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Insignia and badges of the United States Marine Corps are military "badges" issued by the United States Department of the Navy to Marines who achieve certain qualifications and accomplishments while serving on both active and reserve duty in the United States Marine Corps . As described in Chapters 4 and 5 of Marine Corps Uniform Regulations ...
The main types are: Drug-drug interaction. This is when a medication reacts with one or more other drugs. For example, taking a cough medicine ( antitussive) and a drug to help you sleep (sedative ...
Clever Hans (German: der Kluge Hans; c. 1895 – c. 1916) was a horse that was claimed to have performed arithmetic and other intellectual tasks. After a formal investigation in 1907, psychologist Oskar Pfungst demonstrated that the horse was not actually performing these mental tasks, but was watching the reactions of his trainer.
The Air Education and Training Instructor Badge is a military badge of the United States Air Force which denotes a service member's status as an instructor assigned to the Air Education and Training Command. The Air Education and Training Instructor Badge is the Air Force equivalent to the U.S. Army's Drill Sergeant Identification Badge.
A mathematical symbol is a figure or a combination of figures that is used to represent a mathematical object, an action on mathematical objects, a relation between mathematical objects, or for structuring the other symbols that occur in a formula. As formulas are entirely constituted with symbols of various types, many symbols are needed for ...
ln (r) is the standard natural logarithm of the real number r. Arg (z) is the principal value of the arg function; its value is restricted to (−π, π]. It can be computed using Arg (x + iy) = atan2 (y, x). Log (z) is the principal value of the complex logarithm function and has imaginary part in the range (−π, π].
Rencontre dans la porte tournante by Man Ray, 1922, with helix. Four-dimensional geometry in Painting 2006-7 by Tony Robbin. Quintrino by Bathsheba Grossman, 2007, a sculpture with dodecahedral symmetry. Heart by Hamid Naderi Yeganeh, 2014, using a family of trigonometric equations [2]