Biology lab- Toucan manual (pre-lab)
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11 Terms
Cytology
Studying cells
Histology
Studying tissues
Light microscope
uses visible light and lenses to magnify an image, enabling very small objects to be seen by an unaided eye
Simple or compound microscope
Light passes through a series of lenses
Resolution
Refers to the ability to distinguish between two objects
The greater the resolution…
The smaller the distance between them
Normal human eye resolution
0.2 mm
Normal human eye resolution meaning
The eye can distinguish between two objects that are no less than 0.2 mm apart
Contratst
The amount of difference between the lightest and darkest parts of an image
Why are specimens examined with a light microscope stained with artificial dyes?
It increases contrasts and makes the specimen more visible
The best microscopes are able to magnify objects up to how much without losing sharpness?
2,500x