Since the diameter of the high-power field (HPF) is too small to be measured dir

Question

Since the diameter of the high-power field (HPF) is too small to be measured directly, it should be computed using the following formula incorporating the low-power field (LPF) diameter. HPF diameter = LEF diameter x LP magnification/HP magnification = nm If your calculations are correct, your answer will be less than 360 jim for a 430X high-power magnification. You will need high-power magnification to size diatoms, a unique type of algae. These organisms, which exist in both marine and freshwater environments, have a shell-like exterior which sinks to the bottom when they die. Hundreds of years later the deposit becomes diatomaceous earth, a substance used in water purification and other filtration processes. Living diatoms constitute a major portion of plankton. As you survey a slide of diatoms at low power, you will notice a tremendous diversity in shape and size. At high power, focus on one type, then sketch and size it, using the calculated field diameter. Select two other types of diatoms and do likewise. Type 1 Type 2 Type 3 Size = mum Size = mum Size = mum

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this is too much irritating please post a clear enough picture

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