Reading...
Play button
Play button
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;
39 Cards in this Set
- Front
- Back
- 3rd side (hint)
|
light
|
electromagnetic wave eye can detect (freq)
|
what kind of wave? what's diff about it?
|
|
|
color with shortest wavelength
|
violet (4 times 10 to the negative 7)
|
|
|
|
color with longest wavelength
|
red (7 times 10 to the negative 7)
|
|
|
|
ray
|
straight line that represents the path of a light beam
|
|
|
|
speed of light
|
3.00 times 10 to the 8 meter per second
|
|
|
|
luminous
|
emits light
|
|
|
|
illuminated
|
reflects light
|
|
|
|
luminous flux
|
rate at which light is emitted
|
|
|
|
lumen
|
unit for luminous flux
|
|
|
|
illuminance (not illuminated)
|
illumination of a surface
|
|
|
|
incandescent
|
luminous because of heat
|
|
|
|
candela
|
measurment of luminous intensity
|
|
|
|
measurement of light depends on ...
|
sensitivity of the human eye
|
|
|
|
spectrum
|
ordered arrangement of colors from violet to red
|
|
|
|
primary colors
|
red green and blue. add them and get white
|
|
|
|
secondary colors
|
yellow cyan and magenta. (two primary colors make secondary)
|
|
|
|
contemporary color
|
the color you add to another to produce white (ex- blue is the contemporary to yellow)
|
|
|
|
red and green =
|
yellow
|
|
|
|
red and blue =
|
magenta
|
|
|
|
blue and green =
|
cyan
|
|
|
|
complementary to blue
|
yellow
|
|
|
|
complementary to green
|
magenta
|
|
|
|
complementary to red
|
cyan
|
|
|
|
dye
|
molecule that absorbs certain wavelengths of light and transmits/reflects others
|
|
|
|
black
|
absence of reflected light
|
|
|
|
white
|
spectrum of colors (all)
|
|
|
|
primary pigment
|
(yellow cyan magenta) a pigment that absorbs only one color. ex= yellow absorbs blue light and reflects red and green.
|
|
|
|
secondary pigment
|
(red green blue) pigment that absorbs 2 primary colors. ex= red absorbs green and blue light
|
|
|
|
colors in films caused by
|
interference of light reflected from the front and back surfaces of the film
|
|
|
|
polarization
|
only lets in light from a single plane, end of parallel
|
|
|
|
diffuse reflection
|
uneven surface, rays reflected in many diff directions.
|
|
|
|
regular reflection
|
beam of light falls on a very smoothe surface and reflected rays are parallel
|
|
|
|
refraction
|
change in angle of light when moving from one medium into another
|
|
|
|
more optically dense
|
speed of light is slower
|
|
|
|
total internal refletion
|
occurs when light passes from a more optically dense o less optically dense at an angle so great that there is no refracted ray.
|
|
|
|
critical angle
|
when the refracted is 90
|
|
|
|
dispersion
|
separation of light into a spectrum by refraction
|
|
|
|
light leaving a prism is ________ to form a _______
|
dispersed, spectrum
|
|
|
|
rainbow is caused by
|
dispersion of a raindrop
|
|
