Electro magnets Electromagnets are created by running an electrical current through a conductive metal. An electrical current causes the rapid movement of electrons, which creates a magnetic field. Electromagnetic fields can be created by running an electrical current through any metal, including non-fer...
Why do like charges and poles repel, unlike charges and poles attract? What cause the magnetism? Why does a magnetic compass needle not work in submarines? How does the magnet attract something that is originally non magnetic? What causes the magnetic field of the earth? Why do the m...
Why are electromagnets used? Why are sickle cells and platelets important? Why are lateral roots endogenous? Why is methane a greenhouse gas? Why don't polar molecules diffuse? Why is oxygen not a greenhouse gas? Why is the cochlea filled with fluid?
Superconducting materials expel magnetic fields from inside themselves, which makes thempowerful electromagnets. These super-magnets have the potential tolevitate trains. Superconducting electromagnets generate 8.3 tesla magnetic fields—more than 100,000 times the Earth’s magnetic field. The electromagnets u...
Question: Why isn't laser technology used for root canals? Laser; Lasers are classified into atomic gas lasers, molecular gas lasers, and ion gas lasers. When electrons in glass or crystal atoms absorb the energy from light or electrical current, a laser is created. ...
Why are electromagnets used? Why doesnt refraction happen at a curved surface? Why can't solids be compressed? Why metals are opaque. Why do photoreceptors respond to the logarithm of luminance? Why are crystalline solids brittle? Why are transition metal compounds often used in paint pigments?
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 screen or photographic film.Electron microscopes have truly revolutionized...
How does a wig wag work? The Magnetic Flagman wigwag waves itstarget using large, black electromagnets pulling against an iron armature. Sliding contacts switch the current from one magnet to the other. Each Magnetic Flagman includes a builder's plate (bottom center) detailing patent dates and...
How Hydraulic Machines Work How Electromagnets Work How Magnets Work How Car Engines Work How Electric Motors Work More Great Links Al-Jon BBC Business Week EPA Institute of Scrap Recycling Industries, Inc. Sources Al-Jon. "Al-Jon 580 CL Car Logger." http://www.aljon.com/wp-content/uploads...
How Do Judges Evaluate Science Fair Projects on Electromagnets? Feb 3, 2010 Replies 2 Views 1K I need an engineering project for my Science Fair Jan 19, 2016 Replies 5 Views 2K Finding the force of a magnetic field using an air core solenoid Feb 24, 2012 Replies 1 Views 3K ...