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Physics / Math / Engineering


Physics and Mathematics

  1. Alternative theories

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

  • 3186 topics
  • 48848 replies
Why Planck's Formula Fo... - last post by rhertz

Astronomy and Space

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

  • 1347 topics
  • 24454 replies
3 Facts Maybe You Don't... - last post by VictorMedvil

Engineering and Applied Science

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

  • 294 topics
  • 2699 replies
Metric - last post by fahrquad