X-rays


What are they?
X-rays were first observed and documented in 1895 by Wilhelm Conrad Roentgen, a
German scientist who found them quite by accident when experimenting with vacuum
tubes.As the wavelengths of light decrease, they increase in energy.
X-rays have smaller wavelengths and therefore higher energy than ultraviolet waves.
Are they dangerous?
X-rays can also be harmful. In the early days of X-ray science, a lot of doctors would
expose patients and themselves to the beams for long periods of time and they start to belaive that you could
get cancer if you are exposed to x-rays to much.
Where do they come from?
they come from the neucleus in an atom.
How do we detect them?
The detector that detects x-rays then determines as best it can the direction, brightness changes,
and spectral intensity (or color) of the incoming photons, and when they arrived.
external image PocketIII_X_ray_portable_mineral_detector_2210_1.jpg
What can they be used for?
they use them in hospitals to see the bones in the body. so if they have a problem and they think it could
be broken they will take an xray and then will be able to see what's the problem with the bone.
They can also be used in airports to check peoples bags so they dont have a bomb or something
dangerous.
external image 8c5dc377-c4a6-4b11-a5b8-060fe6c3b761-721122.JPGexternal image Metal-Detector-Xray-Baggage-Inspection-Machine.jpg





In the table below, fill the cells with very brief notes. Use the other pages to gather the information from, and you may want to go outside of this wiki if you really can't find the information here (though I'd be surprised!).



Gamma
X-rays
UV
visible
IR
microwaves
radio
How are they generated?
They are made by stars,supernovas,black holes and pulsars
they came from a neucleus of an
atom.
Powerful UV lights come from the sun, and man made things sun tan beds, UV lights.
hot things
lumenecnt things
stars
photons
Infared waves come from the sun and fire.
They are emitted from large stars and in mobiles they are made with a transmitter chip
Naturally occurring radio waves are made
by lightning, or by astronomical objects.Manmade radio waves are generated by a transmitter.
How are they detected?
Gamma-ray detectors typically contain
densely packed crystal blocks.
The detector that detects x-rays then determines as best it can the direction, brightness changes, and spectral intensity (or color) of the incoming photons, and when they arrived
You can use a filtrate, or a UV detector. The filtrate option is cheaper.
our eyes
Cameras andnight vision goggles
We use receivers if they are used in mobile phones
Radio waves are detected by the
use of radio telescopes
How might they be dangerous?
they are very dangerous
to living creatures
they can give you
cancer
The harmful effects from exposure to ultraviolet (UV) radiation can beclassified as acute or chronic. The acute effects of UV-A and UV-B exposure are
both short-lived and reversible.
no
They can burn you and give u cancer
Prolonged exposure can damage the cataracts
It is believed that exposure to large doses of radio waves can result in disorders such as cancer
What are the main or most significant uses?
Doctors use gamma-ray imagingto see inside your body
Gamma rays provide information
about some of the most energetic
phenomena in the universe
they are used in hospitalsfor bones
and in airports for checking bages.
In Medicine, Ultraviolet waves are effective in killing bacteria and viruses.In Industry, the Food and Drug industry uses germicidal lamps to disinfect various types of products.
Seeingdisplaying info
lighting areas
Thermal imaging,short range communications,
TV remotes.
They are used mainly for heating up food and
in mobile phones
Radar can even be used to find oil or see what
chemicals are in soil. Radios also use these waves to send and receive information

Good work. The x rays section has well chosen content and the table is very good.
Don't forget that tables can be used to help with positioning images.
B+

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