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Tag: Optics

  • Why Do Reflecting Telescopes on Earth Use Lasers?

    Why Do Reflecting Telescopes on Earth Use Lasers?

    The Problem: A Turbulent Sky Astronomers have always battled the same adversary: Earth’s atmosphere. As light from distant stars passes through layers of air with different temperatures and densities, it bends unpredictably. The result is a blurred or distorted image — the same shimmering effect you see when heat waves rise from a road in…