Why are electromagnets used?Why does the length of current loop affect the magnetic force?Why must soft iron be used with an electromagnet?Suppose that a (small) charged conductor is connected to the ground. Explain why the conductor becomes uncharged.Why are magnetic field lines closed curves?
Specimens are cut into extremely thin sections, and the transmission electron microscope aims an electron beam through a section, just as a light microscope aims a beam of light through a specimen. However, instead of lenses made of glass, the transmission electron microscope uses electromagnets as...
Why is it important to reduce friction on compound machines? Why is a pair of scissors a compound machine? Why are electromagnets used? Why do we use glycerinated muscles? What are some advantages and disadvantages of aerobic exercise machines?
Enter, after many years of planning, the Large Hadron Collider (LHC), an experiment massive enough to potentially falsify the theory of the Higgs boson. The 17-mile loop of super-powered electromagnets can accelerate charged particles to significant fractions of the speed of light, causing collisi...
so must be suspended and bottled with ultra powerful magnetic fields. This means superconducting electromagnets, which have their own engineering challenges in large-scale, as well as a vast amounts of power needed to get the reaction going. To accommodate these needs in a system that’s scaled...
just as a light microscope aims a beam of light through a specimen.However, instead of lenses made of glass, the transmission electron microscope uses electromagnets as lenses, as do all electron microscopes.The electromagnets bend the electron beam to magnify and focus an image onto a viewing ...
Hi, I am thinking of doing my next science fair project on perpetual motion, showing what prevents it from working. I am thinking of getting a 1-2 foot...
"For steel we used electromagnets to pick up the parts," Blosser says. "That obviously wouldn't work with aluminum because it's nonferrous, so we had to go to the vacuum system." I walk around to the output end of the press, where F-150 fenders are dropping onto the conveyor belt ...
A humpback whale (Megaptera novaeangliae) pictured in Cape Cod Bay off the coast of Massachusetts in the United States. Credit: Adam Wilson "We are living through an era of rapid environmental change and biodiversity loss," Wilson adds. "Understanding the mechanisms that led to the current spati...
Why are metals good conductors of heat and electricity? What causes currents? What are the advantages and disadvantages of the Wheatstone bridge? Why is resistance highest in arterioles? Why are electromagnets used? Why does a piece of iron in a current-carrying loop increase the magnetic field ...