module 18 Flashcards
What is wavelength?
The distance from the peak of one light or sound wave to the peak of the next.
What are the variations in wavelength?
They vary from the short blips of cosmic rays to the long pulses of radio transmission.
What is the relationship between wavelength and frequency?
Short wavelength corresponds to high frequency, while long wavelength corresponds to low frequency.
What determines the color we see?
The color is based on the light’s wavelength.
What is intensity?
How bright or loud a sound is, depending on wave energy.
What is the retina?
The inner eye surface with cells that process light into images.
What is accommodation?
How the lens adjusts to focus on near or far objects.
What are rods?
Retinal cells that see black, white, and gray, helping with night/side vision.
What are cones?
Retinal cells near the center that work in daylight, seeing details and colors.
What is the optic nerve?
Sends signals from the eye to the brain.
What is a blind spot?
The optic nerve spot that leaves the eye with no receptors.
What is the fovea?
The center of the retina, packed with cones for sharp vision.
