Specimens are measured in microns (µm)! 1 millimeter = 1000 microns (micro meters) If this caterpillar is 20mm long, how many microns is it? (20mm)(1000)

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Presentation transcript:

Specimens are measured in microns (µm)! 1 millimeter = 1000 microns (micro meters) If this caterpillar is 20mm long, how many microns is it? (20mm)(1000) = 20,000 microns

Which magnification will show more space, 40X or 100X? 40X 40X will show more than 100X

Ruler at 40X How many mm across? 3mm How many microns across? 3,000 µm 3 X 1000 = 3,000 µm across

 How many millimeters? Microns?

High power magnification Low power magnification = Low power diameter High power diameter

= 3 mm X (40)(3mm) = (400)(X) 120mm = 400X 120mm mm =

How many microns is that? 0.3mm X 1000 = ? 300 µm

If the field of view is 600 microns across, how far across is one specimen?

If you can fit 6 across 600 microns, how far across is one circle? Diameter / # of objects 600 microns/6 circles = 100 microns each

400X

40X 100X 400X

40X 100X 400X