microwaves
31Coaxial cable — RG 59 flexible coaxial cable composed of: A: outer plastic sheath B: woven copper shield C: inner dielectric insulator D: copper core Coaxial cable, or coax, has an inner conductor surrounded by a flexible, tubular insulating layer, surrounded by …
32Doppler radar — Doppler effect A Doppler radar is a specialized radar that makes use of the Doppler effect to produce velocity data about objects at a distance. It does this by beaming a microwave signal towards a desired target and listening for its reflection …
33History of the telescope — The earliest known working telescopes appeared in 1608 and are credited to Hans Lippershey and Zacharias Janssen, spectacle makers in Middelburg, and Jacob Metius of Alkmaar. The design of these early refracting telescopes consisted of a convex… …
34Rocket engine — RS 68 being tested at NASA s Stennis Space Center. The nearly transparent exhaust is due to this engine s exhaust being mostly superheated steam (water vapor from its propellants, hydrogen and oxygen) …
35Dielectric heating — A microwave oven, which uses dielectric heating to cook food Dielectric heating, also known as electronic heating, RF heating, high frequency heating and diathermy, is the process in which a high frequency alternating electric field, or radio… …
36Electron paramagnetic resonance — (EPR) or electron spin resonance (ESR) spectroscopy is a technique for studying chemical species that have one or more unpaired electrons, such as organic and inorganic free radicals or inorganic complexes possessing a transition metal ion. The… …
37Imad Rahman — Infobox Writer name = Imad Rahman imagesize = 200px caption = pseudonym = birthdate = birthplace = Karachi, Pakistan deathdate = deathplace = occupation = Writer Professor nationality = Pakistani American period = genre = Fiction subject =… …
38Hans Hollmann — Hans Erich (Eric) Hollmann (4 November, 1899 19 November 1960) was a German electronic specialist who made several breakthroughs in the development of radar.Hollmann was born in Solingen, Germany. He became interested in radio and even as a… …
39Non-thermal microwave effect — Non thermal microwave effects have been posited in order to explain unusual observations in microwave chemistry. As the name suggests, the effects are supposed not to require the transfer of microwave energy into thermal energy. Instead, the… …
40Convection microwave — A convection microwave is a combination of a standard microwave oven and a convection oven. It allows food cooked in the convection microwave to be cooked quickly, yet come out browned or crisped as in a convection oven. For example, a convection …
