Dictionary

Antimatter

Antimatter


We are searching data for your request:

Forums and discussions:
Manuals and reference books:
Data from registers:
Wait the end of the search in all databases.
Upon completion, a link will appear to access the found materials.

As the same word says, the antimatter it is the opposite of matter, that is: a matter whose elementary particles have an electric charge opposite to normal. Thus, in an antimatter atom we find instead of protons (positive), antiprotons (negative) and, instead of electrons (negative), antielectrons or positrons (positive).

When a particle and an anti-particle come into contact, the phenomenon of annihilation occurs, that is, the transformation of matter into energy. Antimatter, theoretically foreseen by the physicists of the 30s, has been produced in laboratories since the mid-50s, thanks to the powerful particle accelerators.

According to a cosmological theory, in the Universe there are equal amounts of matter and antimatter confined, obviously, in regions far apart. However, at the meeting points, great annihilation phenomena would occur. Gamma rays, which are observed as background radiation of the Universe, are interpreted by some as the secondary product of this annihilation.

According to another theory, however, matter and antimatter existed equally in the origin of the Universe, but with a slight surplus of the first over the second. Therefore, antimatter would have been totally destroyed by annihilation and the current Universe would be constituted by the residue of surviving matter.

In the current state of physical knowledge it is impossible to determine, through astronomical observations at a distance, if a distant galaxy is made of matter or antimatter, because both produce identical electromagnetic emissions.


◄ PreviousNext ►
AntennaYear

ABCDEFGHIJKLMNOPQRSTU VWXYZ



Comments:

  1. Nitis

    I apologize, but in my opinion you are wrong. I offer to discuss it.

  2. Darrius

    I apologize, but in my opinion you are wrong. I can defend my position. Write to me in PM, we will handle it.

  3. Daphnis

    The exact answer

  4. Mikko

    It's just incomparable :)

  5. Fontane

    Certainly. I agree with told all above.

  6. Peer

    Author, write more often - they read you!

  7. Broderick

    Excuse me, I have removed this message



Write a message