X-RAYS

First discovered:
X-rays were discovered by A.w Goodspeed on February 22, 1890

He found these so called rays naked to the eye. They could penetrate through the objects like wood and metal.

Nowadays we use x-rays for medical purposes.
But they also are very harmful to the skin.

HOW DO X-RAYS TAKE A PICTURE

A beam of high energy electrons crashes into a metal target and x-Rays are produced.

A filter near the X-ray source blocks the low energy electrons so only the high energy rays pass through the a patient toward a sheet of film.

Along with the sheet of film, a second sheet of film prevents the scattered x-Rays from fogging the picture.

Calcium in bones is considered a type of metal so when the film is placed on the Body it allows the technicians to take a picture.

WAVELENGTHS

• range from 0.01 to 10 nanometers
• corresponding to frequencies in the range 30 petahertz to 30 exahertz
• shorter in wavelength than UV rays and longer than gamma rays.

IMPORTANT WEBSITES

• Science.howstuffworks.com
• Faculty.cord.edu