antimatter

Examples of antimatter in the following topics:

• Matter and Antimatter

  • Matter-antimatter reactions have practical applications in medical imaging, such as in positron emission tomography (PET).
  • Antiparticles bind with each other to form antimatter in the same way that normal particles bind to form normal matter.
  • Almost all matter observable from the earth seems to be made of matter rather than antimatter.
  • If antimatter-dominated regions of space existed, the gamma rays produced in annihilation reactions along the boundary between matter and antimatter regions would be detectable.
  • There is considerable speculation as to why the observable universe is apparently composed almost entirely of matter (as opposed to a mixture of matter and antimatter), whether there exist other places that are almost entirely composed of antimatter instead, and what sorts of technology might be possible if antimatter could be harnessed.