Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
13 Cards in this Set
- Front
- Back
|
Frequency |
The number of times something vibrates back and forth in a Givin length of time |
|
|
Medium |
The substance through which a wave moves |
|
|
Electromagnetic Spectrum |
Tyne entire range of electromagnetic waves of different wavelengths and frequencies |
|
|
Refraction |
Occurs when a light ray changes direction as it passes from one material to another |
|
|
Law of Reflection |
When a light ray is reflected from a surface the angle of incidence equals the angle of Reflection |
|
|
Convex Lens |
A lens that bulges outward and carries light rays passing through it to converge |
|
|
Focal Point |
Point where rays of light that enter a convex Lens parallel to the optical avoids converge |
|
|
Cornea |
A convex Lens located at the front of the eye |
|
|
Pupil |
The dark opening into the interior of the eye |
|
|
Iris |
The colored part of the eye,located behind the cornea |
|
|
Retina |
Sheet of light sensitive cells at the back of the eye |
|
|
Pigment |
A material used to change the color of other materials or objects |
|
|
Lens |
A transparent object with at least one curved side that causes light waves to bend |
