Recent content by Redbelly98

Well, since it got brought up, here's an anecdote my Dad told me about that. He was 20 years old in 1938, and at a friend's house listening to the War of the Worlds broadcast. He said that, at some point, he said to his friend "I wonder if anyone believes this is really happening."

I read elsewhere that they actually had the rocket ready within the 24-hour requirement set by the Space Force. At that point, it was a matter of waiting for the desired orbit's next available launch window, which was several hours later.

Were you seeing them yourself in widespread use? I'm not saying they didn't exist, but it can take a while for new things to catch on. Or they can catch on in some parts of the country (or world) well before others.

I'm just recalling what I was seeing in arcades and bars in the 80s. I specifically remember this one, which this site claims came out in 1987. That jives with my seeing and playing it around 1987-88.

I would imagine that spherical aberration is much worse with the glasses pointing the wrong way. There's a reason why both the inner and outer lens surfaces both generally have the concave side toward your face.

Little perplexed by this statement. Why were they unable to make additional suits in an appropriate size?

Couple of interesting launches coming up this week. March 22, 4:45 a.m. EDT: Rocket Lab will attempt an ocean recovery of their Electron rocket. March 22, 10 pm - March 23, 1 am EDT: Relativity Space plans another attempt at the maiden launch of their Terran 1 rocket. This would be the first...

Digital pinball machines? Did not know such a thing existed. And I was around in the 80s, when electromechanical pinball machines and early video games coexisted for a while.

Argh, sorry. I missed that after seeing the "3.2e-17 eV" referred to in Post #1.

You can google either real gas or van der Waals equation, and you'll find how the effects of particle size and interparticle forces can be accounted for.

However, "V" is not a unit of energy. It looks like people are assuming that the "50 eV beam" consists of electrons, or of some particle whose |charge| is equal to e. Technically, this was not stated and cannot be assumed, so the OP's confusion seems to be a legitimate one. That being said, it...

About the payload mass of that Stoke Space rocket being developed . . . Okay, I found a number (1.65 tonnes) in an Eric Berger article from last October, which I just read this morning. Smaller than what I/we had guessed, but comparable or slightly more than the current / soon-to-launch...

Super Heavy successfully ran 31 of 33 engines in today's test. Elon says that's enough to get to orbit, according to an update to this article from Eric Berger: About that Japanese rocket, always cool when a new rocket has a debut launch. Hoping Relativity Space can launch RS1 sometime this...

Ah, okay. Yes, for the purposes of doing partial derivatives w.r.t. other variables, that's right.

Perhaps you "misspoke" here? ##t## is the time variable, as you must be aware?