robphy's latest activity

My colleague at a university in Appleton said that that parts of the town to the west of campus suffered some damage, but the campus was...

Can the pinned thread in the subforum (e.g. in relativity) have its title italicized in order to quickly make it distinguishable...

Here is my reply in a recent thread...

shipped, good idea!

Unfortunately, no, I didn't attend. I probably won't be at the 2027 Winter meeting [which will be the last Winter Meeting]. Hopefully...

I was satisfied with the old style, which seemed stronger. The new style seems visually like an old sepia photo in comparison. I don't...

postscript (other curvature invariants that could be given a similar treatment): https://en.wikipedia.org/wiki/Kretschmann_scalar...

Thank you all for the references. In fact, my original curiosity came from the observation that, in Schwarzschild vacuum, ##...

While dimensional analysis is merely a guide, it obviously has to be followed up with seeing if it (obtained from a scalar formed from...

https://www.unitree.com/As2-W This retailer has a description, awaiting availability...

I saw that one. I was referring to the As2-W. Unitree doesn't list a price on their site that I could find. This isn't the exact...

(June 24 2026) Unitree R1 | Price from $4,900, Ready Stock https://shop.unitree.com/products/unitree-r1 ($4,900 USD)...

From a search https://www.google.com/search?q=%22square+root+of+the+Kretschmann%22...

This is the same company that made a splash on America's Got Talent recently. Unitree’s Robots Leave Simon Cowell SPEECHLESS! |...