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Excelsior, or wood wool. Wood wool, known primarily as excelsior in North America, is a product made of wood slivers cut from logs. It is mainly used in packaging, for cooling pads in home evaporative cooling systems known as swamp coolers, for erosion control mats, and as a raw material for the production of other products such as bonded wood wool boards.
The grasshopper is copper gilded with gold leaf with glass eyes. The vane fell off the building during the earthquake of 1755 which shook Boston. He and his son Thomas repaired it and remounted it. In 1768 Thomas placed a note labeled "food for the grasshopper" in the belly of the grasshopper. It read: Shem Drowne made it, May 25, 1742.
1757: First sextant made by John Bird (1709–1776), [230] adapting the principle of Hadley's octant. 1785: The lifeboat invented and patented by Lionel Lukin (1742–1834); William Wouldhave (1751–1821) made a rival claim, but he did not succeed with the practical application of his invention until 1789.
It was once believed that the dipole, which comprises much of the Earth's magnetic field and is misaligned along the rotation axis by 11.3 degrees, was caused by permanent magnetization of the materials in the earth. This means that dynamo theory was originally used to explain the Sun's magnetic field in its relationship with that of the Earth.
In 2011 Dynamo [11] was released in beta form allowing first glimpses of directly programming the behavior of hosted components through a drag and drop node interface. This is similar to the way the visual programming language Grasshopper 3d works on objects in Rhinoceros 3D. [12] In 2012 [13] Revit LT [14] became the newest version of Revit on ...
The first model, called the Grasshopper, was used at Värnamo Hospital in 1931. [ 3 ] Edgar Kaufmann Jr. , director of the Industrial Design Department at the Museum of Modern Art (MOMA), collected Mathsson's chairs and included them in several exhibitions in the 1940s. [ 4 ]
Thomas Parker FRSE MICE (22 December 1843 – 5 December 1915) was an English electrical engineer, inventor and industrialist. He patented improvements in lead-acid batteries and dynamos, and was a pioneer of manufacturing equipment that powered electric tramways and electric lighting. He invented the smokeless fuel Coalite. He formed the first ...
Global distillation or the Grasshopper effect is the geochemical process by which certain chemicals, most notably persistent organic pollutants (POPs), are vaporized and transported from warmer to colder regions of the Earth, particularly the poles and mountain tops, where they condense.