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Joined 1 year ago
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Cake day: June 28th, 2023

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  • This is also why those power strip lights can sometimes flicker in the dark. They are sometimes over-driven for extra brightness; this does cut their lifespan, but they usually still last for many years regardless. However, towards the end of that shortened lifespan, the accumulated damage to the electrodes leads to flickering as it struggles to keep the neon excited. However, incoming photons can give just a little extra nudge, which sometimes is enough to keep the neon excited and glowing.





  • Interesting. I remember there was a brightness concern with the satellites reflecting too much light, but assumed it was all ok because IIRC they hit their reflectivity reduction targets.

    However, this seems to be about transmissions from the satellites interfering with non-visible observations.

    In a study, published in the Astronomy & Astrophysics journal, scientists used a powerful telescope in the Netherlands to observe 68 of SpaceX’s satellites and detected emissions from satellites are drifting out of their allocated band, up in space.

    … “Why this matters is because of the number,” Dr Di Vruno said. “Suppose that there is a satellite in space that radiates this kind of signal, there is a very, very small chance that this satellite will be in the beam, in the main site, of your telescope.”