Microscopes
- Created by: hannahi24
- Created on: 07-01-16 11:36
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- Microscopes
- Scanning Electron Microscopes
- Negatives
- Large
- Very Expensive
- Require a lot of skill and training to use
- Benefits
- Produces a 3D image
- Resolution of 10nm
- Magnificationof 15x to 200,000
- How it works
- Electrons bounce off the specimen's surface (NOT PASS THROUGH) and is focused on a screen. The specimen is coated in metal and vaccumed
- Produces a black & white image BUT false colour can be added on the computer
- Electrons bounce off the specimen's surface (NOT PASS THROUGH) and is focused on a screen. The specimen is coated in metal and vaccumed
- Negatives
- Light Microscopes
- Benefits
- Easy to use
- Relatively cheap
- Portable
- Can look at living specimens
- Magnification of x1500 to x2000
- Resolution of 200nm
- Negatives
- Can't see small organelles like ribosomes
- Benefits
- Magnification
- How much bigger an object becomes compared to the original much bigger an object becomes object
- Resolution
- The ability of a microscope to produce an image that shows fine detail clearly
- Laser Scanning Microscopes
- How it works
- Laser light scans an object point by point then its reassembled by a computer to give one image
- How it works
- Scanning Electron Microscopes
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