A gamma ray, also known as gamma radiation (symbol γ), is a penetrating form of electromagnetic radiation arising from high energy interactions like the radioactive decay of atomic nuclei or astronomical events like solar flares. It consists of the shortest wavelength electromagnetic waves, typically shorter than those of X-rays.

2025年1月31日 · Gamma ray, electromagnetic radiation of the shortest wavelength and highest energy. Gamma rays are produced in the disintegration of radioactive atomic nuclei and in the decay of certain subatomic particles. It includes some overlap with …

2016年8月10日 · When struck by cosmic rays, chemical elements in soils and rocks emit uniquely identifiable signatures of energy in the form of gamma rays. These data can help scientists look for geologically important elements such as hydrogen, magnesium, silicon, oxygen, iron, titanium, sodium, and calcium.

2024年5月14日 · Gamma rays or gamma radiation are a form of electromagnetic radiation with extremely high frequency and energy. They are a significant topic of study in fields such as nuclear physics, astrophysics, and medical science due to …

2022年12月28日 · Gamma rays are high-energy photons produced by some of the most violent events in the universe. We explore this powerful radiation in more detail here.

2018年11月29日 · Gamma rays are a form of electromagnetic radiation. They can be used to treat cancer, and gamma-ray bursts are studied by astronomers.

The Italian–Dutch satellite BeppoSAX, launched in April 1996, provided the first accurate positions of gamma-ray bursts, allowing follow-up observations and identification of the sources.. Several models for the origin of gamma-ray bursts postulated that the initial burst of gamma rays should be followed by afterglow: slowly fading emission at longer wavelengths created by collisions …

Gamma rays allow us to enrich our view of the universe beyond what we see in visible light. Along with other non-visible forms of light, gamma rays enable us to observe known objects in a new way, and they reveal phenomena never before seen.

Gamma rays are high frequency (or shortest wavelength) electromagnetic radiation and carry a lot of energy. They pass through most types of material. Only something hard, like a lead block or a thick concrete block, can stop their transmission.

2009年3月11日 · A new map combining nearly three months of data from NASA’s Fermi Gamma-ray Space Telescope is giving astronomers an unprecedented look at the high-energy cosmos. To Fermi’s eyes, the universe is ablaze with gamma rays from sources within the solar system to galaxies billions of light-years away.