Color Light and Optics Review

Where is there higher energy ? All the same amount

Light is produced when electrons move from Lab C-1 Light is produced when electrons move from E1 to E3 E3 to E1 Electrons don’t move to other energy levels

How is light produced?

Charged the glow in the dark material with each color Charged the glow in the dark material with each color. Which glowed the brightest and the longest? RED Green Blue 3rd 2nd 1st

Effects of Different colored lights. Red – longer λ, lower f, lower energy Blue–shortest λ, higher f, higher energy

Quantum Theory of Light Photon: Packet of energy (in this case light) The color of each photon is dependent on __ Its energy (wavelength)

Quantum Theory of Light 2 characteristics to consider Intensity of light: How many photons per second are produced The color of each photon High energy photons have shorter wavelengths

How does what you learned support the quantum theory? Red light intensity does not matter because red photons do not have enough energy to excite e’

When combing the red, blue, and green lights – how many colors appeared on the screen? 3 5 6 7 None of the above

3. The three additive primary colors of light are: red, green, and blue. red, yellow, and blue. magenta, cyan, and yellow. orange, green, and violet. What uses them?

4. The three colors of pigments for the subtractive color process are: red, green, and blue. red, yellow, and blue. magenta, cyan, and yellow. orange, green, and violet. What uses them?

A. Red + Green B. Red + Blue C. Blue + Green D. All 3 colors make? YELLOW MAGENTA CYAN WHITE

Strength of signals reaching the brain Strength of signals reaching the brain. Filled boxes - strong signal Empty boxes - no signal. 3 color receptors in the eye NEXT

A = white B = red C = yellow D = Black

We see the bike as blue because of blue light is______ by the bike. REFLECTED

Observe the colored Images under different color light

If white light passes through a red filter the filter allows the passage of  Blue Green Combination of colors

Filters absorb some colors & transmit others as light passes

1. EM spectrum is analyzed by using … frequency. wavelength. energy. All of the above

2. The order of visible light from highest energy to lowest energy is… ROYGBIV TRUE FALSE

3. As the frequency of light waves increases, the wavelength increases. the wavelength decreases. the wavelength stays the same.

4. As the energy of light waves decreases, frequency… increases. decreases. stays the same.

If a store clerk mixes yellow pigment and cyan pigment with white paint, it produces: blue paint. red paint. green paint. violet paint.

Convex Lens / Concave Mirror Images Magnified inverted

Concave Lens / Convex mirror Image Smaller upright

The place where rays of light cross after they have been bent by a converging lens is known as the: critical angle. focal point. optical center. index of refraction.

Which statement describes a diverging lens? Light is bent toward the focal point. Light is bent away from the focal point. Both surfaces are flat. Both surfaces curve outward.

When you look in a convex mirror, the image appears smaller than it really is. lighter than it really is. larger than it really is. darker than it really is.

Which statement about a diverging lens is correct? It bends light inward and creates either a virtual or a real image. It bends light inward and only create a real image. It bends light outward and creates either a virtual or a real image. It bends light outward and can only create a virtual image.

total internal reflection. refraction. absorption. 4. A fiber optic, (or light pipe) traps and transmits light inside its core as pictured in the diagram. The light is trapped because of: diffraction. total internal reflection. refraction. absorption.

1. A packet of energy is known as … phosphorous quark hertz photon

2. The color of each photon is dependent on its …. Wavelength Amplitude Intensity Energy

3. The rate at which energy flows through a given space describes light resonance. pitch. intensity. interference.

The amount of energy in a photon of light is proportional to the medium through which it travels. shape of the light wave it creates. speed of the corresponding light wave. frequency of the corresponding light wave.

If you were sitting in a perfectly dark room with no light, would you be able to see your hands? No, because you need light to be able to see. Yes, you can always see your hands. Yes, after your eyes adjust to the darkness. None of the above

Which angle is the angle of incidence? B C D

In the picture below, the person sees the image of the fish in a different location than the actual fish. This happens because: Examples:

Reflection Specular Diffuse