:tv: Computer for Apollo
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This is a long but (I thought) really interesting documentary on the building of the Apollo spacecraft computers. The first part is introductory, but then it gets right down into nitty-gritty details of how the fixed program was wired into the system and the equivalent of a circuit board was done.
...in a time before LSI, before MSI, before printed-circuit boards, almost before transistors.
Well worth the watch how they did "it" almost before "it" was a thing.
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The thing that always impresses me most is they landed on the Moon with less computing power than a modern dishwasher
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HA! That just proves the moon landings were FAKE! And jet fuel CAN'T MELT STEEL! IT'S ALL LIEZZZZZ!!!!1111
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And jet fuel CAN'T MELT STEEL
Anyone who says that seriously is guilty of at least one major misunderstanding.
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The thing that always impresses me most is they landed on the Moon with less computing power than a modern dishwasher
What that says to me is that you don't actually need very much computing power to go to the Moon! (Admittedly, they had probably precalculated most of what they needed ahead of time, like burn times, trajectories, fuel requirements, and so on.)
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Also takes the term "testing in production" to a whole new level...
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What that says to me is that you
don'tactually need very much computing power togo to the Moonrun Discourse!Filed Under: Fixed the true thing you should have learned here!
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It's true, though. Jet fuel can't melt steel. It can damage it to the point where it's incapable of holding up its own weight, but it can't melt it.
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@NedFodder said:
And jet fuel CAN'T MELT STEEL
Anyone who says that seriously is guilty of at least one major misunderstanding.
If you seriously think that jet fuel can melt steel then you're crazy.
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There's also this one from a series on the whole project: https://www.youtube.com/watch?v=xQ1O0XR_cA0. The other episodes are worth watching too. I just robbed you of 4 hours.
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It's true, though. Jet fuel can't melt steel. It can damage it to the point where it's incapable of holding up its own weight, but it can't melt it.
Your very last sentence explains why it's a meaningless thing to say. Iguana scales can't melt steel, either, but nor can they damage it to the point where it's incapable of holding up it's own weight.
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If you seriously think that jet fuel can melt steel then you're crazy.
Seems y to me.
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Jet fuel burns up to about 1500F, but it takes at least 2500F to melt steel.
So no, jet fuel cannot melt steel beams.
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That's beside the point that @FrostCat was trying to get to.
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Look, if I said avocados can't melt steel beams, you wouldn't say "but I can melt a steel beam if I shoot this high-powered laser at it while eating an avocado".
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That's beside the point that @FrostCat was trying to get to.
Yeah. He never even said anything about burning it.
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That's beside the point that @FrostCat was trying to get to.
If this were anyone but one other person, I'd point out the .
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Eh, flag away; we only have another ten days of Discourse left, so why not?
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Eh, flag away; we only have another ten days of Discourse left, so why not?
After all the fuss you and your counterpart made?
Besides, I already flagged someone else, and the mods aren't doing their job.
You do understand the context in which I was speaking originally, right? Just in case, "the fact that fire can't melt steel is irrelevant to the toppling of WTC1 and 2 on 9/11/01, because the buildings didn't collapse due to that; instead, they collapsed because the heated steel lost its structural strength and thus the ability to hold up the building's weight." As I've pointed out on this very forum a couple of times, this was, of course, all well-known long before then, and 911 Troofers are all stupid.
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Besides, I already flagged someone else, and the mods aren't doing their job.
Liar. I responded to your flag.
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Liar. I responded to your flag.
Really? Not that I don't believe you but I didn't get the green circle.
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Lack of a green circle is on Discourse.
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After all the fuss you and your counterpart made?
I changed my mind.You do understand the context in which I was speaking originally, right?
Pretty much, yeah. And while I'm no structural engineer, I find the idea that there had to be thermite or something planted in the buildings to be, in a word, retarted.
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I think y'all are violently agreeing.
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This post went off the rails in post #2, but FWIW I saw this documentary a while ago and I was just as fascinated. The fact that they essentially wove the program in to the computer is amazing. As is the fact that today I have many multiple of the entirety of the computing power of NASA in the cell phone in my pocket. Absolutely amazing what they were able to accomplish with so little.
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Lack of a green circle is on Discourse.
Sure, but I don't know how you can expect me to know you did anything if Discurse doesn't tell me you did! (And I didn't see any edit of bz's post saying you'd badged him.)
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Sure, but I don't know how you can expect me to know you did anything if Discurse doesn't tell me you did! (And I didn't see any edit of bz's post saying you'd badged him.)
It's not whooshy enough to badge with just one flag.
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And while I'm no structural engineer, I find the idea that there had to be thermite or something planted in the buildings to be, in a word, retarted.
Essentially all Trooferism is ignorance, sometimes aggressive ignorance in the case of people who refuse to be educated, and not counting malicious stuff like "the Jews did it for some reason I can't explain".
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You can just eyeball it in Kerbal Space Program, but that does take a lot more fuel than doing it properly with the waypoints.
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TIL that microlithography and PCBs apparently replaced "girls".
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What that says to me is that you don't actually need very much computing power to go to the Moon! (Admittedly, they had probably precalculated most of what they needed ahead of time, like burn times, trajectories, fuel requirements, and so on.)
It takes hardly any computer power to do astronomic calculations and run an interface like that one had. It wouldn't surprise me if 99%+ of today's processor time is spent on I/O and UI. (Don't know if anyone has measured that.)
Jet fuel burns up to about 1500F, but it takes at least 2500F to melt steel.
So no, jet fuel cannot melt steel beams.
Sorry to screw up a good flame war with facts, but see the yellow line below (from here); structural steel loses 70% of its strength by 1100°F. And that should be enough on the subject.
#Now (1) watch the movie and (2) give me Topic Likes. I deserve them after this BS.
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Sorry to screw up a good flame war with facts, but see the yellow line below (from here); structural steel loses 70% of its strength by 1100°F. And that should be enough on the subject.
Thanks for agreeing with something we all agree on?
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Thanks for agreeing with something we all agree on?
Then stop rattling about melting. Melting is irrelevant.
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WHOOSHES CAN'T MELT STEEL BEAMS! <valid>
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No, but cutie stares can. Has anyone interrogated the Care Bears about this?
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Has anyone interrogated the Care Bears about this?
I always thought there was something off about Terrorist Bear...
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Jihaddi Bear scared me as a kid
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..be, in a word, retarted.
I totally missed this the first time. So, ummm..., retarted: is that like when a tart is no longer a tart, but becomes one again?
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retarted
adjective- Having the property of being so retarded it is physically impossible to spell 'retarded'
- The @accalia'd version of 'retarded'
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- why are you replying to me?
12342411253256. Yes. Just like a refridgerator takes stuff that was fridgerated, became defridgerated and wants to be fridgerated again.
- why are you replying to me?
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Reply-accident. Sorry. Thought I was on the original, but I guess I'm retarted.
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Frankly, I would be more impressed if we did it now. As over-engineered as most shizz is, and how crash and hang-prone everything is, I would be TERRIFIED to have a "modern" computer running the damn ship on a trip to the moon o_O
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@Vaire said in Computer for Apollo:
As over-engineered as most shizz is, and how crash and hang-prone everything is, I would be TERRIFIED to have a "modern" computer running the damn ship on a trip to the moon
I'm sure you'd be just fi… WHAT?! INSTALLING WINDOWS 10? “PLEASE WAIT WHILE SETTING A FEW THINGS UP” OVER THIS INTERNET CONNECTION?! AAAAAaaaaa…
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@dkf The Martian would have been a very different story if after getting the rover running he'd had to wait 6 months for Windows 10 to download over an interplanetary connection