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Physics / Math / Engineering


Physics and Mathematics

  1. Alternative theories

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

  • 3090 topics
  • 45032 replies
Is Gravity Complex? - last post by Dubbelosix

Astronomy and Space

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

  • 1321 topics
  • 24214 replies
Chinese Scholar, Jian Liang... - last post by xps13579

Engineering and Applied Science

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

  • 284 topics
  • 2609 replies
Phosphor Dots - last post by Flummoxed