Transcript kiosk em - Solon City Schools

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.
Microwaves
By: Allie Unger and Adam Haniff
Microwaves
DEFINITION
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 Information
Microwaves are used in
telecommunication and
cooking.
Without microwaves we
would not have
microwave ovens.
The energy used in
microwaves can
convert into infrared
energy.
Microwaves reflect off of
metal.
Microwaves easily transmit
through air, glass, paper,
and plastic.
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
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