In a magnetic field, a compass needle always points in the direction of ___. A. the north pole of the magnet B. the south pole of the magnet C. east D. west 相关知识点: 试题来源: 解析 A。指南针在磁场中总是指向磁体的北极。选项 B 是磁体的南极,指南针指向的是北极;选项 C 和 D ...
of a of the riesen magnet resistance element (r1, r2, r3, r4) detected change of the magnetic field; and– a on the input side of the integrated circuit (23) provided in the protective resistor (r5) and a on the output side of the integrated circuit (23) provided in the protective ...
Orientation to the Earth's magnetic field has been shown for bacteria, planarians, molluscs, insects, elasmobranch fish, salamanders and birds1,2. Recent work indicates that humans may also have a magnetic sense of direction3,4. We present here the first evidence for such a sense in a mamma...
This paper presents a new method which can not only measure the magnitude but also the direction of the magnetic field. A structure with a cantilever driven in different modes is used. The magnetic field direction and magnitude are detected by measuring the vibration amplitudes of the different ...
The magnetization direction in which the magnetic field becomes the strongest on one axis is derived by the spherical coordinate system. It was found that the magnetic field was strongest at the top and bottom on the axis, and was weakest at the 0 points on the axis. Therefore, it is indi...
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) ...
in our article,The Earth Is a Magnet.) Diametrically magnetized magnets will tend to wobble, as if the magnet weren't perfectly round. What you're actually seeing is the magnet's tendency to align with the earth's magnetic field. Axially magnetized magnets won't show this sort of wobble....
A stationary bias magnet is disposed adjacent the magnetoresistive device for supplying a bias flux at a predetermined angle relative to a main current conducting path.< P> In one application of this apparatus, the magnetic field is supplied from, for example, a magnet, such as a rotary ...
THE determination of the direction of the resultant force, at any point, due to a long, thin magnet, is of some importance as a laboratory exercise, and it is necessary to be able to compare the direction which a small needle takes up in its field with the theoretical direction. For ...
Magnets should be stored in a dry and constant temperature environment as far as possible. How to achieve magnetic isolation? Only the material that can be adsorbed on the magnet can play the role of isolating the magnetic field, and the thicker the material, the better the magnetic isolation...