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Cake day: July 2nd, 2023

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  • Sound is air vibration

    Sound is not exclusive to air, it can be generalized to vibrations in any media. Whale song and dolphin echolocation are certainly sounds, and we’re almost always talking about them propagating in water rather than air.

    which has to travel from one place to the next

    No, that isn’t how sound works. In air this would be a description of wind, not sound.

    just transfer kinetic energy to the adjacenct atom

    This is actually a good description of how sound waves propagate.








  • A university degree in Canada costs 16-20k CAD per year for tuition/books/etc, more if you’re an international student. Plus residence fees and food and other costs of living if the student isn’t staying at home and just commuting to university.

    There’s a reason Canada suffers from brain drain of so many of our skilled workers leaving. Other places, particularly the USA, are popular destinations because they are better opportunities economically.