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Cake day: July 6th, 2023

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  • Dalvoron@lemm.eetoScience Memes@mander.xyzVirtual Particles
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    1 month ago

    I think the point is that the bladder is above where the pee comes out so gravity could be pulling it out of the body. Aiming upwards wouldn’t change this relationship because the pee is outside the body at that point. By being upside down the bladder is now below where the pee comes out and gravity would be keeping it in. By being able to pee upside down, he demonstrates that gravity is not a necessary component.

    I think it can be demonstrated by aiming upwards with some extra pressure though. If gravity were the only thing pulling pee out, i wouldn’t be able to shoot over someone’s head for instance as the pee wouldn’t have enough kinetic energy. Thus gravity is not the only component.





  • If we know the values of ln(-1)¹⁰ and pi¹⁰ we hypothetically could calculate their divided result as -1 instead of using strict logic, but it is missing a few steps. Moreover logs of negative numbers just end up with an imaginary component anyway so there isn’t really any progress to be made on that front. Typing ln(-1)¹⁰ into my scientific calculator just yields i¹⁰pi¹⁰, (I’m guessing stored rather than calculated? Maybe calculated with built in Euler) so the result of division is just i¹⁰ anyway and we’re back where we started.





  • Dalvoron@lemm.eetoScience Memes@mander.xyzApplications
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    6 months ago

    I have seen 1 called a trivial factor, but I have never seen it excluded entirely from a factor list: perhaps it’s a cultural thing like how 0 is/isn’t a natural number depending on where you are from.

    On further research it seems like my earlier critique about requiring exactly two prime factors is a little off in any case, as it would exclude e.g. 4 (which only has one prime factor). It seems like semi primes must be a product of exactly two prime numbers so I think any definition based on number of factors is doomed to over- or under- define these semi primes as they could have either three or four factors.







  • Oh I’ll admit I’m wrong either way, but yes I do not like my authority to be challenged. It makes the class significantly harder to manage when students feel like it’s OK to dunk on me at any opportunity and provides a bad environment for learning. My preference would be respect, but I will settle for being treated with respect. If a student won’t offer it to me with their questions, then I won’t offer it to them with my response. But I will always admit they are correct (if they are).

    Authority that cannot be challenged is authority that cannot be respected. Authority must continually earn the respect of its constituents, or it will lose its power over them.

    I sort of agree with this. In a classroom, you can challenge me, my knowledge, my abilities. I like to think I earn the respect of my students with all of these, as well as my compassion, my fairness, my humour.

    The reality is that I am an authority however. I wrote the assignments and the exam and I mark them too, and I do it all in accordance with the state-mandated curriculum. If they “know” something because they read about it elsewhere, I should be treated as a equally valid source of information because I am. I know the curriculum inside and out. They dont “need me to admit that I was incorrect, and move forward with the correct information”, they need me to tell them why the thing they “know” is not the thing I’m teaching them. I offer that I was incorrect out of humility, not necessity.





  • My experience is that duolingo is a good component of language learning but is bad as a whole package. I have that, a flash card app, daily word games, and a YouTube channel for a children’s TV network in my language. None of them individually would teach me the language, but collectively they reinforce each other and fill in many gaps. Alas, neither innovative language nor lingodeer have the language I want at the moment.