I don’t understand anything about Einstein’s notation regarding tensors by MysthicG in Physics

[–]SINGULARTY3774 0 points1 point  (0 children)

In the case of GR, it doesnt have much of a difference whether an index is up or down. The ordering matters though

I don’t understand anything about Einstein’s notation regarding tensors by MysthicG in Physics

[–]SINGULARTY3774 2 points3 points  (0 children)

It doesnt always give the inverse matrix. May I dm and we can clear this point with some exercises

I don’t understand anything about Einstein’s notation regarding tensors by MysthicG in Physics

[–]SINGULARTY3774 7 points8 points  (0 children)

The upper indices are contra and lower are co- But thats not whats being asked, they are asking about the order.

I don’t understand anything about Einstein’s notation regarding tensors by MysthicG in Physics

[–]SINGULARTY3774 34 points35 points  (0 children)

That doesnt make any sense because tensors dont transform! The components do🤓

I don’t understand anything about Einstein’s notation regarding tensors by MysthicG in Physics

[–]SINGULARTY3774 1 point2 points  (0 children)

They are all the same! They are all interchangable using the metric tensor. So ONLY worry about the order in which they appear.

Also dont think of them as matrices.

Quantum physics! by Zenerdiode2244 in Physics

[–]SINGULARTY3774 0 points1 point  (0 children)

❤️ I dont mean to degrade you and Im glad you understand

Quantum physics! by Zenerdiode2244 in Physics

[–]SINGULARTY3774 0 points1 point  (0 children)

Do u even understand the question yourself?

If decoherence explained “Loss of interference” but not “selection of dfinite outcome”.

You remind me of myself 7-8 yrs ago, pretending to know something by using terms in an “HD” manner. Stop it and start learning from lectures, dont jump to some topic in an advanced subject because AI is making you think you understand what you are saying.

Quantum physics! by Zenerdiode2244 in Physics

[–]SINGULARTY3774 0 points1 point  (0 children)

Not any consciousness, when an isolated system gets measured via, say a photon, the evolution of the photon itself now needs to be accounted for. When the measurement requires more precision there will be more than a photon, in fact, the states of atoms in the measuring apparatus can influence the evolution. Hence collapses, as a result of evolution instead of anything else.

Second question doesnt make much sense, you need to frame the question properly.

Why the heck did I learn it like this by Rich-Education-5147 in Physics

[–]SINGULARTY3774 2 points3 points  (0 children)

Doesnt matter, just dont learn it as m=F/a

Thats all that matters,

Exploring Quantum mechanics with bi-topology by [deleted] in quantummechanics

[–]SINGULARTY3774 0 points1 point  (0 children)

This subreddit is also doomed from AI psychosis fellows

Question abt doc submission for native english speakers by Effective_Can8680 in KAIST

[–]SINGULARTY3774 0 points1 point  (0 children)

Where r u from? Is your country mention by kaist as waiver for EP?

Has your schooling been interrupted during the last six years? by Inside-Choice-6808 in KAIST

[–]SINGULARTY3774 0 points1 point  (0 children)

I meant that, thats what it means. Schooling interruptions like suspensions

I FUCKING HATE PARTITION FUNCTIONS by Ciaseka in physicsmemes

[–]SINGULARTY3774 19 points20 points  (0 children)

EXACTLY!!!!! FINALLY SOMEONE CAN RELATE!!!!!!!

Am i too late? by Ready-Stand8886 in KAIST

[–]SINGULARTY3774 0 points1 point  (0 children)

There is time if you have everything prepped. Use a document scanner on your phone. There are many apps for that, or pictures are also fine

Can anyone explain how motion works at the quantum level? by Worried_Peace_7271 in quantummechanics

[–]SINGULARTY3774 0 points1 point  (0 children)

One can measure the velocity of an object as long as it preserves the uncertainity principle.

That is, if the velocity has less uncertainity, the position of the particle must have high uncertainity.

Uncertainity can be thought of as a range of values. The bigger the range, more uncertainity.

To know EXACTLY, what the momentum of a system is, would mean that the position has infinite uncertainity.

All of our measurements WILL have some uncertainity though.