How do electron microscopes work?
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- Опубликовано: 12 сен 2024
- Technique: Electron microscopy
Transmission and scanning electron microscopy
The hard work of this video was done when we covered light microscopy. This is because electron microscopes essentially work the same as light microscopes but instead of glass lenses warping light, the beams of electrons are warped by electromagnets. The key to understanding electron microscopy is understanding the problem they solve - the wave length of visible light is much bigger than some of the structures we want to be able to see. In this video I explain why this is a problem and how the electron microscope overcomes this issue.
Learning objectives
Explain why the wave length of light limits the ability of light microscopes to visualize small structures like viruses
Explain why we can't simply use smaller wave lengths of the electromagnetic spectrum
Describe the approximate size relationship between viruses and light wavelengths
Explain why electrons are a good visualization tool alternative to the electromagnetic spectrum (like light)
Describe how transmission and scanning electron microscopes work
great explanation, this really helped me write my essay on microscopy :)
Good video, thanks for Share
Great explanation compadre!
love the big wave analogy! seldom does one encounter a reference to Teahupoo in a science video. 🤙
Thank you
After the image hits the sensor, how does the sensor produce an image recognizable by our eyes and brains? That seems like a big missing step. From what I have gathered, it does not produce an image recognizable by us, but rather a person interprets the data and creates the image. Do I have that right?
This is the question and reason I'm here...
What's the data? So its numbers or something?
You axplaine Electromagnétic Lens please with animations
2 am and I'm high as hoot
I am more confused even by heuristic approach