18+Electromagnetic+Radiation


 * Electromagnetic radiation comes from the radiation of the different waves that compose the electromagnetic spectrum. They form when electric fields and magnetic fields are perpendicular to each other and the wave itself.


 * Different waves from the electromagnetic spectrum are composed of separate wavelengths, unique to the type of wave. At the top of the electromagnetic spectrum exists gamma radiation.


 * Gamma rays have the shortest wavelengths and therefore the most destructive characteristics. Also at the top of the electromagnetic spectrum exist x-rays and ultraviolet rays. These to are also more destructive due to their high frequency and small wavelength.


 * X-rays are used to take pictures of the inside of your body, so if they're so destructive, why do we direct them at ourselves. Well if you have ever gotten an x-ray taken of your body then you probably know that the part of your body that is not being x-rayed is covered by a very heavy apron, which contains lead so that the x-rays do not penetrate to the human tissue that is not being photographed so as to minimize the amount of damage done to the patient.


 * Ultraviolet rays are the rays from the sun that burn your skin. You protect yourself from these waves by using sun tan lotion.

blue, indigo, and violet.
 * Visible light comes in the middle of the electromagnetic spectrum. They can be seen with the naked eye. The colors of visible light are: red, orange, yellow, green,


 * Infrared waves come next and are the waves that produce heat. common example is a stovetop with heating coils (not an open flame stove).


 * Radar waves are next and are used to find the speed of an object. Police officers use radar guns that use these radar waves to find speeding vehicles on the highway (or any other street/road).


 * Microwaves are the second longest waves and are used in microwave ovens to heat up food. The absolute longest wave in the electromagnetic spectrum are radio/TV waves.


 * As their name suggests, the radio and TV waves transmit their waves to your TV and radio sets so that you may enjoy them.




 * Electromagnetic waves look like two waves next to each other, with troughs and crests perpendicular to each other, but they cross at the midpoints. They act this way because of the electric and magnetic characteristics.