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05:01
Is there some physical quantity similar to temperature or some operator applied to temperature that can quantify the phenomenological experience of how warm something feels? For example, a measure that could differentiate between the warmth of two hands in the same bowl of water, one of which had previously been in hotter water and the other of which had previously been in colder water?
 
4 hours later…
09:04
How warm something feels is gonna involve both the heat and coldness receptors in your body, as well as how they are processed
So not quite something physical
Famously drinking alcohol makes you feel warmer without actually warming you, which I'm not sure will be involved in a physical operator
09:21
"In the context of both STR and GTR, it has been shown [3,6,7,10,11] that only the gravitational equation-of-motion field is geodesic and hence corresponds to a group or G-structure on spacetime, namely, the projective structure of spacetime. The other known equation-of-motion fields (see Eq. (23)), those corresponding to electromagnetic charge-to-mass ratios Q/m, are all non-polynomial in the 3-velocity variables, and hence cannot correspond to G-structures"
whaaa
 
5 hours later…
14:12
I need some robotic assistants
@Bohemianrelativist The Schwinger effect is the production of electron-positron pairs from a vacuum by an electric field. This paper describes the creation of electron-hole pairs from the valence band of graphene by an electric field. So it is not reporting an observation of the Schwinger effect - just of an effect analogous to the Schwinger effect.
So the pure form means the production of electron-positron pairs in a vacuum.
Calling the production of electron-hole pairs in graphene the Schwinger effect is stretching things a bit, but the process in graphene is described by a similar mathematical model to the Schwinger effect so I suppose they can get away with it.
 
1 hour later…
Jim
Jim
15:18
I'm getting really tired of people with personal theories who do nothing but subscribe to the principle of Occam's Beard Hair Growth Tonic
15:52
(removed hair)
16:11
Occam's razor is a heuristic, it is not a fundamental principle of epistemology
Is pragmatism a fundamental principle?
16:43
Also not
I'm afraid when it comes to metaphysics, there is no fundamental principle
17:28
if i combined 3 phase to 1 phase, is the proper equation for voltage vl=sqrt(3)*(v1+v2+v3)/3
17:44
asuuming they are spaced 120° apart and it is slightly unbalanced
$V_l=\sqrt(3)*\frac{(V_1+V_2+V_3)},{3}$
Jim
Jim
18:29
@Slereah true. But if there's no testable difference between their theory and accepted science, Imma stick with the latter. Heuristic or no
@Jim If your problem with such theories is that they have no difference, then you haven't seen a lot of bad personal theories :p
Jim
Jim
@Slereah I have, but felt those didn't merit mention
Also on a more sinister note
The actual mainstream theories are full of unnecessary objects in them
but sometimes such things are just nice to have to make things more tractable
Jim
Jim
there's a fine line between unnecessary and unexplained
Why do you need something explained, are you in search of the METAPHYSICAL TRUTH
Jim
Jim
18:33
lol
God's own ordained physical laws
The SU(3) symmetry represents the Holy Trinity
Jim
Jim
Relevant side question: I want to point one of those users to the crackpot index: https://math.ucr.edu/home/baez/crackpot.html
Too toxic? The words they've said in the comments alone earn a positive score. It's fairly telling
depends on how you phrase it :P
"You're a crackpot and here's proof" is borderline insulting, something like "Take a step back and perhaps consider how you're coming across to other people; here's a list of things that generally discourage physicists from taking you seriously" less necessarily so
Jim
Jim
nice, how about I post here what I want to type. You tell me if it's acceptable. I think I'm in between those two
Check out this link and calculate your score based on what you've written here. From what you said in the comments, I calculate your theory has a score of about 25 (certainly not the worst I've seen. I recently saw one with a score of 155). Please note that we on this site only like to talk about theories that have negative scores.
I mean, it's not exactly site policy to apply Baez' scale
it's just fairly well-correlated with what we consider non-mainstream
Jim
Jim
18:41
true but all stuff we like has a negative score. Correlation of 1
Here is my theory
Jim
Jim
see, that theory rates at least a 45
I mean...that's not a theory, you just drew a bunch of circles and wrote profound-sounding stuff into them :P
@ACuriousMind that was considered good enough in the first century
sure
one of the first theories about the world recorded in Greece was "everything is water"
18:45
It ran into some difficulty when something that wasn't water was discovered
There is something inherently silly in having a theory where the whole world is the same substance and then using a specific example as that substance
If everything is made of the same stuff, you might as well say that everything is cake
to be fair a lot of these mystic theories make a lot more intuitive "sense" than what actually appears to be going on :P
by the transitive property
19:29
ACM, does QoGS also discuss [this](https://physics.stackexchange.com/a/106611/259324)?
If you don't want to open the link, that's an answer about extended Lagrangian and how EL/Hamilton's equation derived from it.
I think the answer might be positive as there is a reference called "Quantization of fields with constraints".
The extended Lagrangian method is described in Dmitriy M. Gitman, Igor V. Tyutin - Quantization of fields with constraints
Yeah, that's at the end of the answer in the link
a good choice
I enjoyed that book
I haven't ever heard of this in Classical Mechanics
It is unfortunate
But it's not really necessary, really
It's more of a pedagogical tool
the $v$ variable can be integrated out
19:34
A lot of things are not necessary, indeed
But CM is just fun and I like having something new to think about
There just one CM book I have to look up, though
Moretti's book might have it
He wrote a wonderful book about Analytical Mechanics for those who don't know
It seems the answer is negative

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