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Gamma Ray

Gamma Ray

NASA | What Are Gamma Rays?

What we call "light" is actually just a tiny fraction of the broad range of radiation on the electromagnetic radiation spectrum. The entire span stretches from very-low-energy radio waves through microwaves, infrared light, visible light, ultraviolet light, X rays, and finally to very-high-energy gamma rays. The processes producing photons (single particles of electromagnetic radiation) of each type of radiation differ, as do their energy, but all of the different forms of radiation are still just part of the electromagnetic spectrum's family. The only real difference between a gamma-ray photon and a visible-light photon is the energy. Gamma rays can have over a billion times the energy of the type of light visible to our eyes. They are produced by the hottest and most energetic objects in the universe, such as neutron stars and pulsars, supernova explosions, and regions around black holes. On Earth, gamma rays are generated by nuclear explosions, lightning, and the less dramatic activity of radioactive decay. In fact, gamma rays are so energetic that they are harmful to life on Earth. Luckily, Earth's atmosphere absorbs gamma rays, preventing them from affecting life on the ground. But this poses a problem if you want to observe the Universe in gamma-ray light. The very atmosphere that protects us from gamma rays prevents us from directly observing them from the ground. Astronomical observations of gamma-ray sources are therefore done with high-altitude balloons or satellites, above the protective blanket of Earth's atmosphere. The high energy of gamma rays poses another problem: they can pass right through any lens or mirror, making it very difficult to focus them in a telescope. Astronomical observations, therefore, must rely on a different technology to view the gamma-ray universe. Scientists must make use of methods developed by particle physicists, who have long understood techniques for measuring high-energy particles. The Fermi Gamma-ray Space Telescope's specialized astronomical instruments employ detectors used and perfected by physicists interested in the interactions of subatomic particles. This video is public domain and can be downloaded at: http://svs.gsfc.nasa.gov/goto?10861 Like our videos? Subscribe to NASA's Goddard Shorts HD podcast: http://svs.gsfc.nasa.gov/vis/iTunes/f0004_index.html Or find NASA Goddard Space Flight Center on Facebook: http://www.facebook.com/NASA.GSFC Or find us on Twitter: http://twitter.com/NASAGoddard

Videos

Gamma Ray 'Empire Of The Undead' Song 10 'I Will Return'

Order the album now: CD+DVD: http://smarturl.it/GR_EOTU_SPEC | CD: http://smarturl.it/GR_EUTU_CD | 2Vinyl: http://smarturl.it/GR_EUTU_LP | iTunes: http://sma...

GAMMA RAY "To The Metal!" (Official Video HD)

The first single from Gamma Ray's studio album of the same title. This video, together with videos for "Rise" and "Empathy" can be found on the CD+DVD limite...

Gamma Ray "Master Of Confusion" Official Rehearsal Lyric Video (HD)

Order here (Germany): Amazon: http://amzn.to/TJLCLl UK: iTunes https://itunes.apple.com/gb/album/master-of-confusion/id606860170 Amazon MP3 http://www.amazon...

Beck - Gamma Ray

Beck - Gamma Ray- Modern Guilt-2008 Check out all my videos :)

GAMMA RAY - Dethrone Tyranny / 9. 2011 [HD] *Berlin Live*

Gamma Ray with " dethrone tyranny " ( induction intro) Live - "Berlin Live" September 18, 2011 - Germany - Berlin , Trafo Kai Hansen - voc., guit. Dirk Schla...

Gamma Ray 'Empire Of The Undead' Song 9 'Seven'

Order the album now: CD+DVD: http://smarturl.it/GR_EOTU_SPEC | CD: http://smarturl.it/GR_EUTU_CD | 2Vinyl: http://smarturl.it/GR_EUTU_LP | iTunes: http://sma...

Gamma Ray - Follow Me (Subtítulos en Español)

Gamma Ray - Live Gates Of Metal (2003)

Band name: Gamma Ray Date: 2 August 2003 Location: Hultsfred, Sweden Event: Gates of Metal Festival Track listing: 1. Gardens of the Sinner 2. Rich and Famou...

Gamma Ray - Send me a sign (lyrics)

Send me a sign song by Gamma Ray.