3.3 microscopic measurements and calculations Flashcards
1
Q
what is an eyepiece graticule?
A
glass disk fitted into the eyepiece of the microscope
2
Q
what scale is marked onto the eyepiece graticule?
A
0-100
3
Q
what is the purpose of an eyepiece graticule?
A
allows the size of the object (specimen) to be measured
4
Q
what is the purpose of a stage micrometer?
A
to calibrate the eyepiece graticule as each objective lens will magnify to a different degree
5
Q
what is a stage micrometer?
A
a slide on which a scale is engraved
6
Q
how long is the scale on the stage micrometer?
A
2 mm
7
Q
what are the smallest sub- division on the scale micrometer?
A
0.01 mm/ 10 micrometres
