Recent content by renormalize

According to Google: "Is prolly in the Oxford dictionary? It's actually the Oxford Dictionaries rather than the OED with this entry: “informal Probably.” The etymological citation: “1940s: representing an informal pronunciation of probably.” Update: After I posted this, a tweet from Jesse...

A standard Theremin uses 3 oscillators, two working at about 260 kHz and one at 450 khz. Nothing oscillates at nearly a gigahertz. See: https://web.physics.ucsb.edu/~lecturedemonstrations/Composer/Pages/60.17.html

Google Chrome in Windows 10.

Can you explain what additional functionality you'd like to see in a spellchecker? The current editor already underlines in red the words it doesn't recognize.

Your link gives this raw image at NASA, which is a different photo from the one you showed, and contains no cone. Where did your photo actually come from? EDIT: Sorry, I spoke too soon! The cone is at the right side below the middle. So your question is definitely valid! But where did the color...

Yes, and I think that's exactly what @Ibix is talking about as well. To quote his post #4, with some clarifications in brackets added by me: "Don't they [Weber bars made of metal, e.g., aluminum] just change length when a gravitational wave passes through them? And you should be able to detect...

You'd have to check by doing some calculations. But the material requirements are quite stringent if it's going to resist collapse by compression and buckling: https://en.wikipedia.org/wiki/Vacuum_airship

That's incorrect. The ability of a material to shield and channel magnetic fields is measured by its relative-permeability ##\mu_R\,##, which takes the value of ##1## in vacuum. The weak diamagnetism of copper gives it a permeability of ##\mu^\text{Cu}_R=0.999994##, which is so close to vacuum...

Have you considered simply trying to "run it up the flagpole"? In other words: write a clear paper, send it to the appropriate journal and then wait for their response. I was successful doing this a few years ago, when I submitted a brief comment, related to general relativity, to a respected...

Personal theories are explicitly prohibited here on Physics Forums by the usage rules you agreed to follow when you registered your account: https://www.physicsforums.com/threads/physics-forums-global-guidelines.414380/ Speculative or Personal Theories: Physics Forums is not intended as an...

Agreed! As the sun gets higher in the sky, the top of the rainbow gets closer to the ground, and the visible portion of the arc gets smaller.

Assuming the photo is not doctored, the only way I can see this happening is if an angled, specular-reflecting surface (a glass roof or solar-panel array?) is located somewhere between the camera and horizon that redirects the sunlight upward, so it appears to originate below ground level...

This is a follow-up to my post #27 (which so far has not received any specific comments), in which I drew from the 1982 Silverman reference on muonic atoms to promote the idea that bound quantum particles can be usefully characterized by both velocity and time dilation. First, I quote some...

OK, it seems clear that viewing a particle in a stationary state as moving with average speed ##\sqrt{⟨\mathbf{V\cdot V}⟩}## is an iconoclastic interpretation. But at least one physicist promotes that view: I finally got a hold of the paper Relativistic time dilatation of bound muons and the...