Recent content by Borek

I am asking myself the same question.

That's the thing - that would mean killing his anonymity at PF.

We are. We were able to confirm his real name and obituaries are all over the net. He wasn't highly valued and respected just on the PF.

My understanding was that their specialty is a very precise timing (they are very fast), allowing well synchronized ignition of charges. But I can be completely wrong.

Yep. At the same time it was always a learning experience (especially for someone - like me - coming from a science that allows/needs much more handwaving than allowed in physics).

To add to that: the process of surrounding dissolved molecules by solvent molecules is called solvation. Sometimes there are several solvation layers - they separate dissolved molecules from each other. When you remove the solvent sucrose molecules combine to build the crystal lattice again...

Oxalates have very low solubility, so even if the tin gets reduced there is a risk it will be contaminated with other solids. Judging from standard potentials its activity is higher than Zn and comparable with Al, that makes the reduction (especially in water, especially to fine dust) highly...

This system is rather messy, there are several competing reactions occurring in parallel and difficult to control separately, although some of them prefer higher/lower temperatures, some occur easily in higher/lover concentrations. The only sure way of finding optimal point is experimental...

In general: no. Yes, you can produce lower voltage with resistors (using voltage divider), but it is not a reliable way of powering a device.

I don't think there is any real "rule" to that, but various toy DIY sets I bought just stated what voltage they need (typically 12V or 5V). And a basic regulated power supply is a staple of any electronics workshop (I paid for my below $50).

I am getting too soft.

Perhaps look into Newtonian and non-Newtonian fluids?

Intensity of Raman scattered photons is several orders of magnitude (wikipedia article suggests 10-6 range) lower than the intensity of the exciting photons, which makes detecting them difficult. My bet is you want as strong light source as possible (or, at least, you need to estimate whether...

Yes, and that's what your original post was missing. You mentioned just dissolving and varying the temperature, there were not a single word about the excess left. Kitchen salt is technically never 100% pure (actually 100% pure NaCl would be costly as hell, analytical methods can detect ppm...

Could be that's just a lousy wording, but no, varying temperature is not what makes the solution saturated. You need to be sure there was an excess of salt present during dissolution.