Recent content by Orionabc

Does the volume swell ratio relate to the weight gain when a crosslinked polymer is emersed in a solvent? Is it as simple as calculating (delta V) = (delta w)/density?

I wonder exactly that too. It makes sense to talk about the point at which a photon originates and the point at which it is detected. Anything in between has to be inferred and in order to infer it we assign a plethora of physical properties to it without any way of measuring them. We...

Putting it in the vernacular...thats totally cool. It means that the age of a photon can only be determined by plotting its point of origin in the universe. To do that I need to know its current momentum vector don't I? Or at least what it was at the time I detected it?

Interesting, thanks Joseph14 and Arkajad. So for large distances...to maintain spatial coherence requires having the same wavelength. In a classical universe, where we have continuously variable wavelengths, it gets harder the further out you go. You would have to wonder, given a...

It depends on how you approach corrosion. Corrosion touches a very broad range of technologies in one way or another. Architecture, pipelines, cables, superstructures of all sorts (ships, bridges, railroads, airplanes...etc). As a corrosion engineer, I am guessing, you will have to be able to...

Thanks for answer. I agree source matters and coherence is why, but...does the distance to the source matter?

If I "create" a stream of photons in the lab or if I spectographically select a stream of photons from a star, I get the same experimental result in a double slit experiment? In other words there is no difference between photons whose point of origin can be deduced to be eons ago vs those...