Term
| What is wave-particle duality? |
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Definition
| Exhibit properties of both particles and waves |
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Term
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Definition
•Two types:
-Incandescence
Vibration of an atom
Thermal or blackbody emission
Heating it up until there is light
-Luminescence
Vibration of electrons
Lower temperature
Change of energy level releases photon |
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Term
| What is the point of incidence? |
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Definition
| The point of incidence is the point where the ray of incidence strikes the mirror. |
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Term
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Definition
| A line drawn perpendicular to the surface at the point of incidence. |
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Term
| What is a near zero reflector? |
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Definition
Has almost no reflection.
Small percentage of incoming light. |
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Term
| What does an ellipsoidal reflector do to the light? |
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Definition
| Focus rays from a light source at the near focal point onto the opposite (secondary) focal point of the ellipse. |
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Term
| What does a spherical reflector do to the light? |
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Definition
| Sends light back to the source |
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Term
| What does a parabolic reflector do to the light? |
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Definition
| Reflects light in Parallel Rays |
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Term
| What is the Index of Refraction? |
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Definition
| The ratio between the speed of light in a vacuum and the speed of light in a medium. |
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Term
| Why can’t you touch the envelope of a lamp with your fingers? |
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Definition
| Oil found on the fingers will penetrate the quartz. |
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Term
| What type of light is produced by a Fresnel? |
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Definition
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Term
| How do you create a large pool of light from a Fresnel? |
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Definition
| Move lamp closer or farther from the len. |
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Term
| What type of lights would you use to light a back-drop? |
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Definition
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Term
| What is the optimum throw distance for a CYC light? |
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Definition
| 8’ away from the drop on 8’ centers |
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Term
| What shape of beam do you get from an ETC Source 4 VNSP or NSP par? |
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Definition
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Term
| How do you focus a follow spot? |
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Definition
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Term
| What three types of light sources are found in follow spots? |
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Definition
| Incandescent, Carbon Arc and Short Arc |
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Term
|
Definition
| A set of external shutters |
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Term
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Definition
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Term
| What is the fovea centralis? |
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Definition
| Part of the retina where the cones are located |
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Term
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Definition
| Vision in normal light levels |
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Term
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Definition
| Vision in low light levels |
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Term
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Definition
| Using multiple sources with colors that can be blended to create other colors. |
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Term
| Where is subtractive color mixing used? |
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Definition
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Term
| What are the color filters used in lighting? |
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Definition
| Gels and Dichroic Filters |
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Term
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Definition
| Gels work by absorbing certain wavelengths of light while allowing others to pass through. |
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Term
| How do you prevent photopigment depletion? |
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Definition
| Add complimentary Colors and avoid monochromatic scenes. |
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Term
| What is a problem with using too many colors on a stage? |
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Definition
| You run the risk of mixing to white |
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Term
| Why is experimenting with color important? |
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Definition
| Color can’t be learned in a classroom, you have to experiment with it to see what color will do to different pigments and skin tones. |
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Term
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Definition
| How far the light is from the focus point. |
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Term
| What formula is used to find the throw distance? |
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Definition
| Pythagorean Theorem A2 + B2 = C2 |
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Term
| Where do you find the mf of a fixture? |
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Definition
| From the manual or data sheets |
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Term
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Definition
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Term
| If you determine you need 6.2 fixtures to cover the width of a stage how many fixtures would you use? |
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Definition
|
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Term
|
Definition
| The intensity of a light source |
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Term
| What is a correction factor? |
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Definition
| The percentage of the peak candela from a fixture when using a lamp other than the standard. |
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Term
| What does the transmission value of a filter tell you? |
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Definition
| The percentage of incident light that passes through a filter. |
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Term
| How do you determine the fc of a light that is using a non-standard lamp? |
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Definition
| Multiply the Standard lamp value by the correction factor. |
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Term
| How do you determine the amps needed to power a lighting rig? |
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Definition
| When determining the power draw of your lights assume that all the fixtures will be run at full and multiply the number of fixtures by the wattage of each fixture. Add all the watts together and divide by 120v to calculate the total amp draw. |
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Term
| What is the voltage across hot legs in a single phase system? |
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Definition
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Term
| What do circuit breakers do? |
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Definition
Protects circuit during fault situation
Cut power when current is too high
Overloading of a circuit
Shorting a circuit
Power Surge |
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Term
| How does a magnetic circuit breaker work? |
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Definition
| Uses an electromagnet that increases in strength as the current rises until it reaches the set limit. |
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Term
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Definition
| A conductor that runs from disconnect to the dimmer rack |
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Term
| What are standard rack configuration sizes? |
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Definition
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Term
| What are standard dimmer power sizes? |
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Definition
2.4k rated for 2400w = 24x1.2k
1.2k rated for 1200w = 96x2.4k
Can also have 6k and 12k |
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Term
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Definition
| 96 dimmers and 2400 watts a piece |
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Term
| Why do we have to load balance? |
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Definition
Prevent overloading common return neutral
Prevent harmonics |
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Term
| How does a forward phase dimmer work? |
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Definition
| Switching on is delayed to dim lamp. |
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Term
| How does a reverse phase dimmer work? |
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Definition
| Switching off early to dim the lamp. |
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Term
| What does DMX-512 stand for? |
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Definition
| Digital Multiplex 512 Channels |
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Term
| How do receivers know what information to respond to? |
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Definition
| Assigned to DMX address that corresponds to a DMX Channel |
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Term
| When is a LO signal generated? |
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Definition
| Data (-) at higher voltage potential |
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Term
| What is the maximum length for a DMX cable? |
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Definition
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Term
| What is a DMX splitter and why is it used? |
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Definition
| At signal amplifier that will allow more then 32 devises on a universe |
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Term
|
Definition
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Term
| How do you operate a 2 scene preset console? |
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Definition
| Everything is a fader move (Manual) |
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Term
| How many submasters on the Element 40-500? |
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Definition
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Term
| What do you do in patch mode? |
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Definition
| Assigning dimmers to channels |
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Term
| What can you do in set-up mode? |
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Definition
| Set up console parameters |
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Term
| How can you create visual movement? |
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Definition
| Any change in color, angle, intensity and focus |
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Term
| What skills are useful to a Lighting Designer? |
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Definition
•Ability to read music helps
•A working knowledge of art and art history
•A working knowledge of architectural history
•A working knowledge of history in general
•Research skills
•Organizational skills
•Creativity |
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Term
| What is the first thing a Designer should do after they are hired? |
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Definition
| Read script become familiar with material. |
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Term
| What drawings should the Set Designer provide? |
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Definition
•Set Plot
•Elevations
•Renderings |
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Term
| What clues can a script provide in regards to lighting cues? |
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Definition
| Scene Change, Words, Character entrances and exits, time of day or year |
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Term
| What is the Lighting Concept Statement? |
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Definition
| How the lighting is going to visually represent that vision. |
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Term
| What should be included in cue notations in a script? |
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Definition
|
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Term
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Definition
| Go through the script and make a list of every cue you have marked. Give the cue a number and preliminary transition time, write down the page number and when the cue happens; is it a movement or line that triggers the cue. |
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Term
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Definition
| An area that is 8 to 12 feet in diameter that we focus our lights to on the stage |
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Term
|
Definition
Pick gel colors for each system
Determine # of cuts and size for each color needed
Determine number of sheet based on cuts
Plan on extra gels |
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Term
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Definition
•Convey information
•Check space requirements
•Check sight lines
•Set trim heights |
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Term
| What are on stage lighting pipes called? |
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Definition
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Term
| How are on stage lighting pipes numbered? |
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Definition
| From the Proscenium to Upstage |
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Term
| What are lighting positions in the house called? |
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Definition
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|
Term
| How are balcony positions numbered? |
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Definition
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Term
| What are three types of vertical lighting positions? |
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Definition
| Boom, Box boom, Tail down |
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Term
| How are lighting fixtures on a vertical position numbered? |
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Definition
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Term
| What is the reference point for dimensions on a vertical position? |
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Definition
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Term
| What types of accessories can be included with a lighting fixture on a plot? |
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Definition
Gobos
Top Hats
Color scrollers
Barn Doors
Irises |
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Term
| What is contained in the title block? |
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Definition
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