magnetic force(iv)The shape of the Earth's magnetic field is as though there were a bar magnet at the centre of the Earth, aligned approximately on the North-South axis.If the plane flies west to east, but above the equator, the wing tips do not become charged.Explain why.(Magnetic) ...
The invention relates to a process for determining the direction of the earth's magnetic field, which may be subject to interference from magnetic materials in the device and electric currents in the device, by means of an electronic magnetic compass containing three magnetic field sensors and two...
The discovery that Earth's inner core rotates independently of and more quickly than Earth's outer layers is responsible for advancing studies of the flow of heat from the inner through the outer planet and of the formation and periodic reversal in direction of Earth's magnetic field. 选项: ...
The method determines the direction of the earth's magnetic field in the vicinity of a magnetic interference source with a varying magnetic field direction using at least two magnetic field measuring devices. The latter are positioned at a defined position relative to one another and to the ...
aWaste hundreds of hospital beds. [translate] aproduct sets 产品集 [translate] aStrange things happen to time when you travel, because the earth is divided into twenty-four parts, ___ a part. 奇怪的事发生在时候,当您旅行,因为地球被划分成二十四份, ___ part。 [translate] aCould you pleas...
The pigeons still find their way home.So it seems that pigeons also have some extra sense of direction from the earth’s magnetic field when they cannot see the sun.11.Pigeons have been used as messengers,for they have special ability ___.A.to send letters B.to find homeC.to carry...
Geomagnetism, the study and use of the magnetic field of the Earth, is one of the oldest branches of science and can be said to have begun with the discovery that a piece of lodestone (a naturally occurring, and usually naturally magneti... DR Barraclough - Springer US 被引量: 13发表...
When the apparatus is installed on an airplane, it may be conveniently used for steering in a constant direction-relatively to the horizontal component of the earth's magnetic field-by ob:;j serving, for instance, the pointer of said instrument; when the airplane is off direction, the directi...
百度试题 结果1 题目The direction of prevailing winds in the Northern hemisphere is caused by the().Magnetic field at the North Pole Gulf Stream Earth's rotation Arctic cold front 相关知识点: 试题来源: 解析 C 反馈 收藏
The secular variation of the geomagnetic field denotes the gradual change with time of the Earth's magnetic field, measured on a timescale of months to thousands of years. Among the longest records...doi:10.1007/0-387-30752-4_70C. E. Barton...