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Mole Day originated from a celebration by educator Margaret Christoph. [5] She wrote an article about her experiences in The Science Teacher in the 1980s. [6] Inspired by this article, Maurice Oehler, a high school chemistry teacher from Prairie du Chien, Wisconsin, founded the National Mole Day Foundation (NMDF) on May 15, 1991.
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The narrator discusses the phenomenon of a giant mole in a far village, and the attempt of the village schoolmaster to bring its existence to the public attention, only to become an object of derision to the scientific community. Without knowing the schoolmaster, the narrator tries to defend him and his honesty in a paper about the giant mole.
The number of atoms in a mole, a quantity known as the Avogadro constant, is experimentally determined, and the current best estimate of its value is 6.022 140 76 × 10 23 entities per mole. [18] This new definition of the kilogram proposed to fix the Avogadro constant at precisely 6.022 14 X × 10 23 mol −1 with the kilogram being defined as ...
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Project Mohole was an attempt in the early 1960s to drill through the Earth's crust to obtain samples of the Mohorovičić discontinuity, or Moho, the boundary between the Earth's crust and mantle. [2] The project was intended to provide an earth science complement to the high-profile Space Race.
The Manned Orbiting Laboratory (MOL) was part of the United States Air Force (USAF) human spaceflight program in the 1960s. The project was developed from early USAF concepts of crewed space stations as reconnaissance satellites, and was a successor to the canceled Boeing X-20 Dyna-Soar military reconnaissance space plane.
Franconia Day or Tag der Franken ("Day of the Franconians") was created in 2006 following a decision by the Bavarian Landtag and has been celebrated annually since then on 2 July or on the weekend immediately following. It is intended to highlight the diverse landscape and history of the Franconian region and to raise awareness of Franconia's ...