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Joined 1 year ago
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Cake day: June 9th, 2023

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  • Got charged $100 for “dental hygiene training” during annual dentist visit after dentist walked in and asked “Do you floss?” - “Yes.” - “Good. Floss every day.” and walked out. I only know of this charge because insurance refused to pay and they sent the bill to me. I know it’s definitely about these two utterances because this was the only interaction I had with this doctor at all. Everything else was performed by dental students.

    I now refuse to answer any questions that do not directly pertain to the immediate procedure.



  • Oh! They don’t mean that black holes must come in perfect pairs! The headline makes it sound like it’s about wormholes across vast distances. No! What they’ve found is a stable “orbit” solution for the two-body problem. Normally when you place two bodies anywhere in an empty universe, they will gravitate towards each other until they collide. But in a universe with dark energy, there is some perfect distance between them, where the accelerating expansion perfectly counterbalances the accelerating attraction. They’ve used general relativity math to actually calculate such an arrangement.

    The “stable” orbit in this case is the same kind of stable as a pencil balanced on its sharp tip - if it tilts even slightly one way it will fall out of control. Although they tantalize the idea that they might be able to make it truly stable against small perturbations once they finish their spinning black hole solution.

    I would like to have known some specific numbers examples! Like if you have as much dark energy as our universe, and two 10-solar-masses stellar black holes, how far apart would that be? Is it like 1Ly or 1MLy? How far for two 10-million-solar masses supermassive black holes? The formulas they created should give the exact answer but I am not skilled enough to substitute the correct numbers for the letters.


  • I think it’s precisely because there is no governing body for English and all the rules are colloquial, developed through usage, that people do get grumpy! They are the only ones who can create and enforce the rules! Each English speaker feels personally responsible and compelled to correct use they perceive is in violation of the rules the way they want them to be. If they don’t do it right then and there, no one else can.





  • TauZero@mander.xyztoMemes@lemmy.mlba dum tss
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    1 year ago

    The fractions don’t help me when I go to the grocery store and unit price of one bag of nuts is “per pound” and the unit price of another is “per ounce”. You’d better be good at dividing by 16 in your head if you want to price-compare! And you’d better be good at remembering how many fluid ounces are in a quart when you go to the olive oil aisle (hint: it’s not 16).










  • TauZero@mander.xyztoMemes@lemmy.mlCome on baby…
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    1 year ago

    The carcinogenic part is true unfortunately. Frying foods results in chemical reactions that produce thousands of new molecules some of which could be carcinogenic, including acrylamide. We don’t even characterize the complete set of molecules, we just lump them all together under names like “caramelization” or “Maillard reaction”. But fuck it, if I knew all I had to eat for the rest of my life was raw broccoli, that’s not a life worth living.