Kyla Brooks P4

What are X-Rays?

X-Rays are an electromagnetic wave of high energy and very short wavelength, which is able to pass through many materials opaque to light.

Wavelength Rage

X-rays are electromagnetic waves with wavelengths in the range of 0.01 to 10 nanometers.

Velocity in a Vacuum

X-Rays are a type of electromagnetic radiation. So is light. All electromagnetic radiation goes the same speed in a vacuum. The speed of light in a vacuum is constant. It's about 300,000,000 meters per second.

Interesting Facts!

  • 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.

  • Because your bones and teeth are dense and absorb more X-rays then your skin does, silhouettes of your bones or teeth are left on the X-ray film while your skin appears transparent.


X rays are a form of radiation similar to light rays, except that they are more energetic than light rays and are invisible to the human eye. They are created when an electric current is passed through a vacuum tube. X rays were accidentally discovered in 1895 by German physicist Wilhem Roentgen (1845-1923), who was later awarded the first Noble Prize in physics for his discovery. Roentgen was also a photographer and almost immediately realized that the shadows created when x rays passed through the body could be permanently recorded on photographic plates. His first x-ray picture was of his wife's hand. Within a few years, x rays became a valued diagnostic tool of physicians world-wide.

What are X-rays used for/in?

One of the most common and beneficial uses of X-rays is for medical imaging. X-rays are also used in treating cancer and in exploring the cosmos.

Summary of the Article

In this article it talks about the wave being one of the most common and beneficial uses of waves. It then goes in depth on how the X-ray waves are used, and how they could be harmful if not used properly. This article also talks about the history of x-rays and the different therapies that are being developed.

How does X-rays affect the world positively?

  • Due to their ability to penetrate certain materials, X-rays are used for a number of nondestructive evaluation and testing.
  • X-rays are also essential for transportation security inspections of cargo, luggage and passengers.

How does X-rays affect the world negatively?

  • The problem is that X-rays are a form of ionizing radiation. When normal light hits an atom, it can't change the atom in any significant way. But when an X-ray hits an atom, it can knock electrons off the atom to create an ion, an electrically-charged atom. Free electrons then collide with other atoms to create more ions.
  • The charge can break DNA chains. A cell with a broken strand of DNA will either die or the DNA will develop a mutation.
How Dangerous Are X-Rays?

Summary of the X-ray video

In this video it talks about what the X-ray wave is and where it lies on the wave spectrum. Also it goes into detail about the history of waves and how it was discovered. Then after summing up the history the lady explains how these waves had a negative impact on the human race.