Can we see electrons in atoms?

In summary, a powerful microscope can potentially allow us to see electrons in atoms, but it would require a shorter wavelength that could potentially destroy the atom. Alternatively, an electron microscope can be used to see finer details and even the electron distribution, as seen in a video of the most powerful microscope imaging a sheet of carbon atoms.
  • #1
AhmedHesham
96
11
I have just seen a video about the most powerful microscope. The best image of that microscope
represents a sheet of carbon atoms . Can we now see
electrons in these atoms or we need a more powerful
one?

https://www.physicsforums.com/insights/can-see-atom/
 
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  • #2
If the microscope is powerful enough, has a short enough wavelength (perhaps .3*10^-9 meters for solid carbon). But light of that wavelength has an energy h*c/lambda of approximately 4000 electron volts. It would tear the atom apart. Maybe one of the particle physicists can suggest a particle that can do a better job than photons.
 
  • #3
Look at the bottom of this page for a list of similar threads discussing this question.
 
  • #4
AhmedHesham said:
or we need a more powerful
one?
Not a more powerful one but using something other than light. An electron microscope uses a beam of electrons and the electrons in the beam have a 'wavelength' that is much shorter than EM waves, for a given energy. You can see much finer detail than EM waves can produce. It may not satisfy the (OP) conditions required for 'seeing' the orbital electrons but the electron distribution can be 'imaged' with electrons. This link gives one example of imaging the actual electron orbitals in graphene.
 

1. Can we actually see electrons in atoms?

No, we cannot see electrons in atoms because they are much smaller than the wavelength of visible light. This means that they cannot be seen with the naked eye or even with the most powerful microscopes.

2. How do we know that electrons exist if we can't see them?

We know that electrons exist because they have been studied and observed through experiments and scientific evidence. Scientists have also developed models and theories, such as the quantum mechanical model, to explain the behavior and existence of electrons in atoms.

3. Can we indirectly observe electrons?

Yes, we can indirectly observe electrons through experiments, such as the Millikan oil drop experiment, which measures the charge of an electron, and the photoelectric effect, which shows the behavior of electrons when exposed to light.

4. Why do we learn about electrons in school if we can't see them?

Although we cannot see electrons, they play a crucial role in understanding the behavior and properties of matter. Learning about electrons helps us understand concepts such as electricity, chemical reactions, and the structure of atoms.

5. Is there any technology that can allow us to see electrons in atoms?

Yes, there are advanced imaging technologies, such as scanning tunneling microscopy and transmission electron microscopy, that can visualize the structure and movement of electrons in atoms. However, these technologies are limited to specific conditions and require highly controlled environments.

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