plzzzzzzzzzz help help with my physics project... wht i need is ..the different types of optical instruments.?
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Polarized  Unpolar.  Magnifying  Difracting Refracting Magnifying
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Try the sonometer or the resonance experiment
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Here are some Lab Apparatus \nhttp://library.advanced.org/11430/research/apparatus.htm\nhttp://www.charltonsci.co.uk/charlton_scientific_015.htm\n\nhere are all the Lab Apparatus (click on them to get info one them)\nhttp://en.wikipedia.org/wiki/Category:Laboratory_equipment
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It's what you peer into. There's a diagram here:\n\nhttp://en.wikipedia.org/wiki/Optical_microscope
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Optical telescopes gather visible light and magnifies the image for visual clarity and optical analysis.\n\nOptical telescopes use lenses and mirrors.\n\nRadio telescopes gather radio signal emmited by extraterrestrial bodies and amplify them for analysis.\n\nRadio telescopes have antenna.\n\nRadio and optical signals are both electromagnetic in nature covering different frequency ranges in the spectrum.\n\nRadio waves cover a much bigger range of electromagnetic wave frequesncies -- thus a provides a lot more information for analysis.
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a pin-hole camera (see en.wikipedia.org/wiki/Pinhole_camera)\nor kaleidoscope (see en.wikipedia.org/wiki/Kaleidoscope)\nmay be interesting projects.
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C is true. The others don't really make sense.\nThey are also inherently chromatic, more efficient. Even small ones are cheaper for the size than refracting. \nHubble Space Telescope is reflector also it will work with Ultra violet light, and more precisely focuses than glass can.
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Search these for your specific application.\n\nhttp://www.scienceresearch.com/search/\n\nhttp://www.scirus.com/srsapp/
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try surfing: all-science-fair-projects.com\nyou select there from different categories..\ni hope you can find one :)
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If you mean the three types of microscopes then it is optical, light and electron.
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You're talking about a Class 4 laser.  \n\nThis is more than you can do in a science project.  A laser like that would have high voltage and the light could easily blind you, and the components would be more expensive than you think.  The assembly and alignment is a very fussy procedure, and can't be done in a home workshop, due to the dust that's everywhere.  \n\nMaybe you could make a twyman-green interferometer, for measuring curvature of glass, but it won't be very dramatic.\n\nI figure that a motivated adult with some electronic and physics background, $50K, and a lot of time on his hands might be able to do it in a year.\n\nIf you're into optics, you can do some demonstrations with the beams from laser pointers....
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There is indeed a machine, called a light meter, that you can use. You an also use a device called a Secchi disk which is much more low tech.
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Here are just a few:\n\nSimple light\nCompound light\nDisecting light\nConfocal\nScanning electron\nTransmission electron\n\nI'm sure you could do a Google search on "microscopes" and find what you're looking for.
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The above link lists the five basic types of instruments that are called "microscopes"; but each of them has many variations. For example, the compound microscope includes stop contrast, phase contrast, differential interference contrast, darkfield, and fluorescence microscopes, to name a few.  There are also atomic force microscopes and scanning tunneling microscopes that are variations on the transmission electron microscope, xray microanalysis microscopes that are variations on scanning electron microscopes, etc., etc.
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here's a site with pics that might give you some ideas:\n\n\nhttp://www.physics.usyd.edu.au/competition/comp1998/comp98.html
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http://inventors.about.com/od/mstartinventions/a/microscope.htm
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distance measurements...btw...holographs have been developed (not the three beam version but the single immesion source)