light = straight path an atom: emits light when an electron moves from a high to a low energy level....
TRANSCRIPT
Light = straight pathLight = straight path
An atom:emits light when an electron moves from
a high to a low energy level.
absorbs energy as its electronsmove from a low to a high energy level.
The three primary colors of light arered, green, and blue.
The three primary pigment colors are:magenta, cyan, and yellow.
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The primary colors used to construct an image on a color TV monitor are:
red, green & blue.
Light can have different colors because it can have different:
frequencies, wavelengths and energies
A laser is a device that emitsa single frequency of light.
X
The pictures represent the strength of signals reaching the brain from the color
receptors in the eye. Filled boxes indicate a strong signal. Empty boxes represent no signal.
NEXT
Which picture represents someone seeing the color we think of as RED?
as WHITE? as BLACK?
B = red
A = white
D = Black
We see a tree because of light__________ by the tree.
reflected
Why is this cloth blue?
The cloth absorbs all colors except blue; reflects only blue light to our eyes.
Filters absorb some colors & transmit others as light passes
If white light through a red filterthe filter allows the passage of
Absorbs all the colors except red….red passes through
If a laser printer mixes yellow & magenta pigment on the paper, it produces:
red
The dotted line perpendicular to the surface is called the:
NORMAL
The angle of incidence is identified as:
B
Ray #2 is called the:
reflected ray
A converging lens changes the direction of light through the process of:
refraction
rays of light cross after they have been bent by a converging lens at the focal point.
In the picture below, the person sees the fish image in a different
location than the actual fish because:
The light rays reflected from the fish bend at the surface of the water.
The index of refraction best describes:the ability of a material to bend light
rays. Material n
Vacuum 1.00
Air 1.0003
Water 1.33
Plastic 1.49
Glass 1.56
Diamond 2.41
A light ray strikes a lens parallel to the axis of the lens. Which of the following
rays best represents the path of the light ray as it leaves the lens?
Ray a
The human focuses on objects that are near & far away because:
the lens changes shape
Types of Lenses
A fiber optic, (or light pipe) traps and transmits light inside its core as pictured
in the diagram.
The light is trapped because of total internal reflection.