What are the differences between the scanning electron microscope and the transmission electron microscope?
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SEM scans the surface of the object while in TEM the beam passes through the object\nTEM also have higher resolution
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(m)\n\nNanotechnology comprises technological developments on the nanometer scale, usually 0.1 to 100 nm. (One nanometer equals one thousandth of a micrometer or one millionth of a millimeter.) The term has sometimes been applied to microscopic technology
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below i am enumerating the differentiatin points :-\n1)LIGHT MICROSCOPE>>this is also called optical microscope and it uses light as source of illumination.> image here is produced due to selective absorption of light by different parts of object.>this microscope doesn't require vacuum.>it employs ordinary glass lense and doesn't need magnets.> high voltage electricity is not required.>specimen is kept in liquid medium or a resin.>microscope is small n portable.>radiation risk absent.>contrast in image is achieved by use of dyes like fast green safranin.> image of stained specimen is coloured.\n2)ELECTRON MICROSCOPE->>source of illumintn is electron beam.>image obtained due to selective scattering of electrons by diff molecular components of object>image is black n white>no staining>apparatus enclosed in vacuum>glass lenses not used>electromagnetic lenses of high power used>microscope is large n fixed>radiation risk exists>specimen must be completely dry>high voltage current req to generate electron beam>contrast in image is achvd by use of heavy metals like lead acetate n phosphotungstate>spcmn is ultra thin\nand ah yes resolving power of lght mcrscpe is 0.25micrometre-0.3micrometre while\nfor electrn mcrscp, 2-10 angstrom though theoretically should be 0.25 angstrom.
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Atomic force microscopes can have resolutions as high as a tenth of an angstrom.  There's no one "most powerful" AFM that I know of.  Most have very similar performance characteristics.  Also, the resolution capabilities depend a lot on the characteristics of the sample being imaged, and the mode selected.  So, it's really a question of whether tapping, non-contact, or lift mode is best for your sample, and whether or not this is a sample best imaged by an AFM or if some other technology may work better for what you want to find out, as far as what your resolution will end up being.
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yes its it called the scannig electron microscope I believe
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it's basically from the movement of electron transfer from one of the metal to the other. to know the flow of electrons from which metal to which, u need to know their standard reduction potentials
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a nanometer is one billionth (10- 9 ) of a meter\n\na millimeter is one thousandth (10-3) of a meter
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Actually, a lot of what you are envisioning is happening now.  The concept is called invariance and in general it does occur from the astronomical scale to the atomic scale.  Instruments are now available which do allow for the indirect imaging of actual electron clouds around individual atoms.  \n\nTwo types of microscopy are used to achieve this, atomic force microscopy and scanning probe microscopy.  The major difficulty with these instruments is accounting for the interference of the probe tips in the data acquired.  \n\nRadioactive decay and scattering experiments have also been developed to find some of the answers you are looking for.  Nuclear physicists have found that each time known particles are found by theoretical math or experiment to have smaller parts, that the smaller parts usually have still smaller parts within them.  Though commonly the divisions are leptons and bosons,  and quarks.\n\nSo, the two fields of study that may lead to your answers are nuclear physics and nanoscience or nanotechnology.
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Accordigng to my biology book, a normal microscope has a highest magnification of 430x, a compound microscope can do 1800x, and an electron microscope can do over 100,000x.
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as the previous answer said, the best optical resolution is .2um, which is 2E-7m\n\nthe best transmission electron microscopes have a resolution on the order of 1 angstrom (1E-10m).\n\ntherefore, the electron microscope is 2000 times more powerful.  given your question it appears that you have different optimal resolution values in your class, but yout just have to devide them using consistent units
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Electron microscopes are used to magnify details up to 500,000 times their normal size. However, due to diffraction, even the best optical microscope (the kind you are probably used to using) is limited to a resolution of 0.2 micrometers. (One micrometer is 0.000001 meter.)
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You will find all the answers here:\n\nhttp://library.thinkquest.org/10429/high/eleconfig/electron.htm
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this was won by three people split 2 ways\n\nProfessor. Ernst Ruska, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin, Federal Republic of Germany, for his fundamental work in electron optics, and for the design of the first electron microscope\n\nand the other half, jointly to\n\nDr Gerd Binnig and Dr Heinrich Rohrer, IBM Research Laboratory, Zurich, Switzerland, for their design of the scanning tunnelling microscope.
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I presume we are talking electronics here. Nano technology implies that circuits are of the order of nanometres(very very small). The problems with this is that as the tracks in an integrated circuit (IC) get closer together they interfer with each other through heat, magnetic field effect and electric field effects. The benefits are that because track lengths are small the wires between components do not have to be treated as transmission lines (complicated) at the very high frequencies we demand of modern electronics. \n\nIn sum it is more difficult but gives better results.
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C\n\nThe ribosomes are far to small to see with a ligh microscope. Under an electron microscope, they look like tiny dots (of whatever color you stained them).\n\nAlso, you won't be able to make out the details of the cell membrane either, only that it exists.
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From what I know, they're the same, with a few added tools for the Student version.\n\nBut, for the most part, the major difference between the two is the price. Student version is cheaper from what I know.
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Modern electron microscopes are capable of producing images in which individual atoms or molecules are distinguishable  within the material being viewed (they appear as bumps on the surface.)  However, the actual internal structure of atoms cannot be directly observed using any known technology.