Very penetrating rays not appreciably deflected by a magnetic or electric field, emitted by radioactive substances. The prevailing view is that they are non-periodic ether pulses differing from Rontgen rays only in being more penetrating.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). gamma rays. Retrieved September 20, 2026, from http://smartdefine.org/gamma_rays/definitions/2011236 |
| Chicago | Webster's. 2011. "gamma rays" http://smartdefine.org/gamma_rays/definitions/2011236 (accessed September 20, 2026). |
| Harvard | Webster's 2011, gamma rays, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/gamma_rays/definitions/2011236>. |
| MLA | Webster's. "gamma rays" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/gamma_rays/definitions/2011236> |