the electron microscope makes use of the   blank    naure of electroms?
930628
I think they're looking for "wave" too.\n\nBut the answer could also be "charged."  The electron beam is focused using magnets;  this can be done because a moving charged particle has a magnetic field, and thus can be manipulated by external magnetic fields.
852540
Well most plasmoids are charged, since they are ionic in nature, allowing for fairly easy control via electromagnetic fields.\n\nEasiest practical example is a plasma torch (also called a plasma cutter) used in the steel industry. A VERY powerful electric arc is created at the front end of a nozzle through which a very powerful jet of air runs. The high energy turns the air into plasma which can then be used to cut through solid steel like a knife through butter
402683
Electro-magnets use electricity to temporarily align all of the atoms in a ferrous material to a N-S position. When the electricity is turned off, the atoms return to their original misaligned state, losing much of its magnetivity. It never completely loses all of it, as some atoms will remain in the alligned state, creating a "Gauss" feild around it.
896181
electron microscopes can get pretty close to atomic scale, but to measure atoms and electrons fully you need a partical accelerator such as those at Stamford University or CERN in Switzerland. These fire atoms at each other, forcing them to break apart and measure the component parts.\n\nHowever, these cost millions of dollars to set up and are not known to have model or serial numbers!
698625
Maybe because it is depicting Current flow NOT Electron flow??
1039351
well u might hav seen enough picts/diagrams showing such field lines.\n\ntry this experiment.\nplace a barmagnet under a cardboard/examboard etc. then throw some iron fillings on the board. U will c that a pattern exactly like the one shown in diagrams is obtained.\n\ni guess this little 'experimental' proof satisfies u.
788768
Just the usual stuff.  Use an electrolyte (H2SO4/HNO3), a couple of electrodes, a reduction table of half cell potentials, and some electricity.
387857
An electronic instrument that produces an instantaneous trace on the screen of a cathode-ray tube corresponding to oscillations of voltage and current.
705574
1) *more info?\n2) microscopy\n3) electron
1175973
You asked several questions.  My answer applies to the generation of "free electrons".\n   If you can, picture the structure of an electronic vacuum tube, the invention of which (the triode, at least) is attributed to Lee Deforest. Thomas Edison worked on  similar devices.\n1) A material (such as Thorium) is electrically heated to a temperature such that electrons are "boiled off" and are electrostatically attracted to a positively (voltage) charged "plate" in a vacuum.  This flow of free electrons is a current (amperes).\n2) These electrons are NOT recycled.  The Thorium gradually deteriorates - is worn out.  \n3)  In a similar manner, this may be a source of electrons in the devices you mention.
1085489
Metal objects such as the spoon & the pointed ends of the fork act to concentrate the electric field formed at the tips. This has the effect of exceeding the dielectric breakdown gradient of air, about 3 megavolts per meter (3×106V/m), causing sparks to form. This effect is somewhat analogous to the effect of St. Elmo's fire.\nMetal or conductive object placed into the microwave will act as an antenna, and its electrons will thus be thrashed back and forth through the object (a high frequency alternating current) causing some ohmic heating to occur\n\n- no damage to magnetron, but !
624972
Surface static electricity is formed on insulating substances because you can by friction rub electrons onto or off of a surface.  In metals, electrons are shared between every atom in an electron 'sea' as opposed to the localised bonding in insulators.  Therefore in metals, any electrons deposited on or removed from a surface simply migrate/diffuse into the metal and remake the balance that existed initially.
433870
make and working elctric circuit like a bell, r a bulb, u can Also explain working of an electromagnet using a model.\nu can also expain the capillarity concept
721799
I'm just adding on to icarus62. If an electron\nbehaved totally as a particle, then the resulting pattern\nbehind a shield with 2 slits should look like it would\nif the shield were made of steel and the 2 slits each\nallowed bullets to go thru and a machine gun were fired\nat the slits. But it doesn't. It looks like a pattern \nresulting from a radio wave that was beamed at it.
644541
the electrons from the duster accumulated on the rod thereby giving it a neg charge
828272
You will find all the answers here:\n\nhttp://library.thinkquest.org/10429/high/eleconfig/electron.htm
775698
An electron, with its negative charge, is surrounded by an electromagnetic field. Normally, in most materials, this field is canceled out by the random positioning of all of the other electrons in the material. \n\nIf these electrons are aligned, the material will become a magnet with the magnetic fields aligned toward one end of the material.\n\nIf the electrons are traveling through the material (current or electrical flow) the magnetic field will be moving with the electrons and will surround the wire (refer to "right hand rule") \nIf the wire is coiled around a piece of iron, for instance, this magnetic field will become very strong and align the electrons in the iron - thus magnetizing the iron.