DaveC426913's latest activity

Vertical flashes are restricted by altitude (~10 miles). Horizontal flashes have been recorded as long as a whopping 515 miles.

Why do you say "radius b"? b is equal to R - the radius of the sphere. The beetle can't make to sphere spin any way except on a plane...

It is not obliged to rotate about a fixed axis, but it does, because there is no lateral forces involved. It becomes irrelevant that...

The "Span Soup" Chronicles: Trying to save a long, locked up Gemini chat User: on mobile, save html just as rendered with no JS or "BS"...

Text: 1) Let's solve a physics problem. There is a block hung on a string. A bullet shoots straight through the block and loses half of...

Now that I'm playing around with this cool toy, I'm finding other story points to explore: What would baseball look like? Pitcher...

That's very cool. I like the effect. I'm concerned about the "muzzle velocity". 20m/s is 45mph. My "research" suggests that 20mph is...

I've checked the above in Maxima, and I calculate the loop is about 10m high and 60-ish cm wide. That matches the aspect ratio of the...

1250m radius cylinder 0.5g surface gravity 0 altitude (i.e., on the rim of the cylinder) 10m/s fountain velocity 94.8° angle (my 100°...

I had thought about that. Different places in the colony would produce different results. Interesting locations might include: equator...

Thats how i got my two stream fountain diagrams: - set it to 55 degrees, take a screenshot, - set it to 125 degrees take a screenshot, -...

That doesn't make sense. An object launched antispinward will gain range , not lose it.

In Bakerloo did Ali Khan A stately hippodrome decree Where Alf the bread deliv'ry man Collided with a draper's van While doing sixty three.

Sorry, the calculator doesn't bare that out. I must have some parameters wrong.