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Joined 1 year ago
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Cake day: August 4th, 2023

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  • Going into physics was the biggest mistake of my life. I should’ve declared CS. I still wouldn’t have any women, but at least I’d be rolling in cash.

    Honestly, there wasn’t all that much cash to roll in and there’s less all the time now. Plus, if you think busted equipment is bad, wait until I tell you about inheriting legacy code.







  • Codex@lemmy.worldtoCasual UK@feddit.ukAm I being dense?
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    18 days ago

    Several of these irritate me but ultimately evoke a solid

    But fuck me playing with the person who came up with these would test my patience.

    Pizza, V? I suppose cheese and meats are optional. One can. Some do. If we get into “It has minerals in it!” then we’ll have to argue about what atoms are, so fine, pass.

    Guitar (!) Strings, A? I know about catgut, for violens in my mind, but let us wiki it. Huh neat, catgut is intestenal fiber from usually goat or sheep, sometimes cat-tle, but never actually cat. And, while still preferred for concert harps and classical instruments, guitars all mostly switched to steel in the 1900s (and nylon or mixed later). So when was this game printed, how old are you imagined-ghost-of-the-author?




  • So photons, the particle of light, can interact with matter (atoms) in different ways. It could be absorbed by an electron, and then the energy transfered could knock the electron off the atom. That’s the photoelectric effect. It could also excite an electron into a higher orbital but not dislodge it, and often the electron will emit a new photon when it drops back down to ground state. That’s phosphorescence. The photon could also hit nothing and travel straight through.

    If you shot a photon (using a laser) through a cloud of atoms, you could watch for these interactions. Normally, light seems to slow down when passing through a medium (air or water) because the photons get absorbed and re-emitted. In bulk, this causes light scattering and slows travel.

    In this experiment, the cloud is made of ultracold rubidium. Rubidium is quite reactive and a pretty big atom, but i dont know specifically why it is used. What surprised the experimenters is that they could measure both the excited states of the atom and the emission of the photon. Sometimes, the atoms would seem to stay excited even though the photon had already been emitted, and also sometimes atoms would get excited even though no photon had been absorbed.

    This is interesting but kind of makes sense to me. The quantum properties of reality don’t disappear when we move up to bigger scales and aggregates. Rather the quantum properties seem to just “average out.” But this has weird effects. Electrons, for example, aren’t little balls in orbit around the nucleus. They’re waves of energy that get probabilistically smeared out over an “orbital”, an area around the nucleus where that electron is likely to be located. When atoms combine into molecules, the orbitals also combine into complex orbitals over the entire molecule. And when lots of atoms get arranged into a crystal (like in metals) those orbitals smear out over the entire aggregate. That’s kind of what it is to be entangled with other matter, to be bound up in the same quantum probability function.

    So to my mind, looking at how one atom reacts with a small number of atoms in a supercooled cloud doesn’t make sense, and gives weird results like negative time. The wave function of the photon must account for the wave function of the entire cloud. The single photon has infinitely many possible interactions through the cloud, which in aggregate always amount to taking longer to pass through while exciting some electrons along the way.




  • A Call of Duty RTS? Only if they brought back WC3’s Heroes, and maybe gave you a whole Company of them to manage.

    RTS’s need a massive new hit to redefine the genre. The starcraft style is stale and too slow for how most people game today. I’d kind of enjoy seeing people take another shot at where C&C4 and AoE3 were trying to go: something more tactically oriented with a greater emphasis on mobility. I think that era of RTS innovation got completely hamstrung by trying to force every game to not only have multi-player but also to be an esport and also to be a live-service endless money machine.

    You may note that games today are still being ruined by the same forces.