X-rays were discovered in 1895 by Wilhelm Conrad Roentgen, a German physicist. X-rays are a form of electromagnetic radiation that can penetrate opaque objects and are used in medical imaging and crystallography. They have wavelengths between 10 nanometers and 100 picometers. Common medical applications of x-rays include CT scanners, bone x-rays, linear accelerators, and backscatter x-rays. A CT scanner uses x-rays and a rotating tube to take multiple images from different angles and compiles them with a computer to produce cross-sectional images of the body.

1. Group 6
“X-ray”

2. Definition
Wavelength & frequency
Inventor
Application
Conclusion

3. Definition
• X-ray light is very strong and is not visible to
human eyes
• That rays can penetrate objects opaque. X-rays
are commonly used to look at something we
cannot see directly.
• X-rays or Roentgen rays are a form of
electromagnetic radiation
• X-rays are commonly used in the diagnosis of
medical images and X-ray crystallography.
• X-rays are a form of ionizing radiation and can be
dangerous.

4. Wavelength
• The wavelength ( ) of x-ray range 10
nanometers to 100 picometers (with
frequency 1016 Hz until 1020 Hz).
• These X-rays have a shape similar to that of
ordinary light rays, infrared and radio waves;
differing only in terms of wavelength other
features.

5. Electromagnetic Spectrum

6. Inventor
Wilhelm Conrad Roentgen a physicist at
the University of Wurzburg, Germany,
was first discovered in 1895 Roentgen
rays while experimenting with cathode
rays. At that time he saw the onset of
fluorescence light from barium crostal
platino cyanide the tube Hittorf-Crookes
are electrified. He soon realized that this
phenomenon is a new discovery that he
steadfastly continued on going
investigations in the following weeks.
Not long after the light was discovered
he calls a new light or X-rays only later
did people call these rays Roentgen rays
in honor of Wilhelm Conrad Roentgen.

7. Application
CT Scanner Bone X-ray machine

8. Application
Linear Accelerator Backscatter X-ray

9. CT Scanner Computed tomography or CT scan
works on the same principles as fixed
plate x rays, only with a CT scan, an x
ray tube rotates around the
individual, taking hundreds of images
that are then compiled by a
computer to produce a two-
dimensional cross section of the
body. Although many images are
taken to produce a CT scan, the total
dose of radiation the individual is
exposed to is low.

10. Schematic of CT Scan

11. Conclusion
• X-ray light is very strong and is not visible to
human eyes
• That rays can penetrate objects opaque. X-rays
are commonly used to look at something we
cannot see directly.
• The application of x-rays is CT Scanner, Bone x-
ray machine, Linear Accelerator, Backscatter X-
ray etc.

12. Reference
• http://dhewyjenssen.wordpress.com/2012/09/18/pengertian-dari-
gelombang-elektromagnetik-sinar-x/
• http://bumbata.co/11112/tips-pemindaian-sinar-x-ketahui-4-jenis-mesin-
sinar-x/
• http://okghiqowiy.blogspot.com/search?q=sinar+x
• http://www.healthofchildren.com/U-Z/X-Rays.html#ixzz2Ljbm5e3S
• http://www.snipertechno.com/2012/09/pengertian-sinar-x-dan-
manfaatnya.html
• http://makinpintar.wordpress.com/2011/08/16/sinar-x/
• www.youtube.com