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# Current Year 13 thread Mark I (2014-2015) watch

1. (Original post by rachelc142)
The schrodinger equation hurts me to look at
I understand most of the principles of quantum phys but the maths is pretty hardcore
Today I looked at a version of pauli's exclusion principle that used angular momenta equations and it was just unreal hahaha, about 50 lines of symbols

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Just stick to the time independent.

Whaaaat, crazy.

E psi x = U(x) Psi(X) - hbar /2m d2psi(x)/dx2

Hope that's right, just in case they ask me to quote it lol.

I can now also find the probability of an electron, between certain lengths for a 1D system
2. (Original post by H.Ibrahim)
Looks like we agree on something here
I think Mark is brill but get the feeling Lord Sugar doesnt like him?
Daniel has potential but has too quick a temper. Roisin could get into the final.
(Original post by L'Evil Fish)
Just stick to the time independent.

Whaaaat, crazy.

E psi x = U(x) Psi(X) - hbar /2m d2psi(x)/dx2

Hope that's right, just in case they ask me to quote it lol.

I can now also find the probability of an electron, between certain lengths for a 1D system
Sounds about right? I definitely don't know it off the top of my head.
I got asked about gaussian/normal distribution equation for an interview question but that was only because I brought it up!
Ohhh yeah, using uncertainty princ.? Brian cox explains that well in his book actually

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3. (Original post by rachelc142)
The schrodinger equation hurts me to look at
I understand most of the principles of quantum phys but the maths is pretty hardcore
Today I looked at a version of pauli's exclusion principle that used angular momenta equations and it was just unreal hahaha, about 50 lines of symbols

Posted from TSR Mobile
I just read your post on Physics and <3 physics myself, I was intrigued you mentioned Pauli exclusion principle as 30 mins ago, I was watching a video on how Brian Coxx made a mistake on Tv regarding Pauli exclusion principle of how everything is interconnected and used 'energy' rather than 'quantum states' on TV and how it created a debate amongst Physicists.

Personally, I think Dirac's work is a lot more complicated than Schroedinger and Heisenberg which gives the same result through the delta function but it's crazy to see how 'real' physics is underpinned by abstracts of mathematics. I saw Dirac relativistic description of the electron and the negative energy states which are just pure symbols.

#whatislife
4. (Original post by rachelc142)
I think Mark is brill but get the feeling Lord Sugar doesnt like him?
Daniel has potential but has too quick a temper. Roisin could get into the final.

Sounds about right? I definitely don't know it off the top of my head.
I got asked about gaussian/normal distribution equation for an interview question but that was only because I brought it up!
Ohhh yeah, using uncertainty princ.? Brian cox explains that well in his book actually

Posted from TSR Mobile
I might need to do that then

It's using some wave equations given its a free particle. So knowing it's in the form. Asin(kx) +Bcos(kx)
5. (Original post by XxKingSniprxX)
I just read your post on Physics and <3 physics myself, I was intrigued you mentioned Pauli exclusion principle as 30 mins ago, I was watching a video on how Brian Coxx made a mistake on Tv regarding Pauli exclusion principle of how everything is interconnected and used 'energy' rather than 'quantum states' on TV and how it created a debate amongst Physicists.

Personally, I think Dirac's work is a lot more complicated than Schroedinger and Heisenberg which gives the same result through the delta function but it's crazy to see how 'real' physics is underpinned by abstracts of mathematics. I saw Dirac relativistic description of the electron and the negative energy states which are just pure symbols.

#whatislife
Oooh damn, making a mistake on TV is not so forgiveable...
Maybe he spoke about energy as a continuous spectrum rather than discrete values?
Yesss the Fermi-Dirac tables are supposed to be more completed due to the half integer spin/fermions? Haven't looked as closely at them
Negative energy is the weirdest thing
In my epq research was doing wormholes and it talks about negative mass cosmic strings. Like whuuut even is that. Hahaha.

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6. Back from that dinner - didn't expect it to last 3 hours but it was good fun!

(Original post by rachelc142)
Oooh damn, making a mistake on TV is not so forgiveable...
Maybe he spoke about energy as a continuous spectrum rather than discrete values?
Yesss the Fermi-Dirac tables are supposed to be more completed due to the half integer spin/fermions? Haven't looked as closely at them
Negative energy is the weirdest thing
In my epq research was doing wormholes and it talks about negative mass cosmic strings. Like whuuut even is that. Hahaha.

Posted from TSR Mobile
My Physics teacher spoke about negative mass once. He was explaining the parallel between electric fields and gravitational fields - just think of mass like a charge carrier. If things had negative mass, they'd fly away, which we thought was pretty funny
7. (Original post by Bude8)
Back from that dinner - didn't expect it to last 3 hours but it was good fun!

My Physics teacher spoke about negative mass once. He was explaining the parallel between electric fields and gravitational fields - just think of mass like a charge carrier. If things had negative mass, they'd fly away, which we thought was pretty funny
We all thought it was pretty funny when my physics teacher was using his hands to explain the double slit experiment
8. (Original post by H.Ibrahim)
We all thought it was pretty funny when my physics teacher was using his hands to explain the double slit experiment

He turned to a guy and said:

'Nick - do you remember the time you asked me for a variable resistor? Well if you had told me why you wanted one I would have given you something better so you wouldn't have ****ed up what you were trying to do.'

Then he spoke to everyone else in the class and said:

'You see; Nick here was planning on bringing a girl back from a date, and he wanted some romantic lighting. The plan was to start bright and gradually dim the lights before going completely dark to go under the sheets, yknow. If he had told me this, I would have told him a variable resistor wouldn't have worked, and instead, I would have given him a potentiometer.'

I think that's how it went
9. (Original post by Bude8)

He turned to a guy and said:

'Nick - do you remember the time you asked me for a variable resistor? Well if you had told me why you wanted one I would have given you something better so you wouldn't have ****ed up what you were trying to do.'

Then he spoke to everyone else in the class and said:

'You see; Nick here was planning on bringing a girl back from a date, and he wanted some romantic lighting. The plan was to start bright and gradually dim the lights before going completely dark to go under the sheets, yknow. If he had told me this, I would have told him a variable resistor wouldn't have worked, and instead, I would have given him a potentiometer.'

I think that's how it went

My physics teacher is a bit old and used to, at the end of every lesson, relate the learning objects to ways you can start conversation with a girl in a disco club (yes like those in the 80's )
10. oh jeez... i remember doing GCSE physics
I had to wear a lab coat and specs just to boil water... with a kettle
11. (Original post by H.Ibrahim)

My physics teacher is a bit old and used to, at the end of every lesson, relate the learning objects to ways you can start conversation with a girl in a disco club (yes like those in the 80's )
Speaking of clubs, when he was teaching us about gravitational forces, he asked me to calculate the force between me and the girl sitting next to me (assuming we were 1m away which was a huge overestimate but whatever )

We ended up with a number like . Then he said:

'Next time you go to a nightclub, take your metre ruler with you and when you see an attractive person, place the ruler between you and say to them 'did you know there's a force of around attracting us to each other? But here's the sexy bit - if we halve this distance, the force becomes 4 times stronger due to the inverse square law ' and eventually, their clothing will be accelerating towards the floor at '
12. (Original post by 고구마)
oh jeez... i remember doing GCSE physics
I had to wear a lab coat and specs just to boil water... with a kettle
Oops, looks like I've been making noodles wrong my entire life
13. (Original post by Bude8)
Oops, looks like I've been making noodles wrong my entire life
stick in a thermometer and I bet you can work out the enthalpy change and of course, better do repeats... you know how unreliable noodles can be, especially if they get eaten so quickly
14. (Original post by Bude8)
Speaking of clubs, when he was teaching us about gravitational forces, he asked me to calculate the force between me and the girl sitting next to me (assuming we were 1m away which was a huge overestimate but whatever )

We ended up with a number like . Then he said:

'Next time you go to a nightclub, take your metre ruler with you and when you see an attractive person, place the ruler between you and say to them 'did you know there's a force of around attracting us to each other? But here's the sexy bit - if we halve this distance, the force becomes 4 times stronger due to the inverse square law ' and eventually, their clothing will be accelerating towards the floor at '
15. Interview were okay but thank god that's over
16. (Original post by Red Fox)
Interview were okay but thank god that's over
Grilled beyond well done?

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17. (Original post by Red Fox)
Interview were okay but thank god that's over
What course was it?
18. (Original post by Red Fox)
Interview were okay but thank god that's over
Oooh where was it at and for what course? (Presuming this is for Uni )
19. (Original post by Bude8)
Grilled beyond well done?

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The TSA was horrible, but multiple choice means 0.2^50 probability of full marks

(Original post by H.Ibrahim)
What course was it?

Oooh where was it at and for what course? (Presuming this is for Uni )
Camb- Engineeering
20. (Original post by Red Fox)
The TSA was horrible, but multiple choice means 0.2^50 probability of full marks

Camb- Engineeering
Wait, you have to do TSA for engineering? I thought I was a thing for humanities?
Any for cam, did they do or ask anything Cambridge-y (i.e. weird)?

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Updated: June 10, 2015
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