Recent content by mubashirmansoor

its Analytic grade H3BO3... It has been at room temperature in a poorly sealed plastic container.

Does Boric Acid Expire ? or become B2O3 after 5-10 years on its own? Hi, I have had some Boric acid (99.9%) bought a very long time ago... The expiry date was in 2006... I have used it recently and it is as if it's pure B2O3. Is that even possible??! How could it be?! or is there something I...

Thanks a lot :)

Thanks for the reply DrDu, I am willing to calculate the phonon-electron & Vibronic couplings so that I can figure out some of the changes in the absorption spectra of doped crystals. I will highly appreciate if you recommend a book or paper which has done such calculations and applied...

I am very interested in calculating the vibronic couplings of a particular system quantitatively, but I am very new to Quantum Physics... so I will highly appreciate your guidance on where to start from? What kind of mathematics do I need to learn? I am quite puzzled because If I have...

I have been googling as many terms possible, but still not successful in finding a list of diffusion coefficients of common minerals eg; Quartz, Beryl, Spinel, Corundum etc... I will highly appreciate your contributions.

This was a statement by Prof Donald Sadoway (MIT 3.091) http://www.youtube.com/watch?v=R90sohp6h44"

Why is a boron doped diamond xtal blue ? hello :) Unfortunately I am not able to find the quantitative description of how a concentration of 1ppm Boron doped in a diamond crystal can produce a blue color such as the http://en.wikipedia.org/wiki/Hope_diamond" ? The doped boron creates an...

Yeap... Thats it!

http://research.microsoft.com/apps/tools/tuva/index.html" There is a complete lecture dealing with the double slit experiment and the quantum description of light by Richard P. Feynman... I highly recommend watching the lecture which will certainly clarify the issue for you... Good Luck :smile:

This is sure helpful but what about the rest of the absorptions throughout the 450 - 700 nm spectrum? How to get the exact tone or wavelength of the color in a quantitative way? Thanks in advance :)

I have been wondering how to realize the color of a mineral by having the absorption Spectra... The following case is an example; The image is the absorption spectra of a Bolivian Amethyst which looks like this; [PLAIN]http://www.tequilabay.com/amethyst300lbbolivian.jpg I have tried...

Hello, I would like to know how the lattice diffusion is done & why is it temperature dependent? I have tried googling Lattice diffusion several times, but I couldn't find any complete online reading/video... Your contributions will be highly appreciated.

Thanks for your kind reply :) Once again, very interesting... In fact I am studying Gemology & it's just my 4th semester now, so way too much left to get an idea of what is really going on :) You are absoloutelty right, but what makes me confused is that once again the crystallization...

True, but I though it couldn't be that easy to sail the oceans... Thanks for the contributions.