Term
| List four potential adverse affects other than hearing loss that could happen concerning noise |
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Definition
| a)sleep disturbances b)performance reduction c) annoyance responses d)adverse social behavior |
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Term
| 4 construction constraints for the built environment |
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Definition
1) depth of luminaires to plenum 2)size of luminaires to building systems 3)weight of luminaires or other electrical fixtures that may require extra blocking. 4)vented luminaires that vent heat into the plenum |
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Term
| four stages of total seeing process are |
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Definition
light source retransmitters encoder/eyeball decoder/brain |
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Term
| 6 factors by whcih a designer can analyze a lighting project |
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Definition
client motivation client vision daylighting color activities mood |
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Term
| 4 stages in the transformation of energy |
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Definition
electricity electro-magnetic energy visible radiant energy chemical energy |
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Definition
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Definition
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Term
3 visual tools that may be used in the analysis of a lighting design (cavities/zones) |
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Definition
1) floor cavity/zone 1 2)room cavity/ zone 2 3) ceiling cavity/ zone 3 |
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Term
| the unit of measurement of light that strikes a surface |
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Definition
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Term
| the unit of measurement of light reflected from a surface |
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Definition
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Term
| this source produces light by means of an electric arc that excites phospors.______ |
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Definition
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Term
| This source produces light by heating a tungsten filament to a point at which it glows_____ |
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Definition
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Term
| This gaseous discharge source contains a small tube with an electric arc that generates appreciable amounts of light such as a mercury vapor lamp |
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Definition
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Term
| in 1974 this event brought about a major energy conservative initiative and triggered the promotion of low-voltage lighting products |
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Definition
| Energy Embargo/Fuel Embargo |
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Term
| this thin light sensitive membrane lining of the eyeball...often compared to film in a camera |
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Definition
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Definition
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Term
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Definition
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Term
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Definition
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Term
| the parts of the eyeball responsible for color vision and teh greatest concentration located in an area called the fovea. |
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Definition
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Term
| the process by which the eye locates and focuses on objects in the visual field |
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Definition
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Term
| the parts of the eyeball responsible for movement and flicker |
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Definition
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Term
| the bulb, base and inner structure that produces light |
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Definition
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Term
| the proper name for the total lighting device that includes the lamp, reflectors, base and a possible shade. |
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Definition
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Term
| a semi-conductor device with a chemical chip embedded in a plastic capsule. light is focused or scattered using lenses or diffusers |
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Definition
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Term
| PBD the optical difference between two objects involving reflection of light. White-on-white is 0 percent PBD and black on white is 100 percent PBD. Always divide the small percentage by the larger |
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Definition
If you have one object with 85% reflection placed against an object with 50% reflection what is the PBD? show the equation .85/.50 = 58.8 % |
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Term
footlamberts fc x %reflection =fl if you are using a light source projecting 150 footcandles on a surface with 80% reflection..how many foot lamberts will I have? Show the equation. |
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Definition
fc x %R 150x.8 120 foot lamberts |
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Term
| luminaires distribute light by what two means |
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Definition
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Term
| a sleep disorder that affects timing |
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Definition
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Term
| how would you treat acne vulgaris/psoriasis? |
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Definition
| the use of UV light due to it's antibacterial effects |
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Term
| mood disorder associated with winter months |
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Definition
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Term
| 2 things perceptual clarity relies on |
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Definition
1) facial clarity 2)gestures |
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Term
| environments with more stimuli are referred to as |
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Definition
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Term
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Definition
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Term
| when light travels through objects of greater optical density than air it's _________ is slowed or bent |
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Definition
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Term
| visible light is measured in wavelengths known as |
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Definition
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Term
| the degree of saturation, purity or strength of a color (pigment) |
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Definition
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Term
| The degree of lightness or darkness of a color (pigment) |
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Definition
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Term
| This establishes a color temperature of light and the comparison of that light source to objects or surfaces |
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Definition
| CRI or color rendering index |
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Term
| the efficiency of a light source pertaining to color rendering properties and overall product performance. |
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Definition
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Term
| is the diffuse reflection of light from particles in the atmosphere. |
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Definition
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Term
| is the directional beam emitted by the sun |
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Definition
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Term
| cool white light emphasizes what colors of the spectrum? |
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Definition
| the shorter wavelengths of spectrum like blue, green, violet and yellow. |
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Term
| Warm white light emphasizes what colors of the spectrum? |
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Definition
| the longer wavelengths at the end of the spectrum like yellow, red, and orange |
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Term
| contrast provided by the interaction of hues through changes in value or intensity |
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Definition
| law of simultaneous contrast |
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Term
| the visible radiant color of light that matches a certain wavelength of light measured in what? |
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Definition
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Term
| what color light does high pressure sodium emit |
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Definition
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Term
| One concern about using LED refers to specific light waves that may be toxic to those with macular degeneration this is called a? |
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Definition
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Term
| the white light produced by combining the 3 colors of LED is called a ____________ |
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Definition
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Term
| with high power LED what is necessary to maintain reliable light production? |
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Definition
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Term
| What is the most common conductor material? |
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Definition
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Term
| the effect of light emitted from LED sources is known as |
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Definition
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Term
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Definition
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Term
| what reduces or lowers regular voltage for use by special lamps capable of producing light by using less voltage |
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Definition
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Term
| this HID lamp is unsuitable for interiors due to extremely narrow spectral range high in yellow concentration |
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Definition
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Term
| one thing that happens when you dim an HID |
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Definition
| reduce lamp life, color shifts, and reduced efficacy |
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Term
| list one typical gas found in an incandescent lamp |
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Definition
aragon nitrogen or krypton |
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Term
| if you are dimming light in more than one location what kind of dimmer would you use? |
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Definition
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Term
| in an incandescent lamp what 2 variables determine the amount of electric current that is drawn and regulates current. |
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Definition
| filament wire length and diameter |
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Term
| MR low voltage stands for |
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Definition
| multifaceted mirror reflector |
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Term
| this is required for a fluourescet lampt to regulate electric current |
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Definition
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Term
| this fluorescent lamp-ballast circuit combines the feature of the pre-heat and instant start and starters unnessary. |
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Definition
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Term
| list one difference between the older T12 and the T8 and T5 |
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Definition
wattage amount of phosphorescent |
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Term
| during the first 100 hours of usuage the lumen rating of a fluorescent lamp drops by what percentage? |
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Definition
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Term
| this action of the phosphors in a fluorescent lamp allows light to remain visible even with the cycle mercury vapor maintains |
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Definition
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Term
| this multi-vapor HID lamp combines vapors |
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Definition
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Term
| foot candles x percentage of reflectance= |
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Definition
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Term
| light reflected from a smooth, highly polished surface like a mirror |
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Definition
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Term
| what kind of transmission has transparent materials that leave light distribution unchanged |
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Definition
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Term
| the operating efficiency of a light source found by dividing lumens by wattage |
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Definition
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Term
| the rate of flow of an electric current |
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Definition
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Term
| these provide shielding in one direction |
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Definition
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Term
| the provide shielding in many directions |
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Definition
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Term
| light appears to bend at the point where optical densities change from lesser to greater density. |
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Definition
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Term
| light emitted in a direction is measured in |
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Definition
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Term
| light that is reflected from a surface in a given direction |
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Definition
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Term
| a small unit of heat equal to approximately the heat from a wooden kitchen match. |
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Definition
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Term
| converts a form of mechanical energy into electrical energy |
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Definition
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Term
| The best products to use due to the fact that they are designed to resist interference from electronics and other noise. |
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Definition
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Term
| this moves electricity through cables |
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Definition
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Term
| sources such as solid waste or garbage, agricultural waste such as corn cobs and wheat and wood. |
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Definition
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Term
| this receptacle uses electomechanical circuits to trip the circuit in the event of a power surge or vast defficiency. |
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Definition
| GFI or ground fault interrupt |
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Term
1) these act as grounding mechanisms for the system 2) protect plastic insulated wiring 3) protect against fire and other physical damages such as corrosion. |
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Definition
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Term
| these serve as a central point to locate and access electricity and most communication and signaling needs. |
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Definition
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Term
| a completely computerized and intelligent network of electronics that will monitor and control lighting and mechanical systems. |
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Definition
| BAS buidling automation systems |
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Term
| level that determines how many people can be in a space |
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Definition
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Term
| a continuous and unobstructed way of exit travel from any point in a building of structure to a public way and consists of three separate parts |
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Definition
| NFPA and OSHA definition of egress |
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Term
| what are the three parts of an egress |
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Definition
exit access exit exit discharge |
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Term
| what are the 3 ways the NPFA tells us how to illuminate exit signs |
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Definition
externally internally photoluminescent |
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Term
| what is the wattage equation? |
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Definition
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Term
| what is the equation for voltage |
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Definition
| wattage divided by amperes |
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Term
| what is the equation for amperes |
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Definition
| wattage divided by voltage |
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Term
| Visual comfort probability (VCP) depends on what? |
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Definition
| the size and shape of the room the reflectances of room surfaces and the location and light distribution of the luminaires |
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Term
| The change in increasing intensity in color perception is known as what? |
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Definition
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Term
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Definition
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Term
| lamp efficacy is the ratio of what two variables? |
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Definition
| light produced to electricity consumed. |
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Term
| Neon is what type of light source? |
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Definition
| a small diameter cold-cathode lamp |
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Term
| Hot Cathodes are used for virtually all types of what light source? |
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Definition
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Term
| the cyclic variation in the light output of a fluorescent light source is known as what? |
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Definition
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Term
| Dimming Some HID light sources using special ballasts may cause what? |
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Definition
| color shifts and reduced lamp efficacy. |
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Term
| knowledge of the normal color of an object is called? |
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Definition
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Term
| the part of the ballast that is a measurement of how effectively the ballast converts the voltage and current. |
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Definition
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Term
| occupancy is sensed by one of four methods |
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Definition
1) ultra sonice 2) audio 3) optical 4) passive infrared |
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Term
| predominant dimmers today are |
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Definition
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Term
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Definition
| special visual difficulty of a work task |
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Term
| material most used for fabrication of reflectors |
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Definition
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Term
| what is the speed of light |
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Definition
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Term
| two types of lens systems |
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Definition
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