THE electromagnet designed for the use of oculists by Dr. Haab, director of the Zurich eye clinic, and shown in the accompanying photographs, is the most powerful and efficient apparatus of this ...

There's also the added setback of being unable to handle a highly powerful electromagnet, but that's something that all ...

Electromagnetic strength is dependent on a variety of factors, such as the number of coils in the electrical wire that generates the power, the applied current, and the core material’s magnetic ...

This game changing rail-gun can fire a jet of molten metal, hurled through space at several hundred miles per second by the ...

This circuit has a very low power consumption, as the electromagnet is only on for about 20ms! The other major components are a LM358N op-amp, a CD4001B quad CMOS NOR gate, and IRFD-120 MOSFET.

Did you know all EVs have a traditional 12-volt battery, and without it they won't start? Learn more about this surprising EV ...

If future room-temperature superconductors end up having high critical current densities as well, you could cheaply build very strong electromagnets. Certainly, places where we use cold ...

Researchers from Madrid explain a phenomenon that allows the direction of light emission to be controlled at the atomic scale. The paper provides a detailed explanation of how the profile of the ...

Heavy equipment operators, including one using a powerful electromagnet to comb for scrap metal, work on the site of the former Maui Prince Hotel on Jan. 23 in Makena. The Makena Golf & Beach Club ...

Captain America's weapon of choice is his iconic, star-spangled shield. The Marvel hero can hurl it at a baddie and then summon it back to his arm. Now, YouTuber the Hacksmith can too. He ...

Let’s find out more about how an electromagnet works. When an electric current, like the one generated by a power pack, flows through copper wire it creates a magnetic field and we have made ...

In this activity campers coil wire around an iron nail and run current through the wire to create an electromagnet strong enough to pick up small objects such as paper clips. Electromagnets are ...