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Light microscopy

Microscopy: estimating the size of an object

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This Smart Worksheet provides interactive practice in calibrating and using an eyepiece graticule to estimate the size of microscopic objects.

Learning outcomes

  • Determine why an eyepiece graticule requires calibration.
  • Calculate the calibration for an eyepiece graticule using a stage micrometer.
  • Calculate the size of different objects seen down a microscope using an eyepiece graticule.
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Skills

Concepts, Principles and Theories

  • What the purpose of various parts of a microscope are

Obtaining and Recording Data

  • How to count divisions on a stage micrometer and eyepiece graticule

Using Instruments and Equipment

  • How magnification can affect calibration

Interpreting and Analysing Data

  • How to calibrate an eyepiece graticule
  • How to calculate the length of an object in a microscope

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Prof. Nicky King
University of Exeter

"The great thing about Smart Worksheets is that they tell you at every point whether you’ve got it right or wrong, what might be wrong and how you might go about changing it. The students found that really valuable. In their exam, we found that the average mark in the maths questions rose from 59% to 79%, which made a really big difference to the student outcome.”

Details

Degrees

Forensic science
Biological science

Modules

Bio essentials
Tissue & cell biology
Microbiology

Topic

Light microscopy

Purchase option

The Smart Worksheet Library

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