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UCLA’s 1948 Mechanical Computer [video]

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Re: UCLA’s 1948 Mechanical Computer [video]

#11
post #9
post #6

will wear and tear of the mechanical parts affect accuracy?

Sure, just like a sloppy slide-rule or mechanical calipers or micrometer will give you iffy readings. Whether the accuracy change is a material one depends on what you are doing. Daisy chaining results would get you into meaningless territory quite fast I would imagine.

Oddly enough, I have a circular slide rule where the printed scale is not quite concentric with the sliding discs, so the thing has a built-in periodic error.

Re: UCLA’s 1948 Mechanical Computer [video]

#12
post #9
post #6

will wear and tear of the mechanical parts affect accuracy?

Sure, just like a sloppy slide-rule or mechanical calipers or micrometer will give you iffy readings. Whether the accuracy change is a material one depends on what you are doing. Daisy chaining results would get you into meaningless territory quite fast I would imagine.

Not unlike the way floating point rounding errors accumulate, in fact. The only difference is you can mitigate those to a degree by increasing the digits of precision, whereas that can't really be done on a mechanical computer.

Re: UCLA’s 1948 Mechanical Computer [video]

#15

I love the tone of amazement and excitement in the video. The images were amazing, but the tone really stuck with me. I wonder what could be done to bring back that type of mass amazement and excitement towards technology? When I think of the future I'm blown away by the possibilities of CRISPER, 3d printing, energy storage, block chains, driver-less cars, UBI, space exploration and more. We are advancing so quickly…

Your comment reminds me of Peter Thiel's 2x2 matrix of opptimistic/pessimistic x definte/indefinite

The US in the 50's and early 60's was definitely optimistic - everything is getting better soon because

https://www.linkedin.com/pulse/20140924171143-103827-zero-to...

Re: UCLA’s 1948 Mechanical Computer [video]

#16

Loved the V2 rocket launch at the end. Back in '48 we didn't have any rockets, but we did have Wernher Von Braun.

Which gives me an excuse to post a link of Tom Lehrer singing about Wernher von Braun: https://www.youtube.com/watch?v=QEJ9HrZq7Ro with the famous lines,

"'Once the rockets go up, who cares where they come down? That's not my department,' says Wernher von Braun."

Re: UCLA’s 1948 Mechanical Computer [video]

#17
post #9

Earlier quoted context omitted.

Sure, just like a sloppy slide-rule or mechanical calipers or micrometer will give you iffy readings. Whether the accuracy change is a material one depends on what you are doing. Daisy chaining results would get you into meaningless territory quite fast I would imagine.

Not unlike the way floating point rounding errors accumulate, in fact. The only difference is you can mitigate those to a degree by increasing the digits of precision, whereas that can't really be done on a mechanical computer.

You do that by increasing the physical size of the components

Re: UCLA’s 1948 Mechanical Computer [video]

#19
post #5

The narration is too much. That UCLA differential analyzer from 1947 was the peak of that technology. Earlier ones in the US go back to 1928. Wikipedia says UCLA had three of those. Probably for the Southern California aircraft industry. That was near the end of the line for the pure mechanical analog computers. Even the gun and missile guidance systems had electrical inputs and outputs. 1947 was late to be building…

+1 for the narrator using the traditional "Los-an-guh-lus" pronunciation instead of today's "Los-an-ju-less," popularized by The Brady Bunch and other 70's television programs.

I prefer "Los-an-ju-leez," as that was a common style among radio announcers. But all three are officially correct, according to an LA Times article I read years ago.

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