Recent content by Borek

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.

Not that it matters much - at some point you just live in a world where the standard exists, everyone is used to it and all applications are built around it. It is like with some politicians - you look at them, you wonder "how they got there?", but there is not much you can do to change them.

Interesting. Could be something has changed lately or it is a difference between US/EU, but my previous one (bought ~10 years ago) was definitely with the transmission belt, not sure about the one we use now (and I won't risk opening it now to not void warranty, but next year - who knows).

Washing machines use transmission belts to get the required speed, so in this particular case the main difference would be just a different gear ratio. Broadly speaking differences wouldn't be that large, I doubt they would be easy to spot for a layman.

I suppose the shortest answer is: it does. Just in a properly made circuit and in a typical situation the current is very low.

In theory recrystallization is one of purification methods, In practice you will never really know without precise analysis. Plus, NaCl is one of these salts that are difficult to recrystallize, as its solubility doesn't change much with the temperature.

Unless my English fails me big there is no such thing as "humidity of a solution", I suppose you mean "humidity of the air saturated with a vapor in equilibrium with the saturated salt solution"? Such highly concentrated solutions are about as far from being ideal as possible, so their behavior...

OP, here: (link removed) This is seriously misleading as written. Mass spectroscopy is a technique that involves evaporating sample in a vacuum, ionizing it, accelerating ions in an electric field, deflecting them in a magnetic field and finally detecting them afterwards so that they can be...

Perhaps I am missing something but I don't get why you mix Raman spectroscopy with mass spectroscopy, these are completely different, unrelated things.

Raspberry Pi 500 is basically Raspberry Pi 5 with some added peripherals. So a small footprint multicore 64-bit computer with built in USB, HDMI and WiFi ports, typically with linux distro on micro SD card used for storage, reasonably beefy for many DIY projects (I would even say unnecessarily...

I planned to post earlier, but real life made it impossible. Last Tuesday, 9/9, I finally released the game I was working on for the last three years, The Case of Andrew D. It is an investigative video game blending Open Source Intelligence (OSINT), digital forensics, and alternate reality...