Transmission electron microscope

• specimen is dehydrated and stained, placed in a vacuum
• electrons pass through the specimen which is stained by metal salts
• the electrons that pass through the specimen are focussed on the screen or photographic plate
• the image is formed as a 2D black and white image called an electron micrograph
• magnification of up to x2000000000
• resolving power of 0.2 nm