/sci/ - Science & Math

what do you think about michał heller?

>>11436323
haven't heard of him, kek.

>>11436320
why are you talking about ((physics))

>>11436320
>breaking down accepted 'ideas' that aren't correct like dark energy
pls explain to a retard that occasionally watches pop science documentaries

Is momentum conserved if the net external work is 0?

>>11436320
How does the E&M physics undergrads take differ from the E&M EE undegrads take?
As an EE undergrad, what can I do to get on par with physics undergrad knowledge of E&M?

>>11436335
/sci/ is a Jewish board. Kill yourself if you don't like it.

>>11438573
>/sci/ is jewish
ok, im sorry for interrupting you

>>11436320
I'm pretty confused on gravity, can anyone explain?

>>11437937
If net work done by external forces is zero, then total energy will be conserved. That is the total (scalar) of all forms present in the system. If net external impulse is zero, then total momentum (vector total!) will be conserved.

>>11436341
https://www.youtube.com/watch?v=oqgKXQM8FpU

>>11438800
>confused on gravity, anyone explain?
you're either a braindead or underage, or both. either way, you're not welcome

>>11436323
Based
>>11436329

>>11438812
https://www.goodreads.com/author/list/593609.Michel_Heller

>>11438800
the force pulling you down

>>11438846
lmao that's an oversimplification, what are you? in 4th grade?

>>11436320
what is the physcs of the coronavirus?

>>11438935
like will it spred? i'm rly scared :/
i live in egypt

>>11438935
>>11438936
>>>/cvg/
>>>/med/

>>11436320
What the fuck is quantum mechanics? like seriously, is it some kiked shit? or is it genuine science? can anyone respond? like an explanation or a good book to read about (Must not be made by a shill)

>>11438983
Posts made in bad faith are much less likely to get legitimate, helpful responses.

>>11438983
Basically momentum characterized by cyclical coordinates is quanrized, meaning possible values are discreet rather than continuous. There was a specific name for this formula but i forgot. Everything else is a consequence. It's just something observed in nature rather than something explainable which might be why you doubt it. Someone correct me if I'm wrong. As for books just look one up i guess.

A particles wave function at a certain point in time can be spread out over multiple dimensions, so can it be spread out over time as well? If it could in the way i mean, then couldn't the wave function collapse to another time than the observer? As an additional question , can a wave function only collapse to one of the superimposed wave functions that make it up, or can a wave function collapse to a point like wave function wherever the original is non zero? I also would like to ask if Heisenbergs uncertainty principle dictates the width of what a wave function can collapse to when disturbed.

So gravity can be modeled as mass bending space time, but could other mathematically similar forces be modeled that way as well, such as the electric force? If so, could any force be generalized as some bending of space time?

>>11438983
Basically: treat particles as waves, look at the energies and shapes that a given potential forces them into. For simple potentials like infinite square well the waves sit in sinosoidal stationary states much as a string fixed at two points vibrating. Because the well has a fixed width and the wave is totally confined within it, you get only certain allowed energies.
Because the SE is linear, more general states for a given potential can be broken down into a sum of stationary states with different time-dependent phase factors.
Fundamentally, the time-independent SE says: Here are the states of fixed Total Energies. Hopefully, these fixed-energy states form a well-behaved basis for vector space of all possible states on that potential (with some boundedness and normalization reqrs).
We can then define operators on these states. If an operator acts on a state and returns that state times a scalar, then the state is an eigenstate of that operator with the scalar its eigenvalue. All these eigenstates in turn form another basis of the vector space for that potential and BC's; I like to think of this as some infinite dimensional rotation of the basis states much as you could rotate your basis vectors in a normal 3D vector space.
>>11439709
okayish, but remember that for example a free particle has no such quantization; any quantization in elementary quantum mechanics comes from the potential and is not inherently present in the particle. In QFT you quantize the fields themselves and this becomes more fundamental.

>>11438873
a nondeterministic finite state machine