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Jonny 290 posted:the negative terminal/ground of your car is actually the supply of electrons. But aren't electrons negatively charged so this naming makes sense?
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Nov 7, 2019 22:49
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From the previously recommended Asimov book: quote:Franklin visualized a positive charge and negative charge as being analogous to the magnetic north and south poles, as far as attraction and repulsion was concerned. There is an important difference, however. The magnetism of the earth offered a standard method of differentiating between the magnetic poles, depending upon whether a particular pole pointed north or south. No such easy way of differentiating a positive charge from a negative charge existed.
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Nov 8, 2019 01:53
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it helps if you think of the electric fluid discussed as if it were juice
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Nov 8, 2019 17:17
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fritz posted:isnt magnetism just what you get when you add special relativity to electricity? https://en.wikipedia.org/wiki/Relativistic_electromagnetism gently caress I love science I was mentioning today to my gf how fuckin obnoxious I would be if i hadn't been taught science in university, and understand the scientific method etc, because I never picked it up at school like it's not like I woudn't have still become the person I am as far as wide interests reading the wikipedia all the time, only I wouldn't be applying critical thinking and science lol Sagebrush posted:i've been watching this series of 1950s lectures on aerodynamics called "the secret of flight." it's really cool stuff. everything is done with physical models and smoke tunnels and it's immediately clear what is going on. the lecturer is a weird old german guy but he's very good at explaining what's happening. i think for the first time i genuinely understand how lift is formed -- not just the high school "air travels faster on the upper surface" but also why the air goes faster and all the phenomena that that entails. this was interesting love fluids. did you know juice is a fluid?
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Nov 9, 2019 10:20
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something that I find incredibly interesting, but not because I actually *get* it is this notion here where someone (Theodor Kaluza) was working with the precursor math and concepts to string theory loving around with relativity, which is calculated with 4 dimensions, but added a dimension into the math (again, I get what dimensions are and I think I know what math is, but the actual meaning of this because I assume it's calculus is beyond me) and maxwells equations for electromagnetism pop out that's quite "cool", as they say, if you ask me
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Nov 9, 2019 10:29
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who wants to feel bad : https://www.youtube.com/watch?v=J7x9leQqrkc (from the american geophysical union)
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Nov 12, 2019 00:29
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Schadenboner posted:But aren't electrons negatively charged so this naming makes sense? negatively charged relative to what? there's no universal law that says this particle is charged positively and this one is charged negatively. those are human constructs.
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Nov 12, 2019 00:32
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originally we got the “this” and “that” the wrong way around thinking it flowed from this to that but really the charge flows from that to this but the human construct of an electron being negative and positrons being positive is very practical and most excellent
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Nov 12, 2019 00:43
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Jonny 290 posted:negatively charged relative to what? They are relentlessly negative.
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Nov 12, 2019 00:45
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it's arbitrary in every possible way it's (mostly) arbitrary to decide which direction the charges flow it's arbitrary to decide which direction of charge flow is positive it's arbitrary to consider positive flow to be an increase in some measured value it's arbitrary to use a + for positive and a - for negative it's arbitrary to use the word "positive" and "negative" nothing really exists, the entire universe is only as real as your perception arbitrary
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Nov 12, 2019 00:46
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echinopsis posted:originally we got the “this” and “that” the wrong way around thinking it flowed from this to that but really the charge flows from that to this god can you imagine the confusion there would have been if positrons had negative charge
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Nov 12, 2019 01:17
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and what's the deal with driving on the parkway and parking on the driveway? and why do i have to press "start" to shut down?
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Nov 12, 2019 01:48
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echinopsis posted:love fluids. did you know juice is a fluid? joose is actually a powder
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Nov 12, 2019 02:16
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DELETE CASCADE posted:joose is actually a powder "Something something something, in the Volkswagen's ashtray!" 
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Nov 14, 2019 23:39
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Sagebrush posted:it's arbitrary in every possible way If you think that is fun, check out Quantum Darwinism
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Nov 18, 2019 21:16
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Modern Royal Institution lectures are worth a watch, especially the old ones... https://www.youtube.com/watch?v=OLNFrxgMJ6E this is well worth it for the last couple minutes alone
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Dec 21, 2019 21:02
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https://www.youtube.com/watch?v=bsX84KfNBWQ
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Dec 22, 2019 04:36
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here in a new applied science https://www.youtube.com/watch?v=K_N_h_mKf-4
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Dec 23, 2019 03:11
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that was not a very exciting video tho
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Dec 23, 2019 03:26
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Applied science is my fav youtube channel by far.
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Dec 23, 2019 07:21
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Bulgakov posted:that was not a very exciting video tho it was interesting. dunno what you'd do with one of those though
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Dec 23, 2019 17:52
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akadajet posted:it was interesting. dunno what you'd do with one of those though like all things on the internet try to temporarily fill an empty void. in this case your rear end
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Dec 24, 2019 19:30
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lol
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Dec 26, 2019 08:53
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https://youtu.be/oKNhmJHyN9w
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Dec 26, 2019 11:24
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bumping this thread because i love knife person i think this thread does too but man https://www.youtube.com/watch?v=WZJ7nSdIbwk
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Jan 23, 2020 03:49
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favourite goon fantasy novel author brandon sanderson is teaching a writing class and dang if he's not a really interesting lecturer https://www.youtube.com/watch?v=-6HOdHEeosc
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Jan 24, 2020 05:50
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i made a video https://youtu.be/mnxs6CR6Zrk
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Jan 25, 2020 08:48
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i watched that video
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Jan 25, 2020 18:37
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hell, same
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Jan 25, 2020 19:06
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Vincent Racaniello's starting his principles of virology course up again, 100% recommended https://www.youtube.com/watch?v=lj3NhPgOoX4
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Jan 25, 2020 22:55
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how bout some dinosaurs https://www.youtube.com/watch?v=JC3aCs5f4-I
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Jan 26, 2020 01:07
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fritz posted:Vincent Racaniello's starting his principles of virology course up again, 100% recommended Hell yes. Subscribed, gonna follow these lectures.
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Jan 26, 2020 12:03
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fritz posted:how bout some dinosaurs He needs to go easy on the gravel for breakfast.
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Jan 26, 2020 12:24
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this one is pretty timely as blizzard very visibly bodged remaking warcraft 3 in ways pretty directly called out in your video. arstechnica runs it down pretty well https://arstechnica.com/gaming/2020/01/warcraft-iii-reforged-not-the-flavor-of-chaos-we-were-hoping-for/. specifically they keep most of it the same, but add global illumination, a bunch of environment shaders, and more detailed meshes. however, applied to the originals handcrafted high-contrast colorful cartoony style it ends up looking incredibly flat and nondistinct. they also messed up all kinds of other things, but it did immediately bring the video to mind on the impact hand-picking/-grading color can have. e: actually embed Cybernetic Vermin fucked around with this message at 20:42 on Feb 1, 2020 |
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Feb 1, 2020 20:25
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The latest entry in the Marble Machine X series (an attempt to build a version of this thing that actually works reliably enough to use on stage in a tour) is amazing, and much more self-contained than usual: https://www.youtube.com/watch?v=6qcz4tmD5bQ
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Mar 11, 2020 18:38
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https://www.youtube.com/watch?v=A_tB5QEwFc4 E: And yes, I know the last goats (on the Snoopy House) aren't pygmy goats, "don't @me" (as the kids say these days). I've already sent them a strongly-worded email expressing my dissatisfaction with this editorial choice and will update the thread as appropriate. Schadenboner fucked around with this message at 19:58 on May 1, 2020 |
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May 1, 2020 19:54
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I've posted about this channel before but they just keep coming up with new quality stuff. Here's a quick walk through some of the Apollo 12 lander's assembly code. There's also some discussion on late 1960's punch card version control and a description of a mental software hack that was used to bodge a serious hardware flaw in the adc. https://www.youtube.com/watch?v=-y37tXoBDx0
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May 13, 2020 14:35
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i watched this fascinating video about the search for magnetic monopoles as a fundamental, or at least i think it's about that https://www.youtube.com/watch?v=S3xH97Su-KY i don't really know much about theoretical or particle physics, so it is still really new to me, and i might have to look up more about it to really understand. to me, it never occurred to me that monopoles really ever could have existed. i'm not sure why arranging magnets and turning them so north north and south south point towards each other proves anything by being an emergent property. are you actually separating the poles? it doesn't seem like they'd have any relation at that point. you're just making an additional circumstance where two of the same poles turn towards each other. anyway, i guess i'm still unclear about that. fascinating nonetheless it's also amazing to think because they can make up logic gates that it has possibilities with computing. though, wouldn't it be impractical still because of how cold you would need to make it to have that work? Good Sphere fucked around with this message at 21:18 on May 29, 2020 |
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May 29, 2020 21:16
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I watched half of that and fell asleep coz it was 2am. iw ant to finish it I find it interestgin
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May 31, 2020 00:13
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https://www.youtube.com/watch?v=lF0uiRS8asc
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Jun 1, 2020 22:50
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