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Cake day: February 1st, 2024

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  • At this point, they no longer obey the laws of classical physics, and the resulting quantum phenomena — known as relativistic effects…

    This is…not how I would word things. Atomic physics is usually not in a classical (Newtonian) regime, and a quantum treatment is standard.

    Adding relativistic effects to the quantum treatment is also standard, but many aspects of e.g. the hydrogen atom are reasonably well described without relativistic effects, though of course relativistic effects do matter.

    Nitpicking aside, neat stuff!










  • qjkxbmwvz@startrek.websitetoScience Memes@mander.xyzi need sleep
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    1 month ago

    High frequency is generally bad for transmission line losses, so getting power from A to B is better at lower frequency — DC is a great option here.

    If we switched to DC, many things would still flicker though as they would presumably use switching power supplies, but those could be relatively high frequency like you said.

    Interestingly, airplanes use 400Hz, as transmission over distance doesn’t matter, and transformers can be made much smaller/lighter.










  • qjkxbmwvz@startrek.websitetoScience Memes@mander.xyzOn Venus.
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    2 months ago

    Not a historian, but folks on The Internet have characterized the Soviet program as a series of milestones, with the US program a series of stepping stones in support of a single goal.

    This makes sense with the cartoon, where the Soviets were first in basically everything except walking on the moon.

    Not sure how much merit it has, but it’s kinda interesting.