Recent content by Clovis

Hi again, Anuttarasammyak. This question is much more complicated than I originally thought. Thank you very much for explaining it. I will think more about what you wrote.

Discovered a math error in my analysis above. Please ignore for now.

Hello anuttarasammyak and PeterDonis. I want to thank you both for making me think about my original posted question in more depth. After reviewing your comments I have analyzed, to the best of my abilities, the conservation of energy and conservation of momentum of the calcium atom emitting the...

Hi again, Anuttarasammyak. Again, thank you. I see now that I made a mistake in the way I formulated my previous reply, so please ignore it.What I should have said is this: In your first reply, I believe that you concluded that p (the momentum of the calcium atom after emission of the two...

Oops, my formatting test didn't work. Here is my reply with imperfect formatting. Apologies. Hello again, Anuttarasammyak. I very much appreciate you taking the time to consider my question in detail and write a thoughtful response. But I am having trouble understanding why the two equations...

Allow me to test the formmatting before I post a reply: mc 2.

Thank you, Anuttarasammyak. A similar thought had occurred to me at first but then I thought that the momentum of the system would still be conserved if, for example, both photons were emitted along the positive z-axis and the calcium atom recoiled along the negative z-axis. So it seems to me...

Hello. I have a question about the two photons emitted from a radiative atomic cascade (such as the calcium radiative cascade used by Aspect et al. in their tests of Bell's theorem). The short version of my question is this: Do the two photons have any directional correlation (any correlation...

Is it 0 K for a substance to have no entropy?Sorry. Just had to get that off my chest.

Thank you, Sienna. The reason for my question was merely to give proper credit for the tangent equation in a website that I am working on. But I appreciate your reply, all the same. Clovis

Hello, everyone. I am trying to find an aberration of light formula in Einstein's writings that is given in terms of tangents. I did a fairly thorough internet search and all I could find was the formula he wrote in terms of cosines. Yet I have a vague memory that somewhere he did give the...

Thank you both, Naima and Dr. Chinese. I think what I didn't understand before your responses is that there are sub-categories of entanglement. Particles can be entangled in some of their properties but not in others. For example, in the Wikipedia figure I referred to in my first posting, the...

Thank you very much, Naima, for a very clear reply. It helped my understanding quite a bit. I am pretty sure I understand the example you gave of non-entanglement in your last paragraph. I can see that if the particles come from two sources then they are not entangled. But if they come from the...

I would like some help understanding some parts of spontaneous parametric down conversion (SPDC).In the Wikipedia article on the topic…http://en.wikipedia.org/wiki/Spontaneous_parametric_down-conversion…the third figure from the top is labeled “An SPDC scheme with the Type II output”. The figure...

I was searching the internet for information on Bell tests, when I found an article entitled "Taco Bell tests grilled stuffed nacho." Does anyone know how the stuffed nachos are used in Bell tests? http://www.huffingtonpost.com/2013/10/11/taco-bell-grilled-stuft-nacho_n_4086345.html...