An account of a large Electro-Magnet, made for the Laboratory of Yale CollegeHenry, JosephTen Eyck, Philip
An electromagnet generates a magnetic field, concentrated between adjustable pole-pieces. At very high speeds, electrons need powerful magnets to focus them; hence the large lenses and also a relatively long optical path (making the microscope so big). The lenses, with their coils and iron ...
An electromagnet, unlike a permanent magnet, produces a magnetic field because of the direction of the electric current and has single polarity (positive/negative). EFA is inspired by the forces of attraction/repulsion acting between electromagnets of different polarities. In EFA, each solution ...
At low temperatures, the resistance of the electromagnet drops and can be made to vanish if the normal metal is replaced with a superconductor. As a result, the energy per bit depends only on the modulation current and the inductance of the device. For our gold electrode, the resistance goes...
The device comprises two fixed contacts (5, 5a), a movable assembly (17; 18, 19, 21, 24) coupled to the central portion of a movable contact (22) the free ends (40) of which can cooperate with the said fixed contacts (5a), and a control electromagnet (3) comprising a solenoid (...
Once a head arrives at a certain location on a platter, an electromagnet produces a magnetic field, which aligns data-carrying domains in the underlying track. Each domain can be aligned in one of two possible directions — 1 or 0. As these alignments change, they form patterns that ...
Disconnect the battery when done with the experiment or if the battery or bolt get hot. Take it Further: Test the Strength of the Electromagnet Test the strength of your electromagnet by counting the number of paper clips or safety pins it can pick up. How many were too many?
An electromagnet is a current-induced magnet with an electrical current circulating around some magnetizable material, such as an iron rod. The current and number of times the current circulates around determine the magnetic strength.
To increase the strength of an electromagnet, you can increase the strength current, and there are several ways to do that. You can also increase the number of windings, lower the ambient temperature or replace your non-magnetic core with a ferro-magnetic material.It...
In general, to write is simply to use an electromagnet moving relative to the recording tape or disc. After recording (writing), to read is to move the tape or disc that has already been stored with information. This moving tape or disc will give rise to varying magnetic flux, which will...