burst of ionization
31Upper-atmospheric lightning — is an obsolete term that is no longer used by researchers to refer to a family of electrical breakdown phenomena that occurs well above the altitudes of normal lightning. Current usage favors Transient Luminous Event (TLE) to refer to one of the… …
32Cygnus X-1 — For other uses, see Cygnus X 1 (disambiguation). HDE 226868 HDE 226868 (not shown) is located next to the star η (lower center) in this map of constellation Cygnus …
332-meter band — The 2 meter amateur radio band is a portion of the VHF radio spectrum, comprising frequencies stretching from 144.000 MHz to 148.000 MHz in ITU Regions 2 (North South America plus Hawaii) and 3 (Asia and Oceania) [US Amateur Radio Frequency… …
34Helium mass spectrometer — A helium mass spectrometer is an instrument commonly used to detect and locate small leaks. It was initially developed in the Manhattan Project during World War II to find extremely small leaks in the gas diffusion process of uranium enrichment… …
35K — 1. Symbol for potassium; kalium; phylloquinone; kelvin; lysine; lysyl. 2. In optics, the coefficient of scleral rigidity. 3. In contact …
36k — Symbol for kilo . Symbol for rate constants, under constant or velocity constants, under constant; Boltzmann constant. * * * absolute zero; a burst of diphasic slow waves in response to stimuli during sleep [in electroencephalography]; capsular… …
37Eta Carinae — Starbox begin name=Eta CarinaeStarbox image caption=Hubble Space Telescope image showing Eta Carinae and the bipolar Homunculus Nebula which surrounds the star. The Homunculus was partly created in an eruption of Eta Carinae whose light reached… …
38Mars 96 — Model of the Mars 96 Orbiter Operator Russian Space Forces Mis …
39Louis Slotin — Infobox Person name = Louis Slotin imagesize = caption = Slotin s Los Alamos badge photo birth date = birth date|1910|12|1|df=y birth place = North End, Winnipeg, Manitoba, Canada death date = death date and age|1946|5|30|1910|12|1|df=y death… …
40SGR 1806-20 — Starbox begin name=SGR 1806 20Starbox image caption = This is where SGR 1806 20 would appear in the sky if it were visible to human eyes. Starbox observe epoch=J2000 ra=18h 08m 39.32s dec= 20° 24 39.5 appmag v= totally obscured… …
