Brad Nelson
Administrator
עַבְדְּךָ֔ אֶת־ הַתְּשׁוּעָ֥ה הַגְּדֹלָ֖ה הַזֹּ֑את
Posts: 12,239
|
Apollo
Jul 17, 2019 18:14:32 GMT -8
Post by Brad Nelson on Jul 17, 2019 18:14:32 GMT -8
I’ve been reading a lot of articles about Apollo because of the upcoming (ongoing, really) anniversary of Apollo 11. I’ve read many interesting factoids, particularly on the Apple News app. In fact, what I mostly understood back then was the spectacle of it all. Through subsequently reading, I’ve found many more things of interest than was spoon-fed to us at the time by NASA’s PR machine. The details are endless. The space program was a huge program. And one thing I’m sure I never encountered before is rope memory: That just blows my mind. If you want to find out more about the Apollo Guidance Computer, there is a book by Frank O’Brien: The Apollo Guidance Computer: Architecture and Operation. If you don’t want to delve that deeply, you can read this article from The Atlantic. (A subscription may be required.) One of the things this article in The Atlantic purports to debunk is that the Apollo’s guidance computer was but a toy compared to today’s computers. Of course, in terms of processing power and memory, this is true. But the author makes the case that the programming was so complex, elegant, and robust that it ranks with anything being done today. But ROM made by hand-winding wire around magnetic cores? I’d never heard of such a thing. Way cool.
|
|
|
Apollo
Jul 17, 2019 19:15:49 GMT -8
Post by timothylane on Jul 17, 2019 19:15:49 GMT -8
I don't know about wrapping wire around cores, but core memory involved threading 4 different wires through each ring. That's why core memory was so expensive, and probably why today they've replaced it in so many (perhaps all) situations with transistors. One disadvantage of that is that the transistors, unlike the cores, don't have permanent memory. You have to load them up every time you turn on the computer. The main reason cores replaced previous approaches is because they were a lot faster, with virtually instant access to every byte/word.
Incidentally, one article I read recently has an interesting tidbit about Apollo 11. Buzz Aldrin was an elder at his Presbyterian church, and was given permission to take communion on the Moon. So the very first meal on the Moon was his bread and wine. This was before they exited the lander, and during a period of silence (probably so that they didn't have more trouble from Madalyn Murray O'Hair). The link is:
|
|
Brad Nelson
Administrator
עַבְדְּךָ֔ אֶת־ הַתְּשׁוּעָ֥ה הַגְּדֹלָ֖ה הַזֹּ֑את
Posts: 12,239
|
Apollo
Jul 18, 2019 8:39:53 GMT -8
Post by Brad Nelson on Jul 18, 2019 8:39:53 GMT -8
At the earliest opportunity, I plan to watch the Apollo 11 documentary by Douglas Todd Miller. You can stream it (or buy it) from various sources, including Amazon Prime Video. I’ll probably rent it from VUDU. Considering that renting is is about $5.99 and buying is $7.99, buying is a definite option. I’ve heard good things about this and I’m pretty sure it’s a can’t-miss documentary. It includes a lot of never-before-seen 70 mm color footage. The reviews at Amazon suggest that this is an artfully done documentary, including the accompanying music. I like the idea of no narration. Trailer
|
|
|
Apollo
Jul 18, 2019 8:53:03 GMT -8
Post by kungfuzu on Jul 18, 2019 8:53:03 GMT -8
Those are beautiful photos. One of my favorite films of all time is a close up of the Saturn V slowly lifting off the launch pad. I can see the connecting lines dis-connect and fall away from the rocket and ice accumulations breaking away and sliding down the missile's side. It is stunning.
|
|
Brad Nelson
Administrator
עַבְדְּךָ֔ אֶת־ הַתְּשׁוּעָ֥ה הַגְּדֹלָ֖ה הַזֹּ֑את
Posts: 12,239
|
Apollo
Jul 18, 2019 8:56:44 GMT -8
Post by Brad Nelson on Jul 18, 2019 8:56:44 GMT -8
Apparently there is some kick-ass footage of just that in HD.
|
|
|
Apollo
Jul 18, 2019 8:59:21 GMT -8
Post by timothylane on Jul 18, 2019 8:59:21 GMT -8
A Saturn V lifting off -- well, I'm sure we all saw that some time or another 50 years ago. Apparently the plans for the Saturn V are no longer available, which is why we have to come up with some new rocket to strt us for the Moon (or Mars) if we're to go there. They do have a Saturn V at the Alabama welcome center on I-65 (northern border).
|
|
Brad Nelson
Administrator
עַבְדְּךָ֔ אֶת־ הַתְּשׁוּעָ֥ה הַגְּדֹלָ֖ה הַזֹּ֑את
Posts: 12,239
|
Apollo
Jul 18, 2019 13:12:04 GMT -8
Post by Brad Nelson on Jul 18, 2019 13:12:04 GMT -8
That sucks. The first thing I was going to do when I had Elon Musk money was to build a couple of those and shoot them off on the 4th of July.
It is interesting to note (as I read recently) that they had the hardware completely built and available for what I think was the two cancelled Apollo missions. One set of Saturn V's boosted Apollo-Soyuz, I think. Maybe someone could dig around a bit and see if there is still one sitting around or if it has already (as I think it has) been turned into a museum piece. It's gotta be that one in Alabama that you mentioned.
|
|
Brad Nelson
Administrator
עַבְדְּךָ֔ אֶת־ הַתְּשׁוּעָ֥ה הַגְּדֹלָ֖ה הַזֹּ֑את
Posts: 12,239
|
Apollo
Jul 20, 2019 8:21:40 GMT -8
Post by Brad Nelson on Jul 20, 2019 8:21:40 GMT -8
|
|
Brad Nelson
Administrator
עַבְדְּךָ֔ אֶת־ הַתְּשׁוּעָ֥ה הַגְּדֹלָ֖ה הַזֹּ֑את
Posts: 12,239
|
Apollo
Jul 20, 2019 9:03:34 GMT -8
Post by Brad Nelson on Jul 20, 2019 9:03:34 GMT -8
One of the challenges of online communication is having something to say. One of the rules of human nature is that when something becomes cheap and easy, it becomes cheap and easy. If the only way you could get your written word published was via a Letter to the Editor, chances are you would polish that letter to a shine before sending it in the mail…with no assurance it would even be published. Now people routinely publish what they are having for breakfast. I rest my case. But this does present an interesting challenge in terms of what to say about Apollo 11 that, while perhaps even true and meaningful, won’t cause one’s eyes to glaze over because you’ve heard it all so many times before. One thing I will say is that the entire space program was too big for one to have understood much more than the tip of the iceberg. You can research any one element (such as all the geology schooling — classroom and field trips — that Aldrin, Armstrong, and Collins undertook) and it would fill a book. Kennedy offered a challenge. We spent a lot of money. We sent men to the surface of the moon and returned them safely. That’s the equivalent of “In the beginning, God created the heaven and the earth.” A big project indeed. But the details must have been enormous. That there are plenty of people who deny it happened at all, or parse it as some kind of “anti-woman” thing, is a sign of how badly we are cracking up as a people. Obama’s mandate for NASA was to have Muslims feel good about their contributions to science. Can man have a grand purpose other than grievance or elevating oneself by picking at the bones of America? NASA is doing some good work with robotic exploration. The Hubble might have been the best bang-for-the-buck bit of space science ever done, even while the International Space Station is the worst. Thinking back, when they started hitting golf balls on the moon and singing “I was strolling through the park one day,” lunar exploration had jumped the shark. The grand purpose was gone. It became perhaps a fine (and expensive) geological expedition. And although we might have learned something about lunar origins, the majesty was gone. These trips had become trivialized. One can thus respect the attitude of Aldrin and Armstrong. “One small step for a man…” and “Magnificent Desolation” are memorable quotes, as is Aldrin’s quip about not locking the LEM door on his way out. There’s nothing wrong with a little well-placed humor. Before the golf balls and the singing there was an Apollo trinity that remains highly moving and meaningful: The first is the photo, Earthrise, taken by astronaut William Anders on December 24, 1968, during Apollo 8. That visually brought an entirely new perspective to our home planet. OriginalThe second part of the trinity also occurred on December 24, 1968, when the crew of Apollo 8 (Bill Anders, Jim Lovell, and Frank Borman) took turns reading from the Book of Genesis as they orbited the moon. It was the most-watched television show up to that time. The third stool of the astronautical trinity was, of course, Neil Armstrong’s “One small step for a man…”. It marked the boundary of “We’ve done it.” Interestingly, in American fashion, at the culmination of the winning of the space race we took a universalized approach. Armstrong read from the plaque placed on the descent stage of Lunar Module which included the words: “We came in peace for all mankind.” Humility combined with triumph? Does anyone of have the kind of class today? With Apollo, we look back at a time that was by no means perfect. But it seems to me in many ways it was a damn sight better than we are today. “And God bless all of you, all of you on the good Earth.”
|
|
|
Apollo
Jul 20, 2019 9:45:12 GMT -8
Post by timothylane on Jul 20, 2019 9:45:12 GMT -8
Well, I certainly don't send out what I'm having (or in this case had) for breakfast. But if you really want to know . . .
Actually, deniers of the Moon landing have existed, in all probably, ever since it happened. It's an aspect of the ultra-cynicism that goes: If they lie about some things, then everything they say is a lie. The leftist 60s counterculture believed nothing from the government. (Ours, anyway.) As for those who cavil about it, again there were always those who argued that the money would have been better spent on welfare. I doubt they said it before Nixon became President, and especially not while JFK was.
As for those who take it down today, partly that's hatred of America and various other undesirable aspects of leftist ideology. And partly it's the fact that those who can't create often prefer destruction, which is so much easier. (Just ask any jihadist.)
That was a nice Moonrise photo. I may not have seen this particular one, but I've certainly seen similar ones in the same vein (a view of Earth from the Moon).
|
|
Brad Nelson
Administrator
עַבְדְּךָ֔ אֶת־ הַתְּשׁוּעָ֥ה הַגְּדֹלָ֖ה הַזֹּ֑את
Posts: 12,239
|
Apollo
Jul 20, 2019 11:13:56 GMT -8
Post by Brad Nelson on Jul 20, 2019 11:13:56 GMT -8
I find it hard to wrap my mind around that. It’s more than fine to be skeptical of any scientific theory. But it should occur to anyone that if landing on the moon was a fraud, the Russians would have spilled the beans on it long ago. I will say it’s become reflexive to be a “smarty pants,” to denigrate whatever beliefs, facts, or data are preexistent. Yes, surely a part of that stems from a cynical habit of thinking wherein one thinks it’s all a lie. But I think the real cause is Ego-meets-Ignorance. The fact is, people these days are not very well educated about the basics. The first thing to go upon being marginally educated is the pleasing thought that one knows it all. When faced with the vastness of human experience, history, and knowledge, a more honest reaction is “Geez….I don’t know much about anything at all.” There are still many people doing extraordinary things in science, mathematic, engineering, technology, manufacturing, etc. Truly amazing things. But there is a growing Slobocracy of people who want everything in shortcuts. They don’t want to work for anything, including knowledge. For them, conspiracy theories are instant access to a PhD. They don’t have to actually know anything. All they need do is smugly sit back and announce to the world that something that is a great accomplishment by others is but a lie. Yes, Earthrise is a nice photo. As noted, it was taken by William Anders of Apollo 8. Here's a higher resolution image of it at a NASA page. Here's a good article on the subject: 'Earthrise' Picture—How Apollo 8's Famed 1968 Photo Was Made
|
|
|
Apollo
Jul 20, 2019 11:19:36 GMT -8
Post by timothylane on Jul 20, 2019 11:19:36 GMT -8
Actually, I think the skepticism was mostly directed against the government (presided over by Tricky Dick Nixon), but there problem was also some scientific skepticism. I would assume most actual flat-Earthers would also have disbelieved the Moon landing.
|
|
Brad Nelson
Administrator
עַבְדְּךָ֔ אֶת־ הַתְּשׁוּעָ֥ה הַגְּדֹלָ֖ה הַזֹּ֑את
Posts: 12,239
|
Apollo
Jul 20, 2019 13:08:57 GMT -8
Post by Brad Nelson on Jul 20, 2019 13:08:57 GMT -8
Also of interest to Amazon Prime Video subscribers is the very good documentary, Moon Shots: Inside the Lost Apollo Archive. If you're not a subscriber, it's available for renting in HD for a very reasonable $2.99. I think it's worth it. You get a good overview of the Apollo missions and some stunning panoramic views from some of the later Apollo missions.
|
|
Brad Nelson
Administrator
עַבְדְּךָ֔ אֶת־ הַתְּשׁוּעָ֥ה הַגְּדֹלָ֖ה הַזֹּ֑את
Posts: 12,239
|
Apollo
Jul 20, 2019 13:10:28 GMT -8
Post by Brad Nelson on Jul 20, 2019 13:10:28 GMT -8
Re: Apollo deniers. I've read a half dozen articles of late. And they're all talking about what some people today believe. This has nothing to do with Nixon.
|
|
|
Apollo
Jul 20, 2019 14:21:48 GMT -8
Post by timothylane on Jul 20, 2019 14:21:48 GMT -8
I was thinking in terms of the original deniers. Obviously, this would be different today. I suspect that as with many cults, they pick it up from others, often their parents. You're probably right about Nixon being unimportant to modern skeptics, most of whom probably know virtually nothing about him.
|
|
Brad Nelson
Administrator
עַבְדְּךָ֔ אֶת־ הַתְּשׁוּעָ֥ה הַגְּדֹלָ֖ה הַזֹּ֑את
Posts: 12,239
|
Apollo
Jul 21, 2019 8:59:56 GMT -8
Post by Brad Nelson on Jul 21, 2019 8:59:56 GMT -8
In Moon Shots: Inside the Lost Apollo Archive (available on Prime Video), they tick off some of the screw-ups. I’d forgot about most of these. • Apollo 12: The TV camera was inadvertently pointed at the sun which burnt out the videcon tube. • Apollo 15 (which also included the first lunar rover): The stamp franking scandal. Here’s the Wiki article on that. • Apollo 16: This is my favorite of the mishaps. Who has’t done something like get tangled up in a cable? Worse, they have it on film. Start this video at about the 26:20 minute mark where you can see his foot catch a cable. I'm sure they practiced deploying this experiment on earth. In the documentary they talked about procedures for re-attaching the cable but it would prove to take too long. I’m going to side with the astronaut here. Those suits must have been very cumbersome. To have a little wire hanging around was not a good idea. To my mind, that was an accident waiting to happen.
|
|
|
Apollo
Jul 21, 2019 20:43:43 GMT -8
Post by kungfuzu on Jul 21, 2019 20:43:43 GMT -8
I just recalled that I have one of these Apollo 11 patches somewhere in one of my boxes stacked around my house.
|
|
Brad Nelson
Administrator
עַבְדְּךָ֔ אֶת־ הַתְּשׁוּעָ֥ה הַגְּדֹלָ֖ה הַזֹּ֑את
Posts: 12,239
|
Apollo
Jul 21, 2019 20:53:47 GMT -8
Post by Brad Nelson on Jul 21, 2019 20:53:47 GMT -8
We need a photo for proof! But that's quite a souvenir.
|
|
|
Apollo
Jul 21, 2019 21:07:58 GMT -8
Post by kungfuzu on Jul 21, 2019 21:07:58 GMT -8
I figured you would demand one, so I have been trying to recall where it might be. I seem to have a vague recollection of seeing it in the last year or so, when going through some of the boxes in my office.
|
|
|
Apollo
Jul 21, 2019 21:14:01 GMT -8
Post by timothylane on Jul 21, 2019 21:14:01 GMT -8
I had some memorabilia picked up on my various visits to the NASA facilities in Cape Canaveral, Houston, and Huntsville, but they all got lost or left behind in our house. Most regrettable.
|
|