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Isaac Barrow. Succeeded by. William Whiston. Signature. Sir Isaac Newton FRS (25 December 1642 – 20 March 1726/27 [a]) was an English polymath active as a mathematician, physicist, astronomer, alchemist, theologian, and author who was described in his time as a natural philosopher. [7] He was a key figure in the Scientific Revolution and the ...
Newton's laws of motion are three physical laws that describe the relationship between the motion of an object and the forces acting on it. These laws, which provide the basis for Newtonian mechanics, can be paraphrased as follows: A body remains at rest, or in motion at a constant speed in a straight line, except insofar as it is acted upon by ...
Methamphetamine (METH) is a potent amphetamine-type stimulant that has high abuse potential and can be smoked, snorted, injected, or taken orally. The drug is high in lipid solubility and can cross the blood-brain barrier more readily than amphetamine due to the addition of an extra methyl group.
Uranium is a chemical element; it has symbol U and atomic number 92. It is a silvery-grey metal in the actinide series of the periodic table. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons. Uranium radioactively decays, usually by emitting an alpha particle.
September 18, 2024 at 12:04 PM. (Reuters) - Boeing (BA) CEO Kelly Ortberg said Wednesday the planemaker will temporarily furlough numerous U.S. executives and other employees after about 30,000 ...
Asbestos (/ æ s ˈ b ɛ s t ə s, æ z-,-t ɒ s / ass-BES-təs, az-, -toss) [1] is a naturally occurring fibrous silicate mineral.There are six types, all of which are composed of long and thin fibrous crystals, each fibre (particulate with length substantially greater than width) [2] being composed of many microscopic "fibrils" that can be released into the atmosphere by abrasion and ...
A perchlorate is a chemical compound containing the perchlorate ion, ClO − 4, the conjugate base of perchloric acid (ionic perchlorate). As counterions, there can be metal cations, quaternary ammonium cations or other ions, for example, nitronium cation (NO + 2). The term perchlorate can also describe perchlorate esters or covalent ...
In the Rich Text Format specification, language code 4 is for the Chinese language. Codes for regional variants of Chinese are congruent to 4 mod 256. Credit card machines have four-twelve function keys. On most phones, the 4 key is associated with the letters G, H, and I, [84] but on the BlackBerry Pearl, it is the key for D and F.