Microscopes Flashcards
What is an eyepiece graticule?
Glass disc fitted into the eyepiece of the microscope
What is a stage micrometer?
Used to calibrate the eyepiece graticule. It is a microscope slide which is engraved in a fine and accurate scale
How do you use an eyepiece graticule?
1- measure using the eyepiece graticule
2- calibrate eyepiece graticule against stage micrometer
3- take a number of measurements to calculate a mean
Benefits of a light microscope over electron microscope?
Can look at living things so they don’t have to be in a vacuum like electron and can produce colour images
What are artefacts?
Things that result from the way that the specimen are prepared and they are not part of the natural specimen