KIOSK EM. Radio Waves By #13 and #25 Definition An extremely long electromagnetic wave that is invisible to the unaided eye. Example displaying how wide.

KIOSK EM

Radio Waves

By #13 and #25

Definition

• An extremely long electromagnetic wave that is invisible to the unaided eye.

Example displaying how wide of a range radio waves span

Frequency Range

• 10 to the 9th power Hz and lower. They also have wavelengths that measure from tenths of meters to millions of meters.

Common Uses

• Radio stations (AM and FM).

• Two way radios

• Radar (Radio Detection and Ranging)

• TV stations

• Radio Telescopes

Fun Facts

• The B-2 spirit has a radar signature the size of one eighth of a mosquito.

• Radar guns are used in law enforcement.

• Radio telescopes pick up radio signals from space.

MicrowavesBy: Allie Unger and Adam Haniff

MicrowavesDEFINITION

A short electromagnetic wave longer than infrared but shorter than radio waves that is commonly used in cooking and communication.

FREQUENCY

The frequency of a microwave is

3 x 1011 – 3 x 109

Because microwaves reflect off the inside walls of a microwave oven, they may form standing waves. Food lying at the antinodes where the vibrations are at maximum, get cooked more than food lying at the nodes, where there are no vibrations. For that reason, most microwave ovens rotate food items to ensure even heating.

Important InformationMicrowaves are used in telecommunication and cooking.

Without microwaves we would not have microwave ovens.

Microwaves reflect off of metal.

Microwaves easily transmit through air, glass, paper, and plastic.

The energy used in microwaves can convert into infrared energy.

Infrared light

By Alex Patterson &

Claudia Victoroff

Infrared Light• Infrared light is defined as light non visible to the

human eye with longer and slower waves than red light.

• Frequency- 3*1011Hz<f<3*1014Hz• Wavelength- 1mm>λ>700nm

Practical application of infrared light

• This type of electromagnetic wave can be useful to the human population by;

• Infrared photography- capturing photo with infrared waves. This can show where the thermal energy is in the object shot.

• Remote control devices- to communicate messages with the television or other electrical appliance

• Weather satellites can track cloud movement with thermal imaging equipment

Ultraviolet Light

Table Of Contents

• Definition

• Frequency range

• Fun Fact 1

• Fun Fact 2

• Fun Fact 3

• Fun Fact 4

Definition

The invisible light that lies above the violet portion of the spectrum and before X-rays.

Frequency Range

7.5x1014 Hz<f<5x1015Hz

Fun Fact 1

Ultraviolet light is used for sterilizing medical instruments, fruits, and vegetables.

Fun Fact 2

Also used for identifying fluorescent materials.

Fun Fact 3

Higher energy and shorter wavelength than visible light.

Fun Fact 4

9% of sunlight is UV (ultraviolet light). UV light causes sunburn because of its high energy it passes through clouds, causing sunburn even on cloudy days.

Visible Light

By:

Visible Light Info

• The Visible Light Spectrum is all the light that is visible to the unaided human eye.

• The frequencies of visible light range from 4.3*1014(Red) to 7.5*1014(Violet).

This shows the separation of visible light from the invisible light.

Facts

• Without visible light we would not have many important things, including photography (colored), optical telescopes, and optical microscopes. All of which helped us greatly in varying forms of study.

• The colors in visible light can change when the light is refracted, because its speed changes.

• The visible light spectrum does not include unsaturated colors, which require the constructive or destructive interference of colors.

Table of Contents

About X-rays.

Important Info.

By: 23 and 17

X- Rays

• Definition- Waves lower than ultraviolet waves that have a wavelength of 10 to the -8th power. These waves can’t be seen.

• Frequency range~ 5* 10 to the 14th power Hz through 3* 10 to the 21st power Hz Doctors use X-rays to take pictures of bones

Important Info.

1. X-rays are not visible (more info.)

2. X-rays are used as a medical tool (more info.)

3. X-rays are harmful because they can kill cells, or turn them cancerous (more info.)

Not Visible

• X-rays are beyond the ultraviolet part of the spectrum, which have higher energy and shorter wavelengths.

Medical Purpose

• Doctors use X-rays by passing that waves through the body. Most waves go straight through the body but some are absorbed into bones and tissue. The waves that pass through the body show up as waves on the photographic plate. Where there is white is where the bones and tissue are.

X-rays Can Be Harmful

• When exposed to too many X-rays, it can kill cells in your body, or turn them cancerous.

Gamma Rays

Number 6 and 12

Definition and Frequency

• High energy electromagnetic wave, with high energy photons.

• 3 x 1018 < f < 3 x 1022 Hz

This is a picture of a Gamma Ray

Facts

• Used for food irradiation, which destroys bacteria in food.

• Can kill diseased cancer cells.• Highest electromagnetic wave.• Have highest frequency and shortest

wavelength.

Process of food irradiation