Quantum Physics

[Francesco_from_Rome]

In this video, starting at around 5:00, it is nicely and graphically explained:


https://www.youtube.com/watch?v=N0mraHHyBrA

Mauro35, that's a nice video. Thanks for sharing.

Francesco

 

[Francesco_from_Rome]

Francesco, I know Tadeki personally and had dinner with him on his last trip to Rochester. He is a brilliant theorist as well as a brilliant film designer, but I have heard that the translation of his book into English did not shine even though his personal English is excellent.

I have not read it but have seen small portions and it seems good to me but some friends say it becomes overly technical along with the awkward translation.

Now, this is all hearsay as I do not have a copy and have not read large portions of the book personally.

So, take it as you wish. I would recommend it in spite of the comments above.

PE

PE, thanks, as usual. I have googled Tadaaki Tani (to discover if he had a personal homepage or whatever). I didn't find any, but I found some interesting threads here on APUG where you were explaining issues similar to those presently discussed.
It appears that his book is not readily available (read: on Amazon), and on the OUP site it says "printed on order" ( http://ukcatalogue.oup.com/product/9780195072402.do ) . I will search around for an used copy, maybe that could be a cost-effective way for me to learn something about photographic sensitivity. As for the awkwardness of the translation, I will have to content myself with it since I am not able to read Japanese...

Francesco

 

[DREW WILEY]

Quantum mechanics describes how something can be in more than one place at the same time. In Colorado they sell certain recreational products that help you do that. I'd rather keep my eyes on the road.

 

[scheimfluger_77]

So is the cat alive or dead?

Yes!

 

[RobC]

Yes!

(there was a url link here which no longer exists)

Deja vu, but then this is Quantum Mechanics we are talking about

p.s. If Schroedingers cat craps on my lawn there will be no uncertainty about whether its alive or dead.

 

[drkhalsa]

Schroedinger's cat was mentioned in tonight's episode of Person of Interest.

 

[rpsawin]

In quantum physics Schrodinger's cat is both dead and alive at the same time until the true state of the cat's health is known.

If it's the cat that has been pissing in my garden I am prepared to make a prediction...


Best regards,

Bob
CEO CFO EIEIO, Ret.

 

[mauro35]

Mauro35, that's a nice video. Thanks for sharing.

Francesco

Ciao Francesco,

you are welcome!

 

[Sirius Glass]

If it's the cat that has been pissing in my garden I am prepared to make a prediction...


Best regards,

Bob
CEO CFO EIEIO, Ret.

Is a drop kick one of your predictions?

 

[cliveh]

Has it ever been determined at what precise scale Newtonian physics reverts to quantum physics?

 

[Photo Engineer]

Let's leave that as an exercise for the student. You tell us.



PE

 

[MattKing]

Has it ever been determined at what precise scale Newtonian physics reverts to quantum physics?

The answer depends on the observer.

The parallels with "circle of confusion" definitely come to mind.

 

[rpsawin]

Is a drop kick one of your predictions?

A test of feline aerodynamics is in the top five of my choices.


Best regards,

Bob
CEO CFO EIEIO, Ret.

 

[Theo Sulphate]

In this video, starting at around 5:00, it is nicely and graphically explained:


https://www.youtube.com/watch?v=N0mraHHyBrA

That is an awesome documentary, in every sense of the word. I'm impressed by the chemists and scientists who were involved in this process.

The only part I wish had been elaborated on was the "sensitivity speck" - just what is that mysterious object?

 

[Photo Engineer]

He said Silver Sulfide or Ag2S. This is put on the grain by adding Sulfur (from additives selected from a number of chemicals) and heating the emulsion to create the speck.

There was another one of these films posted here that was very good as well, and BTW, Kodak signed another 2 year agreement for Cine film today.

Hooray!

PE

 

[Theo Sulphate]

He said Silver Sulfide or Ag2S. This is put on the grain by adding Sulfur (from additives selected from a number of chemicals) and heating the emulsion to create the speck.

Ok, thanks. I must've missed it since I had to watch the video on my phone during lunch :- )

So has this "speck" been part of only relatively modern emulsions or does it date back much further (e.g. 1800's)?

 

[Bill Burk]

Mees, The Theory of the Photographic Process is going to be fun reading...

Theo, I think it's been known for a while...

https://archive.org/stream/TheTheoryOfThePhotographicProcess/aa012#page/n157/mode/2up

The footnote leads to work by Sheppard in 1927

And only a few pages later Webb, in 1938 started to correlate quantum mechanics to latent images...

 

[Theo Sulphate]

Oh - ok - this is just the sensitizer coating then. Sorry. I guess I just fooled myself into thinking there was some other special element added to the process.

Chemistry is not my long suit (that's a card game reference :- ) )

 

[Photo Engineer]

Well, it is a gamble whether you get to the peak in that diagram in Mees. It is real trial and error some times.

PE