Skip to main content

Reset your password

Please enter the e-mail address you used to register to reset your password

Note: The verification e-mail to change your password should arrive immediately. However, in some cases it takes longer. Don't forget to check your spam folder.

If you haven't received the e-mail in 24 hours, please contact customerservices@ioppublishing.org

Registration complete

Thank you for registering with Physics World
If you'd like to change your details at any time, please visit My account

Close
Particles and interactions

Particles and interactions

Home » Particle and nuclear » Particles and interactions » What is antimatter?

What is antimatter?

15 Aug 2012
Current Time 0:00
Duration 0:00
Loaded: 0%
Stream Type LIVE
Remaining Time 0:00
 
1x
    • Chapters
    • descriptions off, selected
    • subtitles off, selected

      In less than 100 seconds, Helen Heath explains why some particles have equal but opposite partners.

      Back to Particles and interactions Particles and interactions
      Read previous

      How do you recognize a penguin in a crowd?
      Read next

      What is a black hole?

      Discover more from Physics World

      Related jobs

      Related events

      Copyright © 2025 by IOP Publishing Ltd and individual contributors