Nazmul Hasan Shipon

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Nazmul Hasan Shipon

Feb 1, 2022 08:22

@JohnRennie Thank you sir.

Nazmul Hasan Shipon

Feb 1, 2022 08:20

@JohnRennie Sir, is decoherence somehow related to Pauli's Exclusion Principle?

Nazmul Hasan Shipon

Feb 1, 2022 08:18

@JohnRennie It's clear sir.

Nazmul Hasan Shipon

Feb 1, 2022 08:18

@JohnRennie So, Erwin Schrödinger and Einstein were against this randomness and Einstein said, "God doesn't play dice"?

Nazmul Hasan Shipon

Feb 1, 2022 08:12

@JohnRennie Yes sir, amazing.

Nazmul Hasan Shipon

Feb 1, 2022 08:06

OK, then?

Nazmul Hasan Shipon

Feb 1, 2022 07:58

Hello, I've a short question.
I was told that quantum jumps/state transitions of an electron are random events. But I also have learned when a photon strikes an atom, a quantum jump occurs between energy levels. (And somewhere I also read that they would instantly emit a photons after absorbing a photon corresponding to their difference in energy level and be back to that original energy level). Then how come these be random? Won't an electron jump between states when it would be struck by a photon?

Nazmul Hasan Shipon

Sep 8, 2021 17:11

@JohnRennie okay :) .

Nazmul Hasan Shipon

Sep 8, 2021 17:09

okay.

Nazmul Hasan Shipon

Sep 8, 2021 17:09

so in the reversed case if V_2 > V_1, I_2 direction would be unchanged or we are not sure?

Nazmul Hasan Shipon

Sep 8, 2021 17:08

@JohnRennie oh yes, I was talking about the reversed case.

Nazmul Hasan Shipon

Sep 8, 2021 17:07

@JohnRennie here downwards

Nazmul Hasan Shipon

Sep 8, 2021 17:07

@JohnRennie here it point upwards

Nazmul Hasan Shipon

Sep 8, 2021 17:06

@JohnRennie but why should it point in the same direction?

Nazmul Hasan Shipon

Sep 8, 2021 17:05

yes

Nazmul Hasan Shipon

Sep 8, 2021 17:04

@JohnRennie why is that?

Nazmul Hasan Shipon

Sep 8, 2021 17:01

@JohnRennie according to this picture

Nazmul Hasan Shipon

Sep 8, 2021 17:01

@JohnRennie so if V_2 > V_1, I_2 direction would be unchanged.

Nazmul Hasan Shipon

Sep 8, 2021 16:57

@JohnRennie but I was wondering if that would affect the current of V_1 too.

Nazmul Hasan Shipon

Sep 8, 2021 16:55

@JohnRennie yes

Nazmul Hasan Shipon

Sep 8, 2021 16:51

@JohnRennie

$Mathematics$ JEE Maths Zone

Related Rooms: [Physics](chat.stackexchange.com/rooms/54160/p...

Nazmul Hasan Shipon

Jan 6, 2022 19:26

@Anthony I checked Z Library before, it's not in there. Infact, I also downloaded my version from Z Library.

Nazmul Hasan Shipon

Jan 6, 2022 16:03

I attached a snapshot of this with my message. I was hoping they had fixed it in their latter editions.

Nazmul Hasan Shipon

Jan 6, 2022 16:03

Nazmul Hasan Shipon

Jan 6, 2022 16:01

Can anyone help me with the PDF of Wiley's Mathematics for JEE (Main & Advanced): Trigonometry, Vector Algebra, Probability, Vol 2, 2018 or 2019 or 2020 edition? I actually have a PDF of this book, which I came to see very available on the internet. But there's a problem with the version I have (probably my version is before 2017), the problem is in Vector Multiplication chapter, there's quite a lot symbol missing and sometimes uses an ambiguous "x" symbol in the place of dot symbol.

Nazmul Hasan Shipon

Oct 22, 2021 08:57

Can anyone please give me the 2021 JEE Advance question and solution PDF? Plenty of them available on the internet but can't get access due to not living in India (because I need to create an account with Indian phone number).

$Mathematics$ Teresa Lisbon, senior agent, CBI

For talking to Teresa Lisbon, about anything but primarily mat...

Nazmul Hasan Shipon

Oct 30, 2021 18:24

@TeresaLisbon get well soon.

Nazmul Hasan Shipon

Oct 5, 2021 06:02

@TeresaLisbon Hi, it's okay ma'am. How are you doing?

Nazmul Hasan Shipon

Sep 30, 2021 08:45

Hi ma'am @TeresaLisbon.

Nazmul Hasan Shipon

Sep 14, 2021 10:31

@JitendraSingh Sure. I do when I desperately need help. But mostly I can do on my own but sometimes a little help may be needed to push an idea, that's when I come here.

Nazmul Hasan Shipon

Sep 14, 2021 10:29

@TeresaLisbon Thank you. What are the causes of this up-down-up-down on your schedule?

Nazmul Hasan Shipon

Sep 14, 2021 10:05

@TeresaLisbon You're so hard to get.

Nazmul Hasan Shipon

Sep 14, 2021 10:05

I am having hard times as my final exam of college is knocking at the door.

Nazmul Hasan Shipon

Sep 14, 2021 10:04

Hi ma'am @TeresaLisbon. How are you?

$Mathematics$ JEE Stuff

For students preparing for the JEE to get help and rant in here

Nazmul Hasan Shipon

Oct 29, 2021 19:26

Does anybody have JEE 2021 Advance solve papers? Quite a lot is available on the internet but can't download any since it requires an Indian account ownership.

Nazmul Hasan Shipon

Oct 1, 2021 07:17

@Anthony thanks bro.

Nazmul Hasan Shipon

Sep 30, 2021 19:04

can anyone help me with a good pdf of cengage learning's JEE Advance Trigonometry book by G Tewani?

$Mathematics$ Mathematics

Associated with Math.SE; for both general discussion & math qu...

Nazmul Hasan Shipon

Oct 21, 2021 18:54

@Koro It's actually from my question where I want to understand how equation (i) (which is the general equation of conic) represent a circle. So, as an ellipse become a circle when e=0, if I put e=0 in that ellipse equation I would get 0/0. Then my question is how does that general equation represent a circle?

Nazmul Hasan Shipon

Oct 21, 2021 18:08

@TedShifrin, would you like you have a look at my question?

Nazmul Hasan Shipon

Oct 21, 2021 16:45

If I have an equation $y=x \times a/x$, is it valid for x=0? or in other words, for all values of x.

Nazmul Hasan Shipon

Sep 12, 2021 19:19

Can anyone please tell me how he got AH=2RcosA and HP=2RcosBcosC in this answer?

$Mathematics$ Tutor Session

Nazmul Hasan Shipon

Sep 13, 2021 19:45

@Buraian, would you please look for me in your coordinate geometry books if there is the proof of the formula presented in the question?

Nazmul Hasan Shipon

Sep 13, 2021 17:54

@Buraian, but he said after using some trigonometry.

Nazmul Hasan Shipon

Sep 13, 2021 15:56

@Buraian okay

Nazmul Hasan Shipon

Sep 13, 2021 15:56

Can you tell me how he got AH=2RcosA and HP=2RcosBcosC ?

Nazmul Hasan Shipon

Sep 13, 2021 15:55

In this answer

Nazmul Hasan Shipon

Sep 13, 2021 15:55

A: How to calculate the coordinates of a triangle's orthocentre?

Here $A\equiv (x_1,y_1)$,$B\equiv (x_2,y_2)$,$C\equiv (x_3,y_3)$. I'll use the usual notation for $a,b,c,R$ and $A,B,C$. Using simple trigonometry, $BP=c\cos B$, $PC=b\cos C\implies\dfrac{BP}{PC}=\dfrac{c\cos B}{b\cos C}$ $$\implies P_x= \dfrac{x_2b\cos C+x_3c\cos B}{b\cos C+c\cos B}= \dfrac{x...

Nazmul Hasan Shipon

Sep 13, 2021 15:55

Can you help me about a math problem? @Buraian

Nazmul Hasan Shipon

Sep 13, 2021 15:54

It's good to see you @Buraian. I'd always be grateful for that you helped me previously.

Nazmul Hasan Shipon

Sep 13, 2021 14:11

Hello @Buraian.