Recent content by Jonathan Scott

That doesn't sound like an ethical solution to that situation!

I think "exactly" is a clear enough condition here. It means that the result is three equilateral triangles and nothing else.

Ah, it was the fact that the redirect didn't pick up the unread point that confused me. Thanks for the clarification. I did go to "Feedback and announcements" before I posted to see if there had been some deliberate change, but I didn't see any announcement of that change.

At present, the first four threads I see in the General Discussion list have no date or last poster information (they show N/A), and do not automatically go to the next unseen post if I view them, but if I use an email notification link they go correctly to the new post.

What would you think if you got an email with this subject? "Server whether condition's" It was from the company supplying my wife's parents with dairy products, clearly intending to say that their deliveries today might be disrupted due to "severe weather conditions". Education here clearly...

"Columbium" surprised me but on checking I found that's a pre-1950 name for Niobium.

I just saw that physicist Kenneth Nordtvedt died on October 9th, according to his Wikipedia entry: https://en.wikipedia.org/wiki/Kenneth_Nordtvedt He had a fluent grasp of relativistic gravity theories, and is particularly known for using the Lunar Laser Ranging to check the equivalence...

In the late 1980s, working for a university, I wrote some terminal graphics routines for the IBM PC which among other things drew arcs without needing multiplication or division, and I was told I couldn't include them in the terminal program I was selling because the algorithms had been...

My primary concern is that PF users should try to comply with any license conditions, so 1 is much less important and 2 is not a valid excuse. Obviously the original fault lay with the Facebook poster, but as this was obviously XKCD and I was aware of the license (as I have used other excellent...

The terms of use for the XKCD website mean you should provide a link or give credit. That's XKCD 2848, "Breaker Box", https://xkcd.com/2848/

The triple-decker bus is the "Knight Bus" from the Harry Potter movies; there is one which can be viewed at the Warner Bros Studio Harry Potter tour, where we took our children some years ago: https://beingkinetic.com/2024/06/29/harry-potter-behind-the-scenes-the-knight-bus/ It doesn't look as...

According to Spacenews: My non-expert guess would be that some temperature parameter was exceeded as a result of the longer burn needed for the heavier XL version.

I always wondered how they managed "synchronous orbit above the south pole of the planet".

Thanks very much - that's much better than anything I found so far. But it's a lot to digest to get the value of a simple constant! Their model for the method of acceleration seems very contrived, being a charge distribution inside the shell. I know that constant linear acceleration in free...

Linear frame dragging is the effect predicted by General Relativity that if a gravitational source is accelerated, this produces a small gravitational induction effect on other objects which tends to accelerate them in the direction of the source acceleration. The induced acceleration is a...