Editing Talk:2034: Equations
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He's nerd sniping us all.. ([[Special:Contributions/162.158.167.120|162.158.167.120]] 03:30, 18 August 2018 (UTC)) | He's nerd sniping us all.. ([[Special:Contributions/162.158.167.120|162.158.167.120]] 03:30, 18 August 2018 (UTC)) | ||
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Should we add a column with examples of similar correct equations from the respective fields? Sebastian --[[Special:Contributions/172.68.110.4|172.68.110.4]] 09:33, 17 August 2018 (UTC) | Should we add a column with examples of similar correct equations from the respective fields? Sebastian --[[Special:Contributions/172.68.110.4|172.68.110.4]] 09:33, 17 August 2018 (UTC) | ||
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:Looks like it. But I don't think that letter exists even. --[[Special:Contributions/162.158.91.221|162.158.91.221]] 07:28, 17 August 2018 (UTC) | :Looks like it. But I don't think that letter exists even. --[[Special:Contributions/162.158.91.221|162.158.91.221]] 07:28, 17 August 2018 (UTC) | ||
:Is this equation a sort of nod to a Theory Of Everything which unifies quantum mechanics and gravity... H-hat (a Hamiltonian, which in quantum mechanics describes the total energy of a system, and usually runs in to problems describing large systems - such as the entire universe - where gravity or spacetime curvature effects matter) *minus* u0 (the relativistic mass of the whole system at time zero ie. the big bang) gives 0 (no energy everywhere always). Since mass is energy (e=mc^2) and mass is also the sole cause of gravity the two theories cleanly collapse together when mass is zero, and figuring out how to extend the theory to other less clean points on the mass axis is obviously a job for less profound physics? I've no ideas to explain the cedilla. [[Special:Contributions/141.101.98.28|141.101.98.28]] 08:49, 17 August 2018 (UTC) | :Is this equation a sort of nod to a Theory Of Everything which unifies quantum mechanics and gravity... H-hat (a Hamiltonian, which in quantum mechanics describes the total energy of a system, and usually runs in to problems describing large systems - such as the entire universe - where gravity or spacetime curvature effects matter) *minus* u0 (the relativistic mass of the whole system at time zero ie. the big bang) gives 0 (no energy everywhere always). Since mass is energy (e=mc^2) and mass is also the sole cause of gravity the two theories cleanly collapse together when mass is zero, and figuring out how to extend the theory to other less clean points on the mass axis is obviously a job for less profound physics? I've no ideas to explain the cedilla. [[Special:Contributions/141.101.98.28|141.101.98.28]] 08:49, 17 August 2018 (UTC) | ||
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:It looks to me a little like a parody of the {{w|Wheeler-DeWitt_equation#Hamiltonian_constraint|Wheeler-DeWitt equation}} which (in theory) describes a wavefunction for the entire Universe. [[User:Exxi|Exxi]] ([[User talk:Exxi|talk]]) 09:06, 17 August 2018 (UTC)一 | :It looks to me a little like a parody of the {{w|Wheeler-DeWitt_equation#Hamiltonian_constraint|Wheeler-DeWitt equation}} which (in theory) describes a wavefunction for the entire Universe. [[User:Exxi|Exxi]] ([[User talk:Exxi|talk]]) 09:06, 17 August 2018 (UTC)一 | ||
: I'm just thrilled someone found the right character for it. I spent 20 minutes looking for the right u symbol without any luck at all. {{unsigned ip|172.68.143.132}} | : I'm just thrilled someone found the right character for it. I spent 20 minutes looking for the right u symbol without any luck at all. {{unsigned ip|172.68.143.132}} | ||
Is this poking fun at equation-filled blackboards in movies and cartoons? {{unsigned ip|172.68.254.42}} | Is this poking fun at equation-filled blackboards in movies and cartoons? {{unsigned ip|172.68.254.42}} | ||
:Doesn't seem like it. These equations actually do look like the kinds of equations you would see in these fields. On blackboards in movies you tend to get equations that are pure nonsense. {{unsigned ip|172.68.143.132}} | :Doesn't seem like it. These equations actually do look like the kinds of equations you would see in these fields. On blackboards in movies you tend to get equations that are pure nonsense. {{unsigned ip|172.68.143.132}} | ||
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I think this may also be a reference to Feynman's unworldliness equation, http://www.feynmanlectures.caltech.edu/II_25.html#Ch25-S6 . [[Special:Contributions/108.162.219.220|108.162.219.220]] 17:02, 17 August 2018 (UTC) | I think this may also be a reference to Feynman's unworldliness equation, http://www.feynmanlectures.caltech.edu/II_25.html#Ch25-S6 . [[Special:Contributions/108.162.219.220|108.162.219.220]] 17:02, 17 August 2018 (UTC) | ||
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;Table layout at the explanation | ;Table layout at the explanation | ||
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:::Infinite is NO number! --[[User:Dgbrt|Dgbrt]] ([[User talk:Dgbrt|talk]]) 17:33, 17 August 2018 (UTC) | :::Infinite is NO number! --[[User:Dgbrt|Dgbrt]] ([[User talk:Dgbrt|talk]]) 17:33, 17 August 2018 (UTC) | ||
::::<math>\infty-\infty</math> is indeterminate, just like 0/0 is in standard arithmetic. That's cool, because we don't need the value of <math>\infty-\infty</math> to calculate the above expression. Have a look at the [https://en.wikipedia.org/wiki/Extended_real_number_line extended real number line]. --[[User:Ycthiognass|Ycthiognass]] ([[User talk:Ycthiognass|talk]]) 06:18, 20 August 2018 (UTC) | ::::<math>\infty-\infty</math> is indeterminate, just like 0/0 is in standard arithmetic. That's cool, because we don't need the value of <math>\infty-\infty</math> to calculate the above expression. Have a look at the [https://en.wikipedia.org/wiki/Extended_real_number_line extended real number line]. --[[User:Ycthiognass|Ycthiognass]] ([[User talk:Ycthiognass|talk]]) 06:18, 20 August 2018 (UTC) | ||
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Completely separate from the above, it's probably worth noting that i is also a constant, and as such has the same misconception as <math>\pi</math>. Computer scientists are happy using i for loops/summations, but mathematicians prefer using n. Based off that, it's probably another misconception/joke that n is treated as a constant, while known-constants are used as variables. [[Special:Contributions/108.162.246.149|108.162.246.149]] 17:28, 17 August 2018 (UTC) | Completely separate from the above, it's probably worth noting that i is also a constant, and as such has the same misconception as <math>\pi</math>. Computer scientists are happy using i for loops/summations, but mathematicians prefer using n. Based off that, it's probably another misconception/joke that n is treated as a constant, while known-constants are used as variables. [[Special:Contributions/108.162.246.149|108.162.246.149]] 17:28, 17 August 2018 (UTC) | ||
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Is it worth mentioning Euler's identity in the explanation? As a non-mathematician, the presence of e, pi, and i together in one equation looks "Euler's identity-ish" while clearly not being it. [[Special:Contributions/162.158.74.39|162.158.74.39]] 22:20, 19 August 2018 (UTC) | Is it worth mentioning Euler's identity in the explanation? As a non-mathematician, the presence of e, pi, and i together in one equation looks "Euler's identity-ish" while clearly not being it. [[Special:Contributions/162.158.74.39|162.158.74.39]] 22:20, 19 August 2018 (UTC) | ||
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;Chemistry equation | ;Chemistry equation | ||
OH should have a charge symbol: OH<sup>-</sup>. The actual reaction would be: | OH should have a charge symbol: OH<sup>-</sup>. The actual reaction would be: | ||
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The methyl group can dissolve in water, and this is presumably happening in water, so this equation can work, just not the one provided by Randell. Reacting longer alkanes with bases is a way to make soaps, but the methyl group would be too reactive to be used this way. [[User:Nutster|Nutster]] ([[User talk:Nutster|talk]]) 13:13, 17 August 2018 (UTC) | The methyl group can dissolve in water, and this is presumably happening in water, so this equation can work, just not the one provided by Randell. Reacting longer alkanes with bases is a way to make soaps, but the methyl group would be too reactive to be used this way. [[User:Nutster|Nutster]] ([[User talk:Nutster|talk]]) 13:13, 17 August 2018 (UTC) | ||
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;Fluid Dynamics equation | ;Fluid Dynamics equation | ||
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I changed a "p" to a Greek "rho". [[User:Redbelly98|Redbelly98]] ([[User talk:Redbelly98|talk]]) 00:40, 18 August 2018 (UTC) | I changed a "p" to a Greek "rho". [[User:Redbelly98|Redbelly98]] ([[User talk:Redbelly98|talk]]) 00:40, 18 August 2018 (UTC) | ||
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;Gauge theory equation | ;Gauge theory equation | ||
<s>I think the transcript is missing a left superscript 0 before the turned xi. [[Special:Contributions/172.68.226.16|172.68.226.16]] 16:50, 17 August 2018 (UTC)</s> Ah no, sorry. False alarm. It's just that Randall writes the xi with a funny tail. The same tail is on the non-turned xi earlier. [[Special:Contributions/172.68.226.10|172.68.226.10]] 16:52, 17 August 2018 (UTC) | <s>I think the transcript is missing a left superscript 0 before the turned xi. [[Special:Contributions/172.68.226.16|172.68.226.16]] 16:50, 17 August 2018 (UTC)</s> Ah no, sorry. False alarm. It's just that Randall writes the xi with a funny tail. The same tail is on the non-turned xi earlier. [[Special:Contributions/172.68.226.10|172.68.226.10]] 16:52, 17 August 2018 (UTC) | ||
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Could this be a reference to Feynman's jab at hiding complexity underneath symbol definitions to achieve 'simplicity'? See the Feynman Lectures on Physics, Volume II, Chapter 25, Section 6. [[Special:Contributions/162.158.150.100|162.158.150.100]] 09:19, 19 August 2018 (UTC)WhoIsJack | Could this be a reference to Feynman's jab at hiding complexity underneath symbol definitions to achieve 'simplicity'? See the Feynman Lectures on Physics, Volume II, Chapter 25, Section 6. [[Special:Contributions/162.158.150.100|162.158.150.100]] 09:19, 19 August 2018 (UTC)WhoIsJack | ||
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;Explanations in general | ;Explanations in general | ||
“Nobody knows if Randall references a horse here” - what?! Because the expression lacks an equal sign; doesn’t represent an equality, it might mean Randall is referencing equines, aka horses?! Is this vandalism, an attempt at a joke, or what? This explanation clearly still needs quite a bit of work! [[User:PotatoGod|PotatoGod]] ([[User talk:PotatoGod|talk]]) 20:14, 17 August 2018 (UTC) | “Nobody knows if Randall references a horse here” - what?! Because the expression lacks an equal sign; doesn’t represent an equality, it might mean Randall is referencing equines, aka horses?! Is this vandalism, an attempt at a joke, or what? This explanation clearly still needs quite a bit of work! [[User:PotatoGod|PotatoGod]] ([[User talk:PotatoGod|talk]]) 20:14, 17 August 2018 (UTC) | ||
:I've put a header on top here. It's not vandalism but every explanation looks still highly unscientific. I've gave real sources to the most topics at the beginning but the following explanations are mostly bad. --[[User:Dgbrt|Dgbrt]] ([[User talk:Dgbrt|talk]]) 20:22, 17 August 2018 (UTC) | :I've put a header on top here. It's not vandalism but every explanation looks still highly unscientific. I've gave real sources to the most topics at the beginning but the following explanations are mostly bad. --[[User:Dgbrt|Dgbrt]] ([[User talk:Dgbrt|talk]]) 20:22, 17 August 2018 (UTC) | ||
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;Kinematics equations | ;Kinematics equations | ||
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As someone unfamiliar with scientific equations, I took the joke to be that Scientific Equations Are Complicated, until you get to the "truly deep" part, in which case they're pretty simple. As much as I appreciate the description of the equations, is anyone gonna explain whether my take on the joke is plausible? Or what it is if I'm wrong? [[Special:Contributions/108.162.219.214|108.162.219.214]] 15:52, 20 August 2018 (UTC) | As someone unfamiliar with scientific equations, I took the joke to be that Scientific Equations Are Complicated, until you get to the "truly deep" part, in which case they're pretty simple. As much as I appreciate the description of the equations, is anyone gonna explain whether my take on the joke is plausible? Or what it is if I'm wrong? [[Special:Contributions/108.162.219.214|108.162.219.214]] 15:52, 20 August 2018 (UTC) | ||
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Am I the only one seeing a possible pun in SU(2)U(1)xSU(U(2))? I can't figure out the whole thing but SU(U(2)) sure looks like it reads "sue you too". | Am I the only one seeing a possible pun in SU(2)U(1)xSU(U(2))? I can't figure out the whole thing but SU(U(2)) sure looks like it reads "sue you too". | ||
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