external application of heat
41Sterilization (microbiology) — Sterilization (or sterilisation, see spelling differences) refers to any process that effectively kills or eliminates transmissible agents (such as fungi, bacteria, viruses, spore forms, etc.) from a surface, equipment, article of food or… …
42Extractor hood — An extractor hood (U.K.) or range hood (U.S.), also known as a kitchen hood, stove hood, exhaust hood, cooker hood, extraction hood, cooking canopy, ventilation hood, extractor fan or electric chimney, is a device containing a fan that hangs… …
43HVAC — may also stand for High voltage alternating current. See also: Glossary of HVAC HVAC systems use ventilation air ducts installed throughout a building that supply conditioned air to a room through rectangular or round outlet vents, called… …
44Chinese herbology — For non Chinese traditions of herbology, see herbalism. Chinese Herbology (simplified Chinese: 中药学; traditional Chinese: 中藥學; pinyin: zhōngyào xué) is the theory of Traditional Chinese herbal therapy, which accounts for the majority of treatments …
45Joseph Black — Infobox Scientist name = Joseph Black box width = image width = 180px caption = Mezzotint engraving after Sir Henry Raeburn birth date = April 16,1728 birth place = Bordeaux, France death date = December 6,1799 death place = Edinburgh residence …
46Polyester — For the 1981 motion picture, see Polyester (film). SEM picture of a bend in a high surface area polyester fiber with a seven lobed cross section …
47electron tube — an electronic device that consists, typically, of a sealed glass bulb containing two or more electrodes: used to generate, amplify, and rectify electric oscillations and alternating currents. Also called electronic tube. Cf. gas tube, vacuum tube …
48Experimental cancer treatment — Experimental cancer treatments are medical therapies intended or claimed to treat cancer (see also tumor ) by improving on, supplementing or replacing conventional methods (surgery, chemotherapy, radiation, and immunotherapy).The entries listed… …
49Explosive material — A number of 1.25lb M112 Demolition Charges, consisting of a C 4 compound, sit atop degraded weaponry scheduled for destruction An explosive material, also called an explosive, is a reactive substance that contains a great amount of potential… …
50Insulator (electrical) — Ceramic insulator at railways Conducting copper wire insulate …
