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How do you calculate the length of an organelle?

Anyone?? :s-smilie:
Original post by StarryEyed4

Original post by StarryEyed4
Anyone?? :s-smilie:


Measure with a microscope and graticule, scale up using the magnification equation.
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Avatar for tammie94
tammie94
15
Well you would have to calibrate because when you look through a microscope and even if you have an eyepiece graticule (<--- basically the ruler etched on the eyepiece) in then it would show different lengths for different magnifications. So first you would, place the stage micrometer on the microscope stage (<--- basically the bit your supposed to put your specimen on). This ruler is 1mm long and divided into 100 divisions, so each division is about 0.01 mm or 10 micrometers.

(By the way there are 3 objective lenses *4, *10 and *40.) So if you were using *4 objective lens and *10 eyepiece (total magnification = *40), 40 eye piece units = 1 mm (1000 micrometers). So 1 eye piece unit = 1000/40 = 25 micrometers.

Then that should make the measuring bit a little easier. Anyway I hope this helped.
(edited 12 years ago)
Biology Isa 2015

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