click below
click below
Normal Size Small Size show me how
Study for Light Test
i am going to study on this and maybe get a good grade
Term | Definition |
---|---|
Light | a form of energy |
transparent | transparent materials allow almost all the light that hits them to pass through |
translucent | translucent materials let some light pass through but scatter other light |
opaque | opaque objects do not let any light pass through them |
pupil | opening that lets light in |
Iris | attracts attention |
optic nerve | sends pictures to the brain |
vitreous humor | holds the jelly of salts and protein |
lens | focuses the light |
sclera | the white covering |
retina | the picture is upside down there |
muscle | opens up pupil in dim light, closes in bright light |
cornea | outside layer |
blood vessels | bring food to the eye |
refraction | bending of a wave caused by the change of speed that occurs when the wave passes from one medium into another. |
reflection | the bouncing back of a wave off an object or surface |
absorption | the taking in of light energy by an object |
focal point | light enter a curved glass at different angles then come together at the focal point |
ultra-violet light | very fast light that can cause a sun burn |
infrared light | very slow light that gives off heat and is visible to some animals such as a Pit Viper |
wavelengths | measurement from Crest to Crest or trough to trough |
eyelids | a piece of skin that covers your eye |
eyelashes | hair growing from your eyelids |
Tapetum | in animals that are nocturnal |
tear duct | outside of your eye on the right and left side |
rainbow | red, orange,yellow, green, blue, purple Roy G. Biv |
prism | a glass object that light goes through and bends, then comes out as a rainbow |