• 2 Posts
  • 23 Comments
Joined 1 year ago
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Cake day: June 18th, 2023

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  • I’ve been missing an alternative to Facebook that I can use for non-anonymous planning of events and communication in hobby groups etc. and I had never heard of any of the “Facebook-type” federated stuff before!

    Now I just need to convince a bunch of people that this is viable to use without being the annoying guy…





  • Assuming

    • cylindrical human, 2m tall, 25 cm diameter.
    • air displaced from the point you teleport to is instantly moved to form a monolayer (1 molecule thick) on your surface.
    • The displacement of air is adiabatic (no heat is transferred, which will be true if the displacement is instantaneous)

    Volume of displaced air: ≈ 100L = 0.1m^3 At atmospheric conditions: ≈ 4 mol

    Surface area of cylindrical human: ≈ 1.58 m^2 Diameter of nitrogen molecule (which is roughly the same as for an oxygen molecule) : ≈ 3 Å Volume of monolayer: ≈ 4.7e-10 m^3

    Treating the air as an ideal gas (terrible approximation for this process) gives us a post-compression pressure of ≈ 45 PPa (you read that right: Peta-pascal) or 450 Gbar, and a temperature of roughly 650 000 K.

    These conditions are definitely in the range where fusion might be possible (see: solar conditions). So to the people saying you are only “trying to science”, I would say I agree with your initial assessment.

    I’m on my phone now, but I can run the numbers using something more accurate than ideal gas when I get my computer. However, this is so extreme that I don’t really think it will change anything.

    Edit: We’ll just look at how densely packed the monolayer is. Our cylindrical person has an area of 1.58 m^2, which, assuming an optimally packed monolayer gives us about 48 micro Å^2 per particle, or an average inter-particle distance of about 3.9 milli Å. For reference, that means the average distance between molecules is about 0.1 % of the diameter of the molecules (roughly 3 Å) I think we can safely say that fusion is a possible or even likely outcome of this procedure.




  • Some languages - specifically Norwegian that I know of, don’t have separate words for “boyfriend” and “girlfriend”. In Norwegian we have the word “kjæreste” which can be directly translated to “dearest”. To me it always feels a little weird to use “boyfriend” or “girlfriend”, i guess the same could be true for other non-native english speakers.






  • I definitely agree that breaking best practices in a way that could lead to UB or hard-to-find bugs should give point deduction. The sole requirement shouldn’t be “write standard compliant code”.

    However, a test does not simulate a real-world development environment, where you will have time to look through your code with fresh eyes the next day, and maybe even have someone review your code. The only thing a test reasonably simulates is your ability to solve the “thinking” part of the problem on your own. Thus, deducting points for trivial stuff that would 10/10 times be caught, either by the compiler, the developer or the reviewer, but isn’t “strictly correct” just seems pedantic to me.

    To be fair, other than the example by OP I have a hard time coming up with things that wouldn’t be either caught by the compiler or are very bad practice (which should give point deduction).



  • I have a masters degree in materials chemistry and engineering. When people find that out they often say stuff like “I could never understand that” or similar.

    I am of the firm belief that I could teach anyone everything I know given enough time and motivation. The thing is, I don’t think there’s anything special about me that makes me capable of doing what I do, other than thinking chemistry is extremely interesting. I don’t have a more capable brain or anything. I’m just a bit of a nerd.

    I absolutely agree that way too many people have the misconception that you have to be “special” to do a lot of the things many people find hard. It’s all about being interested enough to spend time learning it.