Re: [ccp4bb] quantum diffraction

2010-10-16 Thread Jürgen Bosch
Can't find your reference unless you are referring to this one: JOURNAL OF MODERN OPTICS, 1994, VOL .41, NO .12, 2413-2423 In case I'm wrong, could you post the direct link for download of Dale's paper ? Thanks, Jürgen - Jürgen Bosch Johns Hopkins Bloomberg School of Public Health Department of

Re: [ccp4bb] quantum diffraction

2010-10-16 Thread Bernhard Rupp
> The wave function doesn't collapse to a single outcome > until the detector measures something Reference: Tronrud D, Entanglement-phasing in Quantumcryptocrystallography, Nature epub, doi:0101010.

Re: [ccp4bb] quantum diffraction

2010-10-15 Thread Bart Hazes
On 10-10-15 02:14 PM, Dale Tronrud wrote: ... The photon both diffracts and doesn't diffract as it passes through the crystal and it diffracts into all the directions that match the Bragg condition. The wave function doesn't collapse to a single outcome until the detector measures something

Re: [ccp4bb] quantum diffraction

2010-10-15 Thread Bernhard Rupp
.ac.uk] On Behalf Of Bryan Lepore Sent: Friday, October 15, 2010 1:07 PM To: CCP4BB@JISCMAIL.AC.UK Subject: Re: [ccp4bb] quantum diffraction btw, buckyballs have measurable wave properties. i think they are trying virus particles now.=

Re: [ccp4bb] quantum diffraction

2010-10-15 Thread Dale Tronrud
On 10/15/10 12:38, Bart Hazes wrote: > The photon moves through the crystal in finite time and most of the time > it keeps going without interacting with the crystal, i.e. no > diffraction. However, if diffraction occurs it is instantaneous, or at > least so fast as to consider it instantaneous. In

Re: [ccp4bb] quantum diffraction

2010-10-15 Thread Bryan Lepore
btw, buckyballs have measurable wave properties. i think they are trying virus particles now.

Re: [ccp4bb] quantum diffraction

2010-10-15 Thread Bart Hazes
On 10-10-15 10:37 AM, James Holton wrote: ... In fact, anyone with a Pilatus detector (and a lot of extra beam time) can verify the self-interference of photons in macromolecular crystal diffraction. Since the source-to-detector distance of a typical MX beamline is about 30 m, it takes 100

Re: [ccp4bb] quantum diffraction

2010-10-15 Thread Bart Hazes
The photon moves through the crystal in finite time and most of the time it keeps going without interacting with the crystal, i.e. no diffraction. However, if diffraction occurs it is instantaneous, or at least so fast as to consider it instantaneous. In some cases a diffracted photon diffracts

Re: [ccp4bb] quantum diffraction

2010-10-15 Thread Bernhard Rupp
mail.ac.uk] On Behalf Of Jacob Keller Sent: Friday, October 15, 2010 11:44 AM To: CCP4BB@JISCMAIL.AC.UK Subject: Re: [ccp4bb] quantum diffraction > >but yes, each "photon" really does interact with > EVERY ELECTRON IN THE CRYSTAL at once. A minor point: the interaction is not

Re: [ccp4bb] quantum diffraction

2010-10-15 Thread Jacob Keller
>but yes, each "photon" really does interact with EVERY ELECTRON IN THE CRYSTAL at once. A minor point: the interaction is not really "at once," is it? The photon does have to move through the crystal over a finite time. JPK

Re: [ccp4bb] quantum diffraction

2010-10-15 Thread Jacob Keller
>but yes, each "photon" really does interact with EVERY ELECTRON IN THE CRYSTAL at once. Take a crystal from the cave...10m long..perhaps not 'really'... It is however helpful to think of a coherence volume of the photon in which it interacts with every atom. We had some discussions and estim

Re: [ccp4bb] quantum diffraction

2010-10-15 Thread Bernhard Rupp
>but yes, each "photon" really does interact with EVERY ELECTRON IN THE CRYSTAL at once. Take a crystal from the cave...10m long..perhaps not 'really'... It is however helpful to think of a coherence volume of the photon in which it interacts with every atom. We had some discussions and estima

[ccp4bb] quantum diffraction

2010-10-15 Thread James Holton
Oh dear, here we go again. I know that there are people out there who have a hard time accepting quantum mechanics, but yes, each "photon" really does interact with EVERY ELECTRON IN THE CRYSTAL at once. Young's double-slit experiment is the simplest form of diffraction, which he performed in