuminance at a point on a surface varies directly with the intensity of a point source, and inversely as the square of the distance between that source and that surface. |
stalls | Floor level seating area. |
diffuser | a device to redirect or scatter the light from a source |
primary colours | Colours from which all other colours may be evolved by mixtures |
monitor | A raised section of roof that includes a vertically (or near-vertically) glazed aperture for the purpose of daylighting illumination. |
ballast | An electrical apparatus that limits the electrical current through an arc source. |
prefix | An affix or addition to the beginning of a word. |
flicker index | a measure of the cyclic variation in output of a light source, taking into account the waveform of the light output |
convention | A literary rule, practice or custom, which has been established through frequent and common usage in texts. |
segue | Transition from one shot to another. |
hemispherical reflectance | the ratio of all of the flux leaving a surface or medium by reflection to the incident flux |
lexicon | Traditionally this term refers to a dictionary of some form, however, the word is now used to refer to the distinctive words applied by a particular writer in their work |
vital statistics | Personal, physical traits such as date of birth, hair and eye color, body measurements. |
travel-time | Fee paid for time spent commuting to a non-studio film location. |
absorption | A process by which incident radiant flux is converted to another form of energy, usually (and ultimately) heat. |
scriptorium | A location often in a church or monastery where manuscripts are studied and stored. |
interstitial | Brief, non-commercial, non-PSA material which fills short periods of time between main programs on pay or cable television. |
goniophotometer | a photometer for measuring the directional light distribution characteristics of sources, luminaires, media and surfaces. |
flag | To wave an object or a hand in front of an instrument to determine its coverage area. |
downstage | The area on stage that is closest to the audience. |
iso booth | (isolation booth) A small room for recording a sound in isolation from other sounds. |
ellipsoidal | A luminaire embodying a lamp, an ellipsoidal reflector, a framing device, and a single or compound lens system, together with provisions for accommodating a pattern holder and patterns. |
head sheet | A letter size sheet with approximately 15 to 20 reduced size head shots on one page. |
field angle | the angle between the two directions for which the intensity is 10% of the maximum intensity measured in a plane through the nominal beam centerline |
infrared radiation | Radiation with wavelengths too long to be perceived by the human eye (that is, longer than 0.77 microns) and less than 1,000 microns |