microscopy

tlight microscopes-use light and lenses to form an image. they let us see individual cells and large subcellular structures. 

electron microscopes- higher resolution. they let us see smaller subcellular structures.

formula:

magnification = image size/real size.

preparing the slide:

1) add a drop of water to the middle of the slide

2) cut up an onion and seperate it into layers. peel off some epidermal tissue using tweezers

3) place…