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  1. P

    Stargazing Reflecting Telescope or Refracting Telescope?

    Which one is better for general non-professional star gazing, Reflecting Telescope or Refracting Telescope? I live in sub-urban area, not that much light/air pollution.
  2. P

    What is the root source of Light ?

    What is the root source of "Light"? I'm not talking about converted/transformed energy via external sources, i.e. Electricity or heat transformed to Light. Whats the root source? Energy itself?