question

Additive Primaries

answer

Red, Green, Blue or RGB

question

Subtractive Primaries

answer

Cyan, Magenta, Yellow or CYM

question

Red+Green+Blue=

answer

White

question

Cyan =

answer

Green + Blue

question

Magenta =

answer

Red + Blue

question

Yellow =

answer

Red + Green

question

White - Red =

answer

Green + Blue (Cyan)

question

White - Green =

answer

Red + Blue (Magenta)

question

White - Blue =

answer

Red + Green (Yellow)

question

Compliment of Red?

answer

Compliment is Cyan (Green + Blue)

question

Compliment of Green?

answer

Compliment is Magenta (Red + Blue)

question

Compliment of Blue?

answer

Compliment is Yellow (Red + Green)

question

Compliment of Cyan (Green+Blue)?

answer

Compliment is Red

question

Compliment of Magenta (Red + Blue)?

answer

Compliment is Green

question

Compliment of Yellow (Red + Green)?

answer

Compliment is Blue

question

Any color + It's compliment =

answer

WHITE LIGHT!

question

A red filter passes ___ and blocks ____

answer

Passes red and black Green and Blue

question

A Green filter passes ____ and blocks _____

answer

Passes Green and blocks Red and Blue

question

A Blue filter passes _____ and blocks ____

answer

Passes Blue and blocks Red and Green

question

A Cyan (B+G) filter passes ____ and blocks ___

answer

Passes Green and Blue and blocks Red

question

A Magenta (R+B) filter passes _____ and blacks ___

answer

Passes Red and Blue and blocks Green

question

A Yellow (R+G) filter passes ____ and blocks ____

answer

Passes Red and Green and blocks Blue

question

White paper reflects?

answer

All colors

question

Black paper?

answer

Absorbs all colors

question

A Red paper or cloth?

answer

Reflects Red and absorbs green and blue

question

A Green paper or cloth?

answer

Reflects green and absorbs Red and Blue

question

If pure white light is shined on a rose:

answer

The rose is red and the leaves are green

question

If pure red light is shined on a rose:

answer

The rose is red and the leaves appear black

question

If pure green light is shined on a rose:

answer

The rose appears black and the leaves appear green

question

If yellow light is shined on a rose:

answer

The rose is red and the leaves are green (it lets both colors through)

question

Cyan paint reflects? Absorbs?

answer

Green and Blue, Absorbs Red

question

Magenta paint reflects? Absorbs?

answer

Reflects Red and Blue, Absorbs Green

question

Yellow paint reflects? Absorbs?

answer

Reflects Red and Green; Absorbs Blue

question

Red paint reflects? Absorbs?

answer

Reflects Red; Absorbs Green and Blue

question

Green paint reflects? Absorbs?

answer

Reflects green; Absorbs Red and Blue

question

Blue paint reflects? Absorbs?

answer

Reflects Blue, Absorbs Red and Green

question

Cyan + Magenta pigment =

answer

Blue pigment

question

Magenta + Yellow pigment =

answer

Red pigment

question

Examples of color addition?

answer

TV Screen (RGB), Giant LED signs (RGB)

question

Examples of color subtraction?

answer

Mixing pigments and dyes, in printing (Uses CMY), inkjet (Uses CMY)

question

Low frequency, long wavelength lights the penetrate atmosphere:

answer

Red, Sunset, Due to Rayleigh Scattering

question

High frequency, short wavelength light is scattered sideways:

answer

Blue, explains why sky is blue, Due to Rayleigh Scattering

question

Blue is scattered the _____

answer

Most

question

Red is scattered the ____

answer

Least (longer path through atmosphere)

question

Who painted \"The Scream\"

answer

Edvard Munch

question

The \"blood red sky\" was inspired by?

answer

Krakatoa (extreme example of Rayleigh Scattering), Eruption caused cloud of dust, gas, and aerosols (sulfur) to be spread worldwide

question

Why are clouds white?

answer

Clusters of water molecules scatter all colors

question

Water absorbs which color?

answer

Red and Infrared

question

If a diver cut his hand in the ocean, what color would the blood be?

answer

Black

question

Colors with highest frequencies and energy?

answer

UV and Blue

question

Colors with lowest frequency and energy?

answer

Red and IR

question

Na (sodium) vapor appears

answer

Yellow

question

Hg (Mercury) vapor appears

answer

Blue-Green

question

Ne (Neon) vapor appears

answer

Red-Orange

question

Ar (Argon) vapor appears

answer

Blue

question

Fluorescence

answer

Object absorbs high-frequency radiations THEN object emits lower frequency radiation--ENERGY SPLITS UP!

question

In fluorescence one high frequency, high energy proton >>>

answer

= Several low frequency, low energy protons

question

UV Input =

answer

Visible output (Rock and crayons in class)

question

A picture under fluorescent light would cause white to

answer

appear Blue/Green

question

The hot, glowing wire in an incandescent light bulb?

answer

Turnstien filament

question

CFL (Compact Fluorescent light)

answer

Contains HG(Mercury)

question

Early LEDs were:

answer

All red, now they are all colors

question

Three perks of LEDS?

answer

Efficient, long-lasting, no mercury

question

Red photons:

answer

CANNOT make a phosphor glow (due to lower energy)

question

Blue photons:

answer

CAN make phosphor glow (due to higher energy)

question

Fluorescence

answer

On/Off

question

Phosphorescence (\"Glow in the Dark\")

answer

On/Slow Decay

question

LASER

answer

Light Amplification by Stimulated Emission Radiation

question

Incoherent Light

answer

-Has all colors in it (white light -- not in phase) -Has many wavelengths (due to many colors) -All different colors vibrating all different directions

question

Monochromatic Light

answer

-Only 1 wavelength -One color -not in phase

question

Coherent Light

answer

-One wavelength - one color -All waves in phase -All line up

question

Lasers put out what type of light beam?

answer

Coherent Light Beams

question

Modern lasers are gases made by:

answer

Helium and Neon

question

If the electric field is pointing up or down:

answer

It is vertically polarized

question

If electric field goes right or left:

answer

It is horizontally polarized

question

An electric field going every which way is:

answer

Unpolarized

question

Most light is unpolarized, Examples include:

answer

Sunlight, light bulbs, candle flames

question

Polarizers:

answer

Passes one direction of polarized light and then absorbs the other

question

Horizontal Polarizer: (Miniblinds)

answer

Allows horizontal vibrations right through, but absorbs or blocks vertical

question

Vertical Polarizer: (Picket Fence)

answer

Allows vertical vibrations and blocks all others

question

If vertical and horizontal polarizers are crossed?

answer

It goes black (remember example on projector with sunglasses)

question

Horizontal + Horizontal polarizers =

answer

Reduced light

question

Horizontal + Vertical polarizers =

answer

Black when two are crossed

question

Glare is polarized horizontally off of road or lake. Which type of sunglasses do you need?

answer

Ones with vertical polarizers to get rid of glare

question

Polarization by reflection

answer

Unpolarized light goes in and is reflected light (glare). Comes out horizontal where vertical to block out light

question

The polarization coming off of lake?

answer

Horizontal

question

What kind of glasses get rid of glare?

answer

glasses with vertical polarizers

question

Photographers use polarized lenses (or filters) to:

answer

Get rid of glare

question

If you are photographing a large store window, how could you remove glare?

answer

You could use a filter with horizontal polarization

question

3D movies are filmed by 2 cameras because:

answer

Left and right eyes\" see different views (viewpoints)

question

Blue sky is polarized at:

answer

90 degrees from sun

question

Sky near the sun is

answer

Unpolarized

question

Sky near the anti-solar point (180 degrees) is

answer

Unpolarized

question

Sky at 90 degree/right angle:

answer

Strongly polarized

question

Clouds are

answer

Unpolarized

question

Rutherford discover the:

answer

Nucleus

question

Fission

answer

1 large nucleus + 2 (or more) small nuclei + energy////A chain reaction occurs

question

Fissionable materials:

answer

-U233 -U235 -P239

question

Critical Mass

answer

Minimum mass needed to sustain chain reaction

question

Which type of bomb was used in Hiroshima?

answer

U-235

question

Which type of bomb was used in Nagasaki?

answer

PU-239

question

Most common material used?

answer

U-238

question

WWII Gaseous Diffusion (Oak Ridge, TN)

answer

U-235 moves faster than U-238

question

WWII Magnetic Deflection (Oak Ridge, TN)

answer

U-235 bends more than U-238

question

Modern way of making A-Bombs?

answer

Gas Centrifuge (U238 spins on outside while U235 build on inside) Think Parfait.

question

WWII Making PU-239 (Hanford, WA)

answer

N + U-238 (common) > .....[series] > PU- 239

question

Trinity Test: New Mexico

answer

Test of PU-239 Implosion Design

question

Hiroshima Bomb \"little boy\"

answer

U-235--Gun design

question

Nagasaki Bomb \"Fat man\"

answer

PU-239 -- Implosion design

question

Breeder Reactors

answer

Could support USA energy supply for 30-40 years on U-235 alone 3000-4000 year on U-238

question

E=mc2

answer

Energy released=Mass lost&Speed of light

question

Fission: From every 1000g of U-235

answer

1g of mass disappears, turns into energy

question

Fission:: Mass lost?

answer

0.1%

question

Fusion

answer

2 small nuclei > 1 heavier nucleus + energy

question

Hydrogen =

answer

Helium + energy

question

H-Bomb =

answer

Hydrogen

question

E-mc2 as it relates to sun

answer

1% of sun's mass will disappear and radiate away as energy

question

The magenta clothes of a sage performer can be made to look black if illuminated by

answer

Green Light

question

If you add together green light and blue light, the resulting light beam is

answer

Cyan

question

In the course of a fusion reaction

answer

Mass is lost and is converted into energy

question

What type of light is almost totally blocked (absorbed) by Polariod sunglasses worn in the usual way>

answer

Horizontally (glasses are vertically polarized)

question

The \"blood-red\" sky in the painting \"The Scream\" was caused by

answer

Rayleigh Scattering

question

Suppose that air molecules scattered red/orange light most efficiently instead of blue/violet light. What would then be the color of sunsets?

answer

Blue/Violet

question

If you shine a green light at a rose, which pat of it will become warmer?

answer

The red flower

question

In the uranium mines out in Utah, which is the most common in uranium ore?

answer

U-238

question

For which one of the following does the photon have the highest frequency?

answer

Ultraviolet

question

The glare from the surface of the lake is largely

answer

Horizontally polarized

question

If a light beam contains waves with only one wavelength (one color, and one frequency) of light, and all the waves are exactly in phase with each other, then we say that the light beam is:

answer

Coherent

question

For which of the following does the photon have the lowest energy?

answer

Infrared

question

The class demonstration with a phosphorescent screen and two laser pointers (one was a red laser pointer, the other was a blue/violet laser pointer) showed that:

answer

Blue/violet photons could make the phosphor glow, but red photons could not

question

To remove unwanted reflections in windows, the camera operator for a Hollywood movie can make intelligent use of what property of light?

answer

Polarization

question

In the fluorescent lights on out ceiling, the blue/green cast of light comes from:

answer

Mercury vapor

question

Suppose an element called \"X\" releases and average of 2.5 neutrons when it fissions, while an element called \"Y\" releases and average of 2.7 neutrons when it fissions. Which element would have the smaller critical mass?

answer

Element Y would have the smaller critical mass

question

Suppose you make an object glow by illuminating it with an ultraviolet (UV) lamp. When you turn off the UV lamp, the glow from the object very slowly decays. The glow must have been caused by:

answer

Phosphorescence

question

Polarizing filters on camera can produce beautiful cloud effects because

answer

Light from clouds is unpolarized, but the blue sky is polarized

question

Suppose that the sun is near the western horizon and is just about to set. In which one of the parts of sky will a polarizing filter used in photography have maximum effect?

answer

Eastern Sky

question

The process of fluorescence converts:

answer

Lower-energy to higher-energy radiation

question

A sheet of red paper will appear black when illuminated with:

answer

Cyan Light

question

To print color images, what colors of ink are used in most inkjet printers?

answer

CMY (and black)

question

You look through a Polaroid filter at a street light reflected in a puddle of water in the street. The you rotate the filter to various orientations. The reflected image in the puddle appears brightest when to polarization axis of the polariod is:

answer

Horizontal

question

You look through a Polaroid filter directly at a candle. Then you rotate the filter to various orientations. The candle will appear brightest when the polarization axis is:

answer

No! It will be the same brightness at all orientations

question

Suppose a light source produces unpolarized light. What percentage of the original unpolarized light from the light source would be transmitted by two ideal Polariods sandwiched together with their polarization axes aligned (parallel)?

answer

50%

question

If Iran is trying to enrich uranium bombs today, they would not be using the old methods that were used in WWII. Iran would probably be using the modern method called:

answer

Gas centrifuges

question

The essential importance of a breeder reactor is that, as it produces power, it also converts

answer

U-238 to PU-239

question

In WWII, gaseous diffusion separation worked because

answer

Molecules with U-235 move faster that molecules with U-238

question

A \"neon sign\" that actually contains the element neon will appear to eye as

answer

Red/orange

question

At the Trinity test during WWII, it was decided that is was necessary to test the

answer

Implosion design (the gun design was certain to work and was not tested)

question

What color of light must be added to magenta light, in order to obtain white light?

answer

Freen light

question

Yellow light can be considered to be a combination of:

answer

Red and green light

question

What color of pigment can be mixed with cyan pigment, to obtain blue pigment

answer

Magenta pigment

question

An important advantage of LED light bulbs is that LED lights do not contain

answer

Mercury

question

As scuba divers know, the part of the spectrum most absorbed by water is

answer

infrared and red

question

Which scientist is credited with the discovery of the atomic nucleus?

answer

Rutherford

question

During WWII, fissionable material produced by the gaseous diffusion method was the element

answer

Uranium--used in the Hiroshima bomb, but NOT in the Trinity test or Nagasaki

question

Televisions, computer screens, and large outdoor LED display signs have screens with colored dots (or colored rectangles) that are:

answer

Red, green, and blue

question

Suppose you illuminate a magenta pigment with white light. What color does the pigment subtract (absorb) from the white light?

answer

Green

question

The complement of red is

answer

cyan

question

If you mix cyan pigment and yellow pigment, the result is

answer

green pigment

question

Why do we not see stars in the daytime?

answer

Sunlight is Rayleigh scattered by the Earth's atmosphere

question

An area of a TV screen is glowing cyan. If I view that area through a yellow filter, what color will the area appear to my eye?

answer

Green

question

A yellow sheet of paper, illuminated by magenta light, appears

answer

red

question

In the class demonstration that involved turning off the room lights, shining a black light (UV), and making rocks and crayons glow with bright colors, we were demonstrating

answer

Fluorescense

Physics Test 2 Final Review

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