Gamma rays are a form of electromagnetic radiation, just like visible light or x rays, but with a much higher energy. The gamma ray spectrum is usually defined as light having a frequency between 1018 and 1021 Hertz. Gamma rays are more energetic than...

Gamma decay is one of the three radioactive decay modes available to atomic nuclei, along with alpha and beta decay. In alpha and beta decay, the atomic number of the nucleus changes, but in gamma decay the atomic number does not change. In gamma...

By 1900, it had become apparent that nuclear radiation consisted of at least two parts, alpha rays and beta rays. These two types of rays were bent in opposite directions by a magnetic field and had, therefore, to consist of charged particles. The two...

Gamma rays are a kind of electromagnetic radiation, or light energy. Just as visible light, infrared waves, microwaves, radio waves, ultraviolet rays, and x rays are forms of electromagnetic radiation, so too are gamma rays. Gamma rays are highly...

Gamma rays (denoted as γ) are a form of electromagnetic radiation or light emission of frequencies produced by sub-atomic particle interactions, such as electron-positron annihilation or radioactive decay. Gamma rays are generally characterized as...

It's the stuff of Tom Clancy thrillers that has recently become a deadly serious matter: Agents intercept a shipment of radioactive material destined for international terrorists. The U.S. government accuses a certain country of providing the material-a claim that the country in question denies....

Astronomers are examining data from the Beppo-SAX satellite, launched in 1996 with a gamma ray detector attached, and are trying to determine if gamma ray bursts occur within this galaxy or are more distant events. The opinion now is that they are distant events...

A new NASA space telescope will give scientists a peek at some of the most energetic objects and events in the universe. The new Gamma-ray Large Area Space Telescope to be launched next spring doesn't see visible light like our eyes, but gamma rays, the...

The Army, faced with thousands of cases of brain injury from the Iraq war, will soon begin testing brain scanning equipment in hopes of finding a more accurate way to identify hard-to-diagnose wounds.Fort Carson hopes to get a new scanning camera in two weeks that...