Recent content by Borek

Chrome under W10: WHAT'S NEW/New posts in the top menu

Double-edged explanation, if they bind to water molecules, they lower amount of free water so the concentration of everything goes up. As I was trying to suggest with my questions above: my bet is that they are osmotically active, just in typical conditions (pH somewhere between 5-8) this...

Similar ones are also tested for search and rescue operations, so probably pricing is not that prohibitive.

Are you sure they aren't? Also: what is the pH range of solutions involved? What are related H+ concentrations? What are osmotic pressures related to these concentrations? And what are typical osmotic pressures related to other ions/substances? A bit too broad statement for my liking, as it...

So you are subtracting heights of columns of different liquids? Won't work, if anything, you should multiply them by their densities, not just both by the oil density. That's just the first thing that caught my attention, doesn't mean there are no other problems, what you wrote is a bit chaotic...

I can be wrong, but it seems to me you are trying to understand the definition in terms of our todays understanding of what the acid is. If so, it probably won't work - I strongly doubt Naunyn thought in terms of H+, more likely he thought something like "when there is chlorine present solution...

Simulation of oscillators (like Belousov–Zhabotinsky reaction) is always fun.

No. Sadly, it is not the first time we have discussion on the efficiency of different techniques used in hand combat. They often end poorly, as the martial art community tends to use terms like "mass", "power", "force" very loosely, completely missing the fact they have a very precisely defined...

In my drawer "possibly carcinogenic" lies next to "we have no idea but we won't say 'safe' to avoid being sued".

Even wiki states: "Reaction with acids (...) removes the silyl group when protection is no longer needed.", so my bet is yes, it is something quite well known.

Eons passed since I worked with these things, but quick googling for stability of silyl ethers seems to be suggesting it is pH dependent.

You don't "make" supercapacitor from normal capacitors, you buy one. They are not trivial to use, they have a specific, low voltage (around 2.7 V for fully charged), so they require quite a bit of electronics/regulators for both loading and recovering the charge.

I can be wrong, but my understanding is that part of the mounting procedure calls for creating a vacuum in the system. That's to make sure the R-whatever agent that will fill the inner volume is as pure as possible, and not mixed with the humid air that is in all tubes right now. At least that's...

If you are not sure you can always ask here, or in General Discussion, or even just post your question in Classical Physics - just state clearly you are not sure where it fits, and it will be moved by mentors. Yes, if you don't know physics sometimes deciding where the question goes is...

Endurance flight is about keeping weight as low as possible, so it is probably much wiser to use longer runway (or start from a catapult, even DIY style) than to make model heavier.