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Section Forums
16736 threads, 322037 comments
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09/26/2021
by SolarEagle
Was it the center of the universe? I've always wondered about that...
Now it's clear that nobody knows anything....haha
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09/24/2021
by K_Fry
Burning Lichtenberg figures into wood, as decoration, is something of a fad. I have watched as much as I can stand of many videos on the subject, and...
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09/19/2021
by Sid_Sidow
With the passing of Sir Clive this week, it certainly takes me back to my beginning of understanding computers. I bought a kit of the ZX-81 and solder...
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09/19/2021
by SSCpal
School busses are only used for a few hours/day; the rest of the time they sit, so recharging is not a problem. And in use they don't go far, so range...
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2110 threads, 4287 comments
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737 threads, 12520 comments
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See all Blog Entries
Section Blogs
404 blog entries, 30155 comments
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08/31/2021
It's 1870 and the Transcontinental Railroad has just been completed.
A Central Pacific steam locomotive leaves San Francisco at 15 miles per hour at...
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07/31/2021
You are the proud owner of eight billiard balls. You believe one of them is defective, and weighs more than the others.
You are also the proud owner...
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1 blog entries, 7 comments
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02/21/2021
by ahorner_22
It’s no secret that 2020 was a tough year. People experienced challenges they’ve never experienced before. For anyone running an essential...
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Other Blog Entries of Interest
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10/04/2020
posted in Relativity and Cosmology
by Jorrie
When I first heard that there is no easy exact formula for the circumference of the standard ellipse, I found it hard to believe. I had already learne...
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08/24/2020
posted in Relativity and Cosmology
by Jorrie
In my prior Blog post on the Einstein equivalence principle, I have not identified important values, like the mass of the black hole, real distances a...
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08/17/2020
posted in Relativity and Cosmology
by Jorrie
One day after Alice's arrival at Deep-2, she and Dot sat down for the change of shift briefing - recall that Dot must soon return for Home leave. Whil...
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08/11/2020
posted in Relativity and Cosmology
by Jorrie
This is a fanciful little scenario for 'flexing the muscles' of acceleration in space-propertime a little and so giving a better intuitive feel for th...
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08/07/2020
posted in Relativity and Cosmology
by Jorrie
I have introduced the idea of Epstein Space-Propertime Diagrams (ESPD) in my previous Blog post. To refresh, here is the ESPD's structural relationshi...
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