Quantum Fyzix is getting more complicated as we speak...
http://phys.org/news/2014-12-unveils-half-light-half-matter-quantum-particles.html

Quantum Fyzix is not getting more complicated but it's still very difficult to understand.
Einstein didn't understand it.
Richard Feynman was questioned by Nils Bohr when Feynman showed diagrams how it works. Bohr said it was impossible.

The more you know about quantum fyzix, the more you go into it, the more complicated it gets.

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rOZZ
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Quantum Fyzix is getting more complicated as we speak...
http://phys.org/news/2014-12-unveils-half-light-half-matter-quantum-particles.html

Quantum Fyzix is not getting more complicated but it's still very difficult to understand.
Einstein didn't understand it.
Richard Feynman was questioned by Nils Bohr when Feynman showed diagrams how it works. Bohr said it was impossible.

I recall my first quantum mechanics lecture.
The lecturer walk in, looked round the lecture theater, then the blank board and got his marker pen out and starting in the top left corner started to write, and without a word or a pause, filled the board with loads of equations. He then looked round at us, most of whom were frantically trying to get everything down on paper, and spoke "Ladies and Gentlemen, that is all you have to learn this term, learn it and you will be back next term for the really interesting material..." I was back for the really interesting stuff, and the simplicity of that results from choosing the correct set of transformations.

(Most of it is forgotten now due to lack of use, but I did teach some of the maths - to maths lecturers! and some of the applications to A-level students, all of whom got far better grades than their schools expected - because they knew what was behind the rote-learning the curriculum forced them into and so could produce their answers much faster.

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Bob Smith
Member of Seti PIPPS (Pluto is a Planet Protest Society)
Somewhere in the (un)known Universe?

If you want the whole thing, it's library time or buy the article:

http://www.nature.com/nphoton/journal/v9/n1/full/nphoton.2014.304.html

But all the references are there.

CC

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Ha! You just beat me to it!

:-)

CC

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Quantum Fyzix is getting more complicated as we speak...

http://phys.org/news/2014-12-unveils-half-light-half-matter-quantum-particles.html

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rOZZ
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I was unaware that it was surrounded by the Adriatic and Slovenia. (Is this correct?)

Yes.

Map

I was not a young scientist but a retired theoretical physicist. I still conserve the letter by Roger Penrose.
Trieste is a beautiful town, very close to Slovenia, and the Carso (Karst) highland and its caves and rocks for climbing schools.I worked there fron 1991 to 1994 in the Area Science Park near the Elettra synchrotron light source built by Carlo Rubbia. Then I had to come back to my home near Milano. Trieste is also the site of the International Center for Theoretical Physics, founded by Abdus Salam. It stands very close to the Miramare Castle and Grignano bay, from where Maxilmilian of Absburg sailed to Mexico and his death. A very romantic place.
Tullio

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Tullio,

How wonderful that he responded to a young scientist so quickly. You are fortunate. I hope you still have that correspondence!

Trieste is quite beautiful, and in an interesting location. I was unaware that it was surrounded by the Adriatic and Slovenia. (Is this correct?)

Anyway, back to physics ...

The De Broglie-Bohm theory is very cool:

http://en.m.wikipedia.org/wiki/Bohmian_mechanics

CC

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Penrose is a very kind man. He was quick to answer a letter I had sent him with a text written by me in 1980, before reading his books, and said it was "very interesting".
The seashore of Tel Aviv is clean and beautiful even on a Saturday morning. I enjoyed the walk along the sea shore. You know, I was born in Trieste, where it s sufficient to take a tram and have a bath in the Adriatic.
Tullio

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That's Fyzix for you! ...

BTW - thought for the day. If I waggle both my hands at you is that a wave duality?

Groan... That is worse than the worst of my multiple puns! ;-)

Here's hoping you don't need that for the signals replacement service to get King's Cross back rolling...

Then again... Slow running planned with an extra 20mins just to get through the station... Perhaps they're falling back onto the old tech of walking red flags...


Good luck! Hope you get to your Christmas lunch on time!!


Merry Christmas,
Martin

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See new freedom: Mageia Linux
Take a look for yourself: Linux Format
The Future is what We all make IT (GPLv3)

Tullio, Roger Penrose is one excellent writer. He never fails to ask interesting questions and explain
his thoughts.

That's a trek for a cup of java. You must be addicted ;-)

Shalom, shalom.

CC

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Take an hour off and go watch The Secrets of Quantum Physics, you've missed the first program in series but this one might increase your knowledge a little bit.

That's Fyzix for you!

It's also like a U tube Manometer, an effect on one side has a proportionate effect on the other side.



BTW - thought for the day. If I waggle both my hands at you is that a wave duality?

Ah ah ah, Chris! You took the Cliff's notes page! :-)

Article one would disagree with you (possibly). It's uncertain!

CC

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In short, the Copenhagen Interpretation doesn't predict a cat simultaneously alive and dead, but rather a cat that is fully alive until it is fully dead. To put it another way, even famous and intelligent physicists like Schrödinger can be completely wrong.

Takes a bow, smiles at the audience, thank you loyal fans, exits stage right to applause.

Naa naa, told ya....

But very interesting! Physicists have disagreements about this, too, as one might expect:

http://en.m.wikipedia.org/wiki/Copenhagen_interpretation#Wave.E2.80.93particle_dilemma

For fun:

http://tvtropes.org/pmwiki/pmwiki.php/UsefulNotes/SchrodingersCat?from=Main.SchrodingersCat

Love the poster!

CC

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It doesn't seem any less complicated to me but maybe a tad more confusing.

Same here LOL

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rOZZ
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If the fire is lighted that is not by a human action, but by the laws of probability.And if it is not lighted? Then you repeat the experiment.

That is the same as playing cards and losing. Then playing double or quits until you win. The probability is that at some point if you play long enough you will break even and wipe out your debt. But that depends upon how long your opponent will let you play berfore paying up.

The fire which is lit or not lit by probability, depends upon enough power to run it and enough time to get a cup of hot coffee within the timescales that the two men are prepared to wait for it.

All this is just waffling around my basic premise that Schroedinger's cat is a bad example and a load of old nonsense.

The uncertainty principle says that in trying to measure both position and momentum the act of measuring will will alter one or the other of these quantities.

Ok I can go along with that. It is like a seesaw. Both ends can't be up or down at the same time, if one goes up the other goes down. Which end does which depends upon the instant that you observe the seesaw. If you concentrate on the position and take your eye off the momentum, it may well change, and vice versa because they are linked. The actual act of observing or measuring won't change anything. All you will see is where the two linked quantities are in relation to each other at any one instant in time.

The best introduction to quantum mechanics that I know is a book by Albert Messiah, La mecanique quantique. I think it has been translated in English. I studied on it and then I passed it to my daughter for her thesis. The book by Paul Dirac, Quantum mechanics, is rather more difficult since you have to know the Hilbert spaces in order to understand it.
Tullio

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