B1 Flashcards
What are the 2 microscope types?
Light microscope
Electron microscope
When were light microscopes made?
Mid-17th century
How do light microscopes work?
A beam on light forms an image of an object
What is the maximum magnification for a light microscope?
Around 2000 times
Why are light microscopes good?
They are relatively cheap
They can be used almost anywhere
They can magnify live specimens
When were electron microscopes made?
1930s
How do electron microscopes work?
A beam of electrons are used to form an image either 2d with very high magnification and resolution or 3d but with lower magnifications
What is the maximum magnification for an electron microscope?
Around 2,000,000 times
Why are electron microscopes bad?
Large
Very expensive
Have to be kept in special temp, pressure and humidity controlled rooms
