2007-10-06 06:24:48 · 4 answers · asked by Kiki 2 in Science & Mathematics ➔ Biology
I know how they do it in labs:
Small and very thin, transparent glass is positioned below the object you are watching. That glass has horizontal and vertical lines let's say 0.1mm apart and you can measure by that. For different magnifications they use finer or more coarse glasses.
2007-10-06 06:34:12 · answer #1 · answered by Srki 1 · 0⤊ 0⤋
Use micrometer or nanometer.
For reticle with 1 cm/100 divisions, stereo microscope 1-4x gives about 100-25 microns per division (p<.03) and compound microscope 10-100x yields around 1-.1 micron per division (p<.03).
The scanning electron microscopes, X-ray reflection interface microscopes for advanced researches have a constant symbol of nano length to measure.
http://www.physorg.com/news82304881.htm
2007-10-08 10:03:44 · answer #2 · answered by toodd 4 · 0⤊ 0⤋
simple by knowing the power of lens u r using
2007-10-10 05:33:34 · answer #3 · answered by ata_007 2 · 0⤊ 0⤋
most substances are measured in micrometers. http://en.wikipedia.org/wiki/Micrometer
2007-10-06 06:28:40 · answer #4 · answered by computer whiz 5 · 0⤊ 0⤋