>>7813580 Minsky was probably cryopreserved. He was part of the scientific advisory board for Alcor the cryonics company. I say probably cryopreserved because supposedly there was some issue with Alcor getting access to his body.
Can anyone point out to me where in the work I did in pic related is wrong? It's a thermo problem.
"A rigid, well-insulated gas cylinder initially contains N_o moles of an ideal gas at a temperature T_o and pressure P_o. A venting valve is opened and the gas is pumped out of the tank. Derive an expression for the instantaneous temperature of the gas as a function of the number of moles remaining in the tank. The heat capacity at constant volume of the gas is independent of temperature.
>>7813541 well for one, no one uses CRTs anymore. Second at those distances the magnetic field would be really fucking weak and liable to being drown out by other environmental magnetic fields.
That's not to say you can't mess with the brain using magnetic fields though. But current transcranial magnetic stimulation setups need precise positioning and relatively high magnetic fields to have any effect. https://www.youtube.com/watch?v=FMR_T0mM7Pc
>>7813541 The magnetic field would probably need to be so powerful your electricity bill would be 2k a month and it'd probably just give you a headache or make you nauseated like most other kinds of brainwave-matching EM waves.
Might work, but not really workable if the idea is to brain-wash people into buying a new brainwashing television set every 3 months.
>tfw can't do Hilbert style proofs in propositional logic Kill me now.
Can someone give me some tips? How do I "see" what sort of wffs to plug into the schema when doing a proof? Here's an example (> for if..then): Prove that A > A 1. A > ((A > A) > A) /// instance of H1 2. (A > ((A > A) > A)) > ((A > (A > A)) > (A > A)) /// instance of H2
I'm not gonna type the rest of the proof, but you get the idea. How do I figure out that I need to substitute (A > A)... Comment too long. Click here to view the full text.
>>7813385 You can just pirate it. Most specialized textbooks are also available in draft form (i.e. grammatical errors, formatting errors) and free. If you want a hard copy, you can just go get on in your library. The price of those books are high because no one want to buy it except for a few autists and libraries.
>>7813313 how "pure"? if you go off the deep end (theoretical physics and pure math) you don't have much chance out of academia. if you accept applied math or applied physics you can do tons of shit from finance to modelling to who knows
>>7813178 James Burke's "Connections". Old but absolutely rocks. Every single person in STEM should watch it and reflect on the first and last episodes. It's all over YouTube. There's a second and third series but they're not nearly as interesting as the first.
Goodstein's "The Mechanical Universe". It's a basic undergraduate physics course with animated illustrations of the concepts. The CG is basic but was cutting edge for its time. Not on Youtube but you can find it... Comment too long. Click here to view the full text.
Can anyone recommend a good Trigonometry book? I'm interested in learning deeper and more advanced Trig than the surface stuff covered in Pre-Calc and want a very strong foundation in it before I go into Calc II.
>>7813110 Just... memorize the unit circle and figure out the basic identities like sin^2 + cos^2 =1 or derive double angle formulas from e^ix = cosx + isinx... Even if you don't know any of this yet with what I just told you and your existing enthusiasm you'll be done in a week. It's cake and most people learn it in panic mode in calc or intro physics anyway.
>>7813073 I have done a similar algorithm in the past.
I assigned a color for each digit (0,1,2,...,9) (so it worked for up to 10 colors ...)
Tested all permutations (some optimization allowed to only test reasonable permutations).
In the case of a 2x2 matrix and 3 colors it worked like this 0000 Test: "fail, add one in base 3" 0001 Test "fail, add one in base 3" 0002 Test "fail, add one in base 3" 0010 Test "fail, add one in base 3" .... 2222 Test... Comment too long. Click here to view the full text.
Why is it food cost nearly twice as much now as it did a decade ago but we're producing twice as much food? This isn't how supply and demand works. GMO promised us cheaper food but is it making food more expensive?
>>7812947 Wait for the inevitable 21st century oil shock in the other direction, as in over $200 a barrel or something. We eat oil today, bad planning. All it takes is a few Allah Ackbars over there in the ME, a Russian bear gone berserk, a rogue China...the possibilities are endless.
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