Can we see antimatter with photons?

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    Antimatter
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Discussion Overview

The discussion revolves around the question of whether antimatter can be "seen" using photons, particularly in a hypothetical scenario where antimatter exists in a macroscopic form without interacting destructively with regular matter. Participants explore the interaction of photons with antimatter and the implications for visibility.

Discussion Character

  • Exploratory
  • Conceptual clarification

Main Points Raised

  • One participant questions if it is possible to see antimatter and whether photons can interact with it in a way that makes it visible.
  • Another participant asserts that positrons, as a form of antimatter, are as visible as electrons, emphasizing that photons interact with charge regardless of whether it is matter or antimatter.
  • A participant suggests that if an "anti-baseball" were created, it would appear identical to a regular baseball to photons, provided it is isolated from regular matter.
  • It is noted that antimatter consists of anti-electrons, anti-protons, and anti-neutrons, and that photons do not differentiate between matter and antimatter, leading to the conclusion that visibility would be the same.

Areas of Agreement / Disagreement

Participants generally agree that photons can interact with antimatter in a similar manner as with matter, but the discussion remains hypothetical and does not reach a consensus on practical visibility or implications of such scenarios.

Contextual Notes

The discussion is based on hypothetical scenarios and does not address practical limitations or the feasibility of creating macroscopic antimatter without interaction with matter.

Light Bearer
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This is probably a stupid question...but I'm curious to know whether or not we can 'see' antimatter? In the hypothetical situation where enough antimatter comes together to form something macroscopic/doesn't interact with regular matter and destroy itself, could we see it? Would photons (photons are their own antiparticles, right?) interact with antimatter in such a way as to allow it to become visible to our eyes?
 
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positrons are just as visible as electrons. Photons interact with charge, whether it is matter or 'antimatter'.
 
Light Bearer said:
In the hypothetical situation where enough antimatter comes together to form something macroscopic/doesn't interact with regular matter and destroy itself, could we see it? Would photons (photons are their own antiparticles, right?) interact with antimatter in such a way as to allow it to become visible to our eyes?

For sure! Photons cannot tell the difference between matter and anti-matter; it looks the same to them. If you had an "anti-baseball" it would look just like a regular baseball, so long as it was kept under high vacuum. Of course if you had such a vast amount of anti-matter in your lab you'd be on the edge of blowing up your city.
 
Antimatter is simply anti-electrons, anti-protons and anti-neutrons. As Meir and kurros point out, photons do not know the difference. Neither, in fact, does antimatter. It will happily go about making molecules and baseballs just like matter does. (As long as there's no matter around.) But since we see it with photons, we won't see any difference.
 

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