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Physics / Math / Engineering


Physics and Mathematics

  1. Alternative theories

Formulae, ideas, theories, speed of light, black holes...

  • 3515 topics
  • 52654 replies
Michelson Morley And Gravit... - last post by A-wal

Astronomy and Space

Space, Human spaceflight, space probes and the exploration of our Solar System. No personal theories or speculation please.

  • 1394 topics
  • 24755 replies
Building A Supermassive Bla... - last post by VictorMedvil

Engineering and Applied Science

The art of applying science to specific problems. Materials, construction, technical issues and related topics.

  • 311 topics
  • 2842 replies
How Much Air Can An Ioniser... - last post by lewisw85