Lesson 8: Techniques in Microscopy

Question 1

What is a Micrometer?

Answer 1

A slide or overlay with a very accurate scale etched into it, used to find the actual size of a specimen

Question 2

What is a Graticule?

Answer 2

Used to measure the size of a specimen under a microscope however it has no units

Question 3

How can we use the Graticule and Micrometre?

Answer 3

-Line tge graricule with the stage and focus the microscope
-Count the number of eyepiece divisions and not the number of micrometers between coincidences
-Each graricule division=Number of graricule divisions/Number of micrometers