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Unformatted text preview: OBSERVING MICROORGANISMS THROUGH A MICROSCOPE Magnification is necessary to observe and study microbes. Also, we know all microbes are small, but we must still be able to measure their size. Units of the metric system are used. The meter is the standard unit, but since this is roughly equivalent to one yard, we must use much smaller units for microbes. Centimeter (cm) = 0.01 meter (2.54 cm = 1 inch) Millimeter (mm) = 0.001 meter (25.4 mm = 1 inch) Micrometer ( μ m) = 0.001 mm (25,400 μ m = 1 inch) Nanometer (nm) = 0.001 μ m (25,400,000 nm = 1 inch) MICROSCOPY---THE INSTRUMENTS Van Leeuwenhoek’s best microscopes had a single magnifying lens and provided approximately 300X magnification. About 1830, an effective compound (2 lens) microscope was developed. 300X magnification....
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This note was uploaded on 01/23/2012 for the course MCB MCB2010 taught by Professor Smith during the Fall '09 term at Broward College.
- Fall '09