Term
|
Definition
| atom with equal # of protons and electrons |
|
|
Term
|
Definition
| where electron orbits atom |
|
|
Term
|
Definition
| flow of electricity through conductor |
|
|
Term
|
Definition
| capacity of electrical system to do work |
|
|
Term
|
Definition
| measurement of electrical change between two bodies |
|
|
Term
| 3 wires in AC circuit and what they're used for |
|
Definition
| green-ground; white-neutral; black-hot |
|
|
Term
|
Definition
|
|
Term
| why light can be considered a particle |
|
Definition
| travels in straight lines and can travel through a vacuum |
|
|
Term
|
Definition
| diffraction, reflection, refraction |
|
|
Term
| what does diffraction mean? |
|
Definition
| waves fill in behind obstruction |
|
|
Term
| what does refraction mean? |
|
Definition
| waves bend as they pass from one medium to another |
|
|
Term
|
Definition
| where light strikes surface of reflector |
|
|
Term
|
Definition
| angle between normal and reflected angle |
|
|
Term
| what does an ellipsoidal reflector do? |
|
Definition
| redirects light rays to a secondary point |
|
|
Term
| what is the focal length of a lens? |
|
Definition
| distance from optical center to principal foci |
|
|
Term
| what type of lens is a plano convex lens? |
|
Definition
|
|
Term
| conventional fixtures commonly used in theatre |
|
Definition
| ERS, leko, fresnels, par cans, cyc lights, strip lights, follow spots |
|
|
Term
|
Definition
| ellipsoidal reflector spotlight |
|
|
Term
| what are ERS fixtures commonly used for? |
|
Definition
| front lights, key lights, specials |
|
|
Term
| what was the fresnel lens ORIGINALLY developed for? |
|
Definition
|
|
Term
| what type of reflector is used in a fresnel fixture? |
|
Definition
|
|
Term
| what type of reflector is used in a par lamp? |
|
Definition
| PARABOLIC aluminized reflector |
|
|
Term
| how do you focus a par can? |
|
Definition
|
|
Term
| what are par cans typically used for? |
|
Definition
|
|
