Recent content by _Anthony_

https://www3.ntu.edu.sg/home/ecqsun/CCR-H2O.pdf http://www3.ntu.edu.sg/home/ecqsun/RTF/JPCL-Water%20Densty.pdf

Thank you everyone for the links and documentation. I thought this was an urban myth and put it out of my mind after I watched the Mythbusters episode. Now that I know it is science, just not science most people know, including scientists, I'm going to experiment. Anthony

I just tried it. Super magnet on a pill bottle cap floating in a bowl of water. It aligned itself North South. I ran two two meter long parallel wires on either side connected together at one end and to a power supply at the other. I passed 5A through the wire. No rotation. I'll try it...

phinds, Thanks for quoting my post and questioning my reasoning. Once the laws of physics are redefined anything is possible but beyond that considered Thompson's raisin in pudding model of the atom, completely wrong yet it does a passable job. I interpreted the question as lay person would...

>...if we take Spacetime out of equation Returning to the original question. If momentum and mass can exist outside of space-time then in your thought experiment everything would drift away or together depending on the momentum and any charges there might be. Anthony

Clarification. I didn't mean to imply that the large bubbles became smaller bubbles. I miswrote. It seems a little like that but of course the other bubbles were already present. And I just want my mentor to know, it took all my doing to not title the thread; "Bubbles bubbles toils and troubles"

The apparatus consisted of a one gallon air tight clear plastic jug one quarter filled with ferrous chloride (uh, Fe(II)Cl ?), water and sufficient hydrochloric acid to complete the transformation. The remaining space was filled with oxygen at atmospheric pressure. When triggered a mechanism...

This isn't exactly the alloy I was thinking of but it has similar properties first shrinking after solidifying then over the course of hours expanding. 42.5% Bi 37.7% Pb 11.3% Sn 8.5% Cd This came from google books Technology: Handbook of Vacuum Physics edited by A. H. Beck

Yes bismuth is safe to touch. There are several aloys of bismuth and tin that have interesting properties. One where when the metal freezes (solidifies) it first shrinks then over a period of hours expands to the size of the mold. It was once used to examine rifling. I think it's amazing.

sophiecentaur, Or maybe more likely I didn't read it right. I'm new here and I don't want to offend anyone, I've got lots of questions to ask the "knowledge database" donating their time. I apologize for the miscommunication.

With respect sophiecentur, astronomical mirrors are generally silvered on the front. There is a type of optical element that is silvered on back, it's called a mangin. Due to the color aberration introduced by refraction designs including mangins are uncommon. I've personally never seen an...

This has nothing to do with focal length. Most everyday mirrors made of glass are coated on the back surface. A "thick" mirror's numerous internal reflections are generally quite visible, hence the answer given. The Newton ring interferometers I've built either use thin glass or half...

I've done a good deal of searching since I asked and have found a few morsels of information. With that and the answers here I'm back where I started, no significant consensus and conflicting explanations. I can say I've been reminded how difficult thermodynamics is and how much I've forgotten...

I found this: http://www.madsci.org/posts/archives/2003-08/1062090768.Ch.r.html It identifies a Heat of Solution as a contributor to temperature reduction. So the dissolution of CO2 in acetone is endothermic. At a temperature around -78C or so, how much? Anthony

So then there's no chemical reaction at all, it's just heat exchange. Than you Bystander, you've confirmed what I thought. I guess I put the question in the wrong section. Sorry about that. It was my first post. Anthony