Electron microscopes (EMs) are super important tools that help us learn about the structure of cells. They can take really clear pictures of tiny parts inside cells.

Key Features:

• Resolution: EMs can see details as small as $0.1$ nanometers. In comparison, regular light microscopes can only see details that are $200$ nanometers big.

• Magnification: EMs can make things look up to $1,000,000$ times bigger than they really are!

Types of Electron Microscopes:

1. Transmission Electron Microscope (TEM):

   • This type lets us see thin slices of cells.
   • It reveals what's inside the cells, like tiny structures called organelles.

2. Scanning Electron Microscope (SEM):

   • This type gives us 3D pictures of the surfaces of cells.
   • It’s great for looking at the outside shapes of cells.

Importance:

• EMs help us look closely at cell parts, like organelles and cell membranes.
• They are really important for science, helping us make progress in areas like cell biology and studying diseases.