Search results
Results from the WOW.Com Content Network
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.
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.
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.
"Dynamo Electric Machine" (end view, partly section, U.S. patent 284,110) A dynamo is an electrical generator that creates direct current using a commutator.Dynamos were the first electrical generators capable of delivering power for industry, and the foundation upon which many other later electric-power conversion devices were based, including the electric motor, the alternating-current ...
Three-brush dynamo charging circuit A third-brush dynamo was a type of dynamo , an electrical generator , formerly used for battery charging on motor vehicles . It was superseded, first by a two-brush dynamo equipped with an external voltage regulator , and later by an alternator .
It is also known as a unipolar generator, acyclic generator, disk dynamo, or Faraday disc. The voltage is typically low, on the order of a few volts in the case of small demonstration models, but large research generators can produce hundreds of volts, and some systems have multiple generators in series to produce an even larger voltage. [ 1 ]
The 10 to 1 ratio was an estimate made in 1972; current estimates put the ratio at either 3 to 1 or 1.3 to 1. [300] The total length of capillaries in the human body is not 100,000 km. That figure comes from a 1929 book by August Krogh, who used an unrealistically large model person and an inaccurately high density of capillaries.
Because Pig goofed off instead of preparing for a picnic, he forgot his lunch at home. The Super Readers then jump into the Ant and the Grasshopper book, where they help Grasshopper in getting ready for winter.