Microscopy (AQA GCSE Biology Combined Science): Flashcards
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Who first observed cells in cork and when?
Who first observed cells in cork and when?
Robert Hooke in 1665
What is the max magnification of a light microscope?
What is the max magnification of a light microscope?
×2000
What is the resolving power of a light microscope?
What is the resolving power of a light microscope?
200nm
When were electron microscopes developed?
When were electron microscopes developed?
1930s
What type of images does SEM produce?
What type of images does SEM produce?
3D images
What type of images does TEM produce?
What type of images does TEM produce?
2D images
What is the max magnification of electron microscopes?
What is the max magnification of electron microscopes?
×2,000,000
What is the resolving power of TEM?
What is the resolving power of TEM?
0.2nm
Formula for light microscope magnification
Formula for light microscope magnification
Eyepiece magnification × Objective magnification
What is standard form?
What is standard form?
A number (1-10) multiplied by a power of 10