Cell size and magnification + calculations

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  • Created by: Steff06
  • Created on: 29-03-16 11:57
How do you convert mm to um?
times (x) by 1000
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How do you convert cm to mm?
times (x) by 10
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How do you convert um to nm?
times (x) by 1000
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What does um stand for?
micrometres
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What does nm stand for?
nanometres
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What is the resolution limit of the human eye?
100nm
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What is the calculation to find the magnification?
Image size divided by actual size (I/A)
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How is the actual size calculated?
Image size divided by magnification (I/M).
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How would you work out image size?
Actual size x magnification (AxM).
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How would you work our total magnification?
Eye piece lens magnification x objective lens magnification.
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If the eyepiece magnification was x15 and the objective lens was x12, what would the total magnification be?
15x12 = x180
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If the image size was 50mm and the magnification was x1200, what would the actual size be?
Actual = I/M = 50/1200 = 0.0416 x1000 = 41.6um
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If the actual size was 40um and magnification was x3000, what would the image size be?
Image = AxM = 40x3000 = 120000um/1000 = 120mm
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If the actual size was 0.5um and image size was 1.6cm what would the magnification be?
M = I/A = 1. 6 x 10 = 16mm x 1000 = 16000um, 16000/0.5 = x32000
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If the image size = 80mm and actual size = 50um, what is the magnification?
80 x 1000 = 80000um. 80000/50 = x1600
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Card 2

Front

How do you convert cm to mm?

Back

times (x) by 10

Card 3

Front

How do you convert um to nm?

Back

Preview of the front of card 3

Card 4

Front

What does um stand for?

Back

Preview of the front of card 4

Card 5

Front

What does nm stand for?

Back

Preview of the front of card 5
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