Most Powerful Microscope

  • Thread starter Flatland
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  • #26
Rach3
Flatland said:
uhh where did I say images produced by electrons aren't real? In fact that's precisely what I mean.
...
What is the smallest image ever seen that still constitute in a classical sense of "seeing." Why is this question so hard to understand?

The "classical" sense of seeing is directly observing visible light with the eye, perhaps through a lens.
 
  • #27
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Have any of you seen in the dark a scintillation of what might be an individual particle?
 
  • #28
Astronuc
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Flatland said:
Really? So we've been able to see physical features of an atom? Like the electron cloud and stuff? What does it actually look like? Pictures is really what I want
It is impossible to 'see' the 'physical features' of an atom because that requires very tiny particle with wavelengths smaller than those features. Neutrinos would be ideal if the interacted much more readily with matter. But then the physics of the universe would be very different.

The light we see is simply light that is scattered off atoms of the object we are seeing. Similarly, the image one sees from electron microscopy is due to the electrons iteracting with the object being observed and then forming an image on a CCD or screen.

IBM has mapped the surface of materials and formed an image of atoms, but they simply look like blobs.

As others have indicated there is a limit below which 'visible' or 'seeing' becomes meaningless.
 
  • #29
Gokul43201
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Scientists have imaged electron orbitals within atoms.

http://www.nrc-cnrc.gc.ca/highlights/2005/0501electronimaging_e.html[/URL]

[url]http://www.nature.com/nature/journal/v432/n7019/abs/nature03183.html[/url]

But from what you said in the OP, I imagine you don't consider these REAL images !
 
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  • #30
Rade
Image of Co atom at this link:
http://physics.nist.gov/Divisions/Div841/Gp3/Projects/STM/atom_dynamics.html [Broken]
 
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  • #31
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From quantum mechanics, you can't really "see" an electron cloud... particularly, not all parts of the cloud are really even occupied... the cloud just represents the probability density of an electron actually being there.
 
  • #32
http://www.insidescience.org/research/first_detailed_photos_of_atoms [Broken]

here is the closest thing to what you are looking for that I could find...
 
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  • #34
Borek
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This is not better result than IBM single atoms mentioned earlier. Well - it is new in terms of them being able to picture organic matter, I think IBM worked on metal surfaces, but the resolution sounds to be about the same.
 
  • #35
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Hi there,

It looks like that nobody before IBM or those guys at UCLA has ever seen how an atom looks like :)

Does it mean that obtaining real images of atoms is quite a recent achievement?
 

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