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Search results 6981 - 6990 of 8016 matching essays
- 6981: Alchemy
- ... success of the operation. The process for the manufacture of silver is essentially similar, but the resources of the matter are not carried to so high a degree. "According to the "Commentary on the Ancient War of the Knights" the transmutations performed by the perfect stone are so absolute that no trace remains of the original metal. It cannot, however, destroy gold, nor exalt it into a more perfect metallic substance ...
- 6982: Atomic Structure
- ... repelled one another electrically. The Japanese physicist Hideki Yukawa proposed that a particle named the pion transmitted a strong nuclear force much as the photon transmitted the electromagnetic force. Pions were found shortly after World War II by the British physicist Cecil F. Powell. Molecules are combinations of atoms. Atoms consist of electrons bound to a tiny nucleus by the electromagnetic force. If one atom is put near another, the electromagnetic ...
- 6983: Creationism and Darwinism
- ... Trial" makes headlines in July as Dayton, Tenn., schoolteacher John T. Scopes, 25, goes on trial for violating a March 13 law against teaching evolution in the states public schools. Backed by the American Civil Liberties Union, Scopes has tested the law by acquainting his classes with the 1859 teachings of Charles Darwin. Defended by Chicago attorneys Clarence Darrow and Dudley Field Malone, he is prosecuted by former secretary of ...
- 6984: Plate Tectonics
- ... regenerated. Convection currents beneath the plates move the crustal plates in different directions. The source of heat driving the convection currents is radioactivity deep in the Earths mantle. Advances in sonic depth recording during World War II and the subsequent development of the nuclear resonance type magnometer (proton-precession magnometer) led to detailed mapping of the ocean floor and with it came many observation that led scientists like Howard Hess and ...
- 6985: Diffraction And The Debye-Scherrer Camera
- ... straining. So we see that humankind has made great use of light and diffraction. Instruments employing the phenomenon of diffraction are crucial to the area of materials science and other off-shoot disciplines such as civil engineering. However the fundamental concepts are simple harmonic and the superposition principle. Without these, non of this would be possible. Intro
- 6986: Are UFOs Real?
- ... religious enthusiasm, arose into a universal climate of confidence from a broad, general need. With the fall of the towering father-image, Roosevelt the devastating inauguration of the nuclear era, and the end of World War II, the time for something from another world needed to emerge. When modern flying saucers came into being in 1947, there was a ready-made tradition that was already waiting for them. A writer by ...
- 6987: A Study of B.F. Skinner and Behaviorism
- ... his Ph.D. in behavioral psychology at Harvard in 1931. In 1936, he then worked as part of the faculty at the University of Minnesota. A few years later in 1939 to 1945, during World War II, he designed the "baby box" or better known to psychologist as the "Skinner box". It was a controlled environmental chamber for infants and he was even disturbed enough to allow his daughter Deborah to ...
- 6988: Compressed Gas: Helium
- ... per cent helium. This primary discovery of helium in natural gas is credited to Professors H.P. Cady and D. F. McFarland of the university of Kansas. Helium was first used in balloons during World War I. For a few years, beginning in 1927, a privately owned commercial plant at Dexter supplied gas for Navy dirigibles. Later valuable uses developed in industry. In the 1950's demand soared when helium became ...
- 6989: The Entertainment Universe
- ... evaluations were made, the victim was simply given a funeral and the matter was dropped. The account above was able to occur because it took place in a universe completely apart from that of the civil universe - the entertainment universe. In the entertainment universe their is practically no law and no limitation. Anything and everything goes. Rape, murder, graphic torture scenes, child molestation, all this and more are a common theme ...
- 6990: The Physics Of Scuba Diving: Swimming with the Fish
- ... diving. This apparatus was designated scuba (for self- contained underwater breathing apparatus) by its users. Equivalent self- contained apparatus was used by the military forces of Italy, the United States, and Great Britain during World War II and continues in active use today. (Ketels, 12). A major development in regard to mobility in diving occurred in France during the 1930's: Commander de Carlieu developed a set of swim fins, the ...
Search results 6981 - 6990 of 8016 matching essays
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