Biology- cells
Microscopes
Light microscope Electron microscope
Uses light Uses electrons
Affordable Expensive
Doesn’t need a screen Needs a screen
Portable Hard to move
Low resolution High resolution
Live/ dead specimen can be Only dead specimen can be
examined used
Calculating magnification of an image
Magnification=size of image real size of image
Real size of Cell sizes
object Animal cells are 0.01mm-0.05m and Plant cells are 0.01 -
0.10mm. But the human eye can see things at about 0.05mm
Size of Magnifica This means that to see a cell in detail you need a microscope
image -tion Microscopes magnify the image of a biological specimen so it
appears larger. The type of microscopes used in schools are
compound microscopes. This is because it is portable and
affordable meaning they can be replaced easily and students can
move them to their desks.
Microscopes
Light microscope Electron microscope
Uses light Uses electrons
Affordable Expensive
Doesn’t need a screen Needs a screen
Portable Hard to move
Low resolution High resolution
Live/ dead specimen can be Only dead specimen can be
examined used
Calculating magnification of an image
Magnification=size of image real size of image
Real size of Cell sizes
object Animal cells are 0.01mm-0.05m and Plant cells are 0.01 -
0.10mm. But the human eye can see things at about 0.05mm
Size of Magnifica This means that to see a cell in detail you need a microscope
image -tion Microscopes magnify the image of a biological specimen so it
appears larger. The type of microscopes used in schools are
compound microscopes. This is because it is portable and
affordable meaning they can be replaced easily and students can
move them to their desks.
