ángstroms)
71sun — sunlike, adj. /sun/, n., v., sunned, sunning. n. 1. (often cap.) the star that is the central body of the solar system, around which the planets revolve and from which they receive light and heat: its mean distance from the earth is about 93… …
72ultraviolet astronomy — Study of astronomical objects and phenomena by observing the ultraviolet radiation (UV radiation) they emit. It has yielded much information about chemical abundances and processes in interstellar matter, the Sun, and other stellar objects, such… …
73gold processing — Introduction preparation of the ore for use in various products. For thousands of years the word gold has connoted something of beauty or value. These images are derived from two properties of gold, its colour and its chemical stability.… …
74industrial glass — Introduction solid material that is normally lustrous and transparent in appearance and that shows great durability under exposure to the natural elements. These three properties lustre, transparency, and durability make glass a favoured… …
75Minnaert, Marcel Gilles Jozef — ▪ Belgian astronomer born Feb. 12, 1893, Bruges died Oct. 26, 1970, Utrecht, Neth. Flemish astronomer and solar physicist who pioneered in solar spectrophotometry and showed how such a technique could reveal much about the structure of the… …
76silver processing — Introduction preparation of the ore for use in various products. Silver has long been valued for its white metallic lustre, its ability to be readily worked, and its resistance to the corrosive effects of moisture and oxygen. The… …
77Some Properties of the Zinc Group Elements, Table — ▪ Table zinc cadmium mercury Atomic number 30 48 80 Atomic weight 65.37 112.41 200.61 Melting point (degrees Celsius) 419.57 321 38.8 Boiling point (degrees Celsius) 907 767 357 Density, solid (grams per cubic centimetre) 7.14 (20 degrees… …
78Clearcreekite — General Category Carbonate mineral Chemical formula Hg1+3CO3(OH)∙2H2O Strunz classification 05.DC.30 …
79Bacterial phyla — …
80Nanoarchitectures for lithium-ion batteries — Efforts in lithium ion batteries research have been to improve two distinct characteristics: capacity and rate. The capacity of the battery to store energy can be improved through the ability to insert/extract more lithium ions from the electrode …
