/sci/ - Science & Math » Thread #12788619

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Anonymous Thu 04 Mar 16:49:44 2021 No.12788619 View Reply Original Report

Quoted By: >>12788736 >>12788744 >>12789671 >>12789722 >>12792100 >>12794973 >>12795012 >>12795070 >>12796375

>energy curves spacetime
>gravitational field energy density of electron is so low we don’t need it in Dirac equation, use Minkowski metric instead
>Electric field energy density is singular as r->0 for electron
>NO NO NO ENERGY DOESNT BEND SPACETIME

Anonymous

Anonymous Thu 04 Mar 2021 17:23:09 No.12788736 Report

Quoted By: >>12789369

>>12788619
r->0 for an electron is not really possible. they are inherently fuzzy and squeezing them smaller and smaller requires more and more energy.

Anonymous

Anonymous Thu 04 Mar 2021 17:24:51 No.12788744 Report

Quoted By: >>12789214

>>12788619
>NO NO NO ENERGY DOESNT BEND SPACETIME
Who claims this? Even Ryder says that mass-energy tells space-time how to curve, whilst space-time tells mass-energy how to move. Clearly energy effects spacetime.

Anonymous

Anonymous Thu 04 Mar 2021 19:13:22 No.12789214 Report

Quoted By: >>12789237

>>12788744
So why don’t we use electrostatic energy contributions in the metric for the Dirac equation, rather than just assuming flat Spacetime? Clearly energy density is very high in the vicinity of the electron

Anonymous

Anonymous Thu 04 Mar 2021 19:20:25 No.12789237 Report

Quoted By: >>12789340

>>12789214
It's difficult and doesn't solve any problems. It's just unnecessary masochism

Anonymous

Anonymous Thu 04 Mar 2021 19:52:16 No.12789340 Report

Quoted By: >>12790358

>>12789237
It solves the gyromagnetic ratio.
Also
>it’s too difficult
Fuuuuucccckkkkk oooooofffffffffff

Anonymous

Anonymous Thu 04 Mar 2021 19:59:39 No.12789369 Report

Quoted By: >>12789688

>>12788736
>r->0 for an electron is not really possible. they are inherently fuzzy and squeezing them smaller and smaller requires more and more energy.
hmm this kinda reminds me of dark matter for some reason. Seems like physics change depending on some sense of scale.

Anonymous

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Anonymous Thu 04 Mar 2021 21:07:56 No.12789671 Report

Quoted By:

>>12788619
I struggle to disentangle energy density and mass, especially when one is fond of using electron volts as units.

oh the undecaying spin of the electron, the hawking radiation of black holes, what sort of crazy geometries and harmonics of relativistic spacetime rest near the heart of the electron

To the electron, may it be of no use to anybody

Anonymous

Anonymous Thu 04 Mar 2021 21:12:11 No.12789688 Report

Quoted By:

>>12789369
>Seems like physics change depending on some sense of scale.
this is true. coupling "constants" aren't constant at different energies

Anonymous

Anonymous Thu 04 Mar 2021 21:21:25 No.12789722 Report

Quoted By: >>12790358

>>12788619
Okay, you're right. But it complicates the equations a ton without providing any meaningful increase in accuracy. Keep physics simple.

Anonymous

Anonymous Thu 04 Mar 2021 23:56:09 No.12790358 Report

Quoted By: >>12794897

>>12789722
See >>12789340
People just automatically assume the lande-g factor is 2.000001 but this proves it. That’s a big deal. If you’re dealing with something as complicated as QED then why not include everything you can? Fuck keeping it simple. We’ve made it to QED. I want the right answer

Anonymous

Anonymous Fri 05 Mar 2021 09:47:45 No.12792100 Report

Quoted By: >>12792648

>>12788619
How can I write code to generate pic-related?

Anonymous

Anonymous Fri 05 Mar 2021 14:05:43 No.12792648 Report

Quoted By: >>12794517

>>12792100
Read Merzbacher. You need legendre polynomials and Bessel functions iirc. Use mathematica, it’ll be easier

Anonymous

Anonymous Fri 05 Mar 2021 21:43:27 No.12794517 Report

Quoted By: >>12794943

>>12792648
Shoot. Seriously? You mean I can't just the equation into some graphing script?

Anonymous

Anonymous Fri 05 Mar 2021 23:07:04 No.12794897 Report

Quoted By: >>12795083

>>12790358
gravity is extremely weak, to the point that it is insignificant especially at small scales where it is drowned by much stronger interactions and measurement uncertainties

Anonymous

Anonymous Fri 05 Mar 2021 23:21:51 No.12794943 Report

Quoted By: >>12795043

>>12794517
you absolutely can, it's just a heatmap based on the probability density. but the equation involves spherical harmonics and laguerre polynomials, so you need some software which can calculate them for you if you don't want to work them out by hand (you don't), mathematica literally has functions that spit out the answer

Anonymous

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Anonymous Fri 05 Mar 2021 23:32:09 No.12794973 Report

Quoted By: >>12796364

>>12788619
ENERGY IS ANYTHING THAT WEIGHS ON A FUCKING SCALE

Anonymous

Anonymous Fri 05 Mar 2021 23:45:18 No.12795012 Report

Quoted By: >>12795844

>>12788619

Fortunately, classical unified theory doesn't have that issue

Anonymous

Anonymous Fri 05 Mar 2021 23:56:59 No.12795043 Report

Quoted By:

>>12794943
Okay, I will try to get it working later.

Anonymous

Anonymous Sat 06 Mar 2021 00:02:40 No.12795070 Report

Quoted By:

>>12788619
this all sounds like some heavy shit. how do these different electron "cloud" placements result in different colors being emitted????

Anonymous

Anonymous Sat 06 Mar 2021 00:06:05 No.12795083 Report

Quoted By: >>12795145

>>12794897
Even if it is difficult we should still try to figure it out exactly. Imagine if /sci/ proposed and carried out a useful experiment on gravity

Anonymous

Anonymous Sat 06 Mar 2021 00:22:01 No.12795145 Report

Quoted By: >>12795847

>>12795083
it's not so much that it's difficult, it's that it's useless. what is the point of using gravity to determine precision up to the 25th decimal when the best detectors don't allow you to measure precisely beyond 5 decimals and when the order of calculations you used in qed mean that your theoretical prediction is only accurate to the 10th decimal.
it's like measuring a specific grain of sand and comparing to the size of the earth: maybe you can measure the grain with precision but that individual grain won't matter when sizing up a planet

Anonymous

Anonymous Sat 06 Mar 2021 04:07:12 No.12795844 Report

Quoted By:

>>12795012
Elaborate

Anonymous

Anonymous Sat 06 Mar 2021 04:08:37 No.12795847 Report

Quoted By: >>12797321

>>12795145
>determining Landé g factor analytically is useless
>>>/g/

Anonymous

Anonymous Sat 06 Mar 2021 07:25:05 No.12796364 Report

Quoted By:

>>12794973
DESU

Anonymous

Anonymous Sat 06 Mar 2021 07:31:41 No.12796375 Report

Quoted By:

>>12788619
>>energy curves spacetime
You failed physics in high school didn't you, OP?

Anonymous

Anonymous Sat 06 Mar 2021 15:06:25 No.12797321 Report

Quoted By:

>>12795847
can you read?

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