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    Physics of why to use metallic (surface) reflectors for UV

    @focussport I agree with you, these details are even ununderstandable for most people. Remember my school time, I hated math and physics as others and used some sites such as https://plainmath.net/35983/two-firms-v-and-w-consider-bidding-on-a-road-building-job-which-may-o to do my study tasks...
  2. B

    Nice to meet you!

    Welcome to you!
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