radiant section tubes
41Wilhelm Reich — Born March 24, 1897(1897 03 24) Dobzau, Kingdom of Galicia and Lodomeria (present day Dobrzanica, Ukraine) …
42High voltage — The term high voltage characterizes electrical circuits, in which the voltage used is the cause of particular safety concerns and insulation requirements. High voltage is used in electrical power distribution, in cathode ray tubes, to generate X… …
43Julius Jeffreys — (1800 1877) was a British surgeon, writer, inventor of the respirator, and was a pioneer in the development of early air conditioning systems.Early lifeJulius Jeffreys was born on September 14th, 1800 at Hall Place, Bexley, Kent, England, where… …
44chemistry — /kem euh stree/, n., pl. chemistries. 1. the science that deals with the composition and properties of substances and various elementary forms of matter. Cf. element (def. 2). 2. chemical properties, reactions, phenomena, etc.: the chemistry of… …
45horticulture — horticultural, adj. horticulturist, n. /hawr ti kul cheuhr/, n. 1. the cultivation of a garden, orchard, or nursery; the cultivation of flowers, fruits, vegetables, or ornamental plants. 2. the science and art of cultivating such plants. [1670… …
