Electromagnetic Waves and Light

Flashcards on Electromagnetic Waves and Light

Electromagnetic waves

Transverse waves

Electromagnetic waves

Can travel through a vacuum

Electromagnetic Wave with Shortest Wavelength

X-Rays

Wavelength of Infrared Waves Compared to Ultraviolet Waves

Longer

Velocity of Visible Light Waves Compared to Radio Waves

The same

Source of All Electromagnetic Waves

Vibrating charges

Different from Gamma rays, Radio waves, Light waves, X-rays

Sound waves

Main Difference Between a Radio Wave and a Light Wave

Wavelength

Main Difference Between a Radio Wave and a Sound Wave

Basic nature

Waves emitted by Heat lamps

Infrared waves

Clouds

transmit UV light

Wavelengths of Electromagnetic Waves with Higher Frequencies

Shorter

Shadow Produced by an Object Held Close to Paper in Sunlight

Sharp

Light waves

Transverse waves

Ultimate source of electromagnetic waves

Vibrating charged particles

The primary purpose of polarized sunglasses

to block glare from reflections.

Materials that light doesn't pass through

Opaque

How far is a light-second?

300,000 km

Light that reflects at glancing angles

Polarized parallel to the surface

Light reflected from a lake surface is polarized

Horizontally

Polarized Light After Passing Through a Polarizer

Totally Polarized

Light Transmitted When Polarizing Filters are at Right Angles

Zero

Light Transmitted by Two Ideal Polarizing Filters with Parallel Axes

50%

Perception of depth

the combination of views in the eye-brain system

The color of an object we see is determined by the

frequencies of light reflected by the object.

Most Sunlight Color

Yellow

Why Most UV Radiation Doesn't Reach the Ground

Absorbed by a protective layer of ozone gas in the upper atmosphere

Human sensitivity to light

Yellow-green

Glass Pane With Higher Temperature

Green glass

Colors Seen on TV Result From Color

Addition

Colors Seen on a Photograph Result From Color

Subtraction

Tennis Ball Color

Greenish-yellow

Different Colors of Light Correspond To Different Light

Frequencies

Complementary Colors

Produce white light when added together

Mixing Blue and Yellow Paints Results in Green

between blue and yellow pigments, all colors are absorbed except green

The three paint colors that are useful for color subtraction are

magenta, cyan, and yellow.

Magenta light

red and blue light

The color of an opaque object is determined by the light that is

Reflected

Red Paper Illuminated With

cyan light

Most Comfortable Color To Wear

Green

Color of Sunsets

Blue

Color of the Sun

Red-orange

Air molecules

resonators that scatter blue light

Air molecules

Absorb and then reemit blue light, scattering it in all directions

The true color of water is

Greenish-blue

The colors of light emitted by incandescent gases show the

identities of atoms in the gas.

The three primary colors of light for additive color mixing are

Red, green, and blue

Color on a White Sheet

Yellow

Color on a White Sheet

Magenta

Complementary Color of Blue

Yellow

The colored dots on a TV screen

red, blue, and green.

Photograph of Persons Yellow Sweater

Blue

The complementary color of green is

magenta