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2. Definition Inventor Figures Characteristics How to produce it Application in daily life Conclusion

3. Gamma rays (γ) are an energetic form of electromagnetic radiation.It has an extremly high frequency and therefore per photon has a high energy. Gamma rays are produced by emitted from the nucleus of some unstable radioactive atoms.

4. Frequency Range: more than 10 20 Hz Gamma rays have the highest frequency of all EM radiation.

5.  Gamma rays have the shortest wavelength of all ElectroMagnetic radiation.  Wavelength Range: <10 -12 m

6. Inventor Figures In the end of 1890, Bacquerel discovered radioactivity inadvertently. He covered the uranium salt by using thick black paper and put it on the photographic plate. And then he put it into the drawer without exposed it to sunlight first. A few days later he found that the photographic plate became dark. He speculated that the radiation is stronger than the X ray. Antoine Henri Becquerel

7. Gamma ray is discovered by French chemist and physicist, Paul Ulrich Villard in 1900 while studying the radiation emanating from Radium, Polonium and Uranium. He finds that gamma-ray can not be deflected by magnetic fields. Inventor Figures Paul Ulrich Villard

8. In 1914, Ernest Rutherford and Edward Andrade showed that gamma rays were a form of electromagnetic radiation by measuring their wavelengths using crystal diffraction. The measured wavelengths were similar to those of X-rays and are very short. It was Ernest Rutherford who named gamma rays. Inventor Figures Edward Neville da Costa Andrade Ernest Rutherford

9. Radiation of short wavelength and high frequency Not deflected in a magnetic field The greatest energy The strongest penetration

10. They are commonly produced by the decay of radioactive materials because of the activity of nucleus such as cobalt-60. And also created by other processes such as supernova explosions, fusion, fission and lightning.

11. In industrial section, to find out the structure of metal. In agricultural section, to make a superior seed In nuclear technical, to make an isotop radio In medical section, for therapy and diagnose In pharmaceutical section, for sterilization Food irradiation In trade section, it is used to control the security of commodity export

13. This device contains radiation source in which there are cobalt-60, and able to emit radiation at 0.75 curies which can penetrate up to 15– 18 cm of steel The radiation is caught by the a vertical tower of gamma detector and then translated by VACIS (Vehicle and Cargo Inspections) software application into an image The image has an extention.tif and can be annotated by a voice file that has and extention.wav And then the image will be analyzed by image analyst

14. Akronim VACIS adalah Vechicle and Cargo Inspection System. Portal VACIS Inspection System adalah suatu sistem yang menggunakan Radiasi Gamma dari isotop radioaktif, merupakan sumber yang dapat menghasilkan image dari suatu kendaraan termasuk semi trailer, dengan tujuan untuk dapat memeriksa cargo tanpa harus membongkar isi container.

15. Gamma-ray is the shortest wavelength and the highest frequency It produced by the emitted from nucleus of some unstable radioactive atoms. Gamma-ray was discovered by the French chemist and physicist, Paul Ulrich Villard in 1900, when he was reviewing Uranium. The function of gamma-ray is in wide range subject such as medicine, agriculture, weaponry, and trade.

16. http://id.wikipedia.org/wiki/Sinar_gama http://annucigema.blogspot.com/2013/06/penemuan-sinar-gamma.html http://sibeloy.blogspot.com/2011/06/sinar-gamma.html http://catatankecik.blogspot.com/2012/09/gamma-ray-alat-pengawasan-ekspor.html http://www.st-andrews.ac.uk/~bds2/ltsn/ljm/JAVA/SPECTRUM/details.html http://kangtarman.blogspot.com/2013/04/gelombang-elektromagnetik.html http://pustakafisika.wordpress.com/tag/sejarah-penemuan-radiasi-gamma/ http://qwertyjuki.blogspot.com/2012/09/sinar-gamma.html http://amazing space.stsci.edu/resources/explorations/groundup/lesson/glossary/term- full.php?t=gamma_rays