residual ray
21Crookes tube — A Crookes tube. The electrons travel in straight lines from the cathode on the left, shown by the shadow cast by the cross on the fluorescence on the righthand wall. The anode is at the bottom. A Crookes tube is an early experimental electrical… …
22nuclear weapon — an explosive device whose destructive potential derives from the release of energy that accompanies the splitting or combining of atomic nuclei. [1945 50] * * * or atomic weapon or thermonuclear weapon Bomb or other warhead that derives its force …
23sugar — sugarless, adj. sugarlike, adj. /shoog euhr/, n. 1. a sweet, crystalline substance, C12H22O11, obtained chiefly from the juice of the sugarcane and the sugar beet, and present in sorghum, maple sap, etc.: used extensively as an ingredient and… …
24Géologie de la planète Mars — La géologie de la planète Mars, parfois appelée aréologie[1], recouvre l étude scientifique de Mars et de ses propriétés physiques, de ses reliefs, de sa composition, de son histoire, et de tous les phénomènes qui ont affecté ou affectent encore… …
25photoreception — photoreceptive, adj. /foh toh ri sep sheuhn/, n. the physiological perception of light. [1905 10; PHOTO + RECEPTION] * * * Biological responses to stimulation by light, most often referring to the mechanism of vision. In one celled organisms such …
26Radiation hardening — is a method of designing and testing electronic components and systems to make them resistant to damage or malfunctions caused by ionizing radiation (particle radiation and high energy electromagnetic radiation),[1] such as would be encountered… …
27Food irradiation — The Radura logo, used to show a food has been treated with ionizing radiation. Food irradiation is the process of exposing food to ionizing radiation[1] to destroy microorganisms, bacteria, viruses, or ins …
28Antenna (radio) — Whip antenna on car …
29DTS-HD Master Audio — logo DTS HD Master Audio is a lossless audio codec created by Digital Theater System. It was previously known as DTS++.[1] It is an extension of DTS which, when played back on devices which do not support the Master Audio or High …
30particle accelerator — accelerator (def. 7). [1945 50] * * * Device that accelerates a beam of fast moving, electrically charged atoms (ions) or subatomic particles. Accelerators are used to study the structure of atomic nuclei (see atom) and the nature of subatomic… …
