Rolling Ball Clock - Objectivity 138
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- Опубликовано: 23 окт 2017
- Who needs a pendulum when you have a rolling metal ball?!
More on 23andMe: www.23andMe.com/Objectivity
Featuring Alan Midleton from The British Horological Institute Museum speaking with Brady.
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Films by James Hennessy and Brady Haran
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"There was a good deal of blasphemy that took place."
I cannot imagine what sort of naughty words Alan Middleton might utter upon the introduction of his forearm to a spire
I am impressed by the clock. Thanks royal society. And objectivity.😊😊
Would like to see another episode with Mr. Middleton in the future, including some more of his anecdotes.
Clock on his tie even - this dude really like clocks! Interesting video as usual :)
Is the second rolling-ballclock more accurate than the first? I'd imagine the skeleton plate reduces friction and dirt buildup, and being built in the last 20 years or so would mean more precise mechanics etc.
No clock is perpetual of course, but there is a kind of clock that never needs winding. They contain ingenious mechanisms that extract energy from variations in air pressure, kind of elaborate barometers. The institute probably has at least one specimen of such a clock, it would be great if a video was made about them.
Francois Lacombe I do believe you are talking about the Jaeger-LeCoutre Atmos clock.
Could something like that be considered "functionally perpetual" if that makes sense? Like is there any likely situation that would cause that mechanism to stop? Why isn't something like this used for energy aside from clocks? Is there just not enough energy to be gained from barometric pressure change?
+Derkman96 - You're right, there simply isn't enough energy in the air to run anything requiring more torque than a clock. It's not a perpetual motion machine because it requires external energy input.
"Well while I was winding the clock I drew my arm away rather rapidly... and... well there was a good deal of blasphemy that took place!" What a posh way of saying "I cut my arm open and swore a lot"
Brady, you cannot make enough videos about these clocks. This is absolutely fascinating and I can't wait till you release another one. Could you perhaps feature the most accurate clock at the institute?
Wouldn't have heard of this channel if not for listening to Hello Internet. It's really good.
I've had a really clever ball-based clock design waiting in my head for decades, but I don't have the engineering skills to build it. Don't really have the time either. One day, when I'm retired...!
Love it, we need to see more, more I tell you!
I've got the shits, any tips anybody?.
There is one of these in the Science Museum, too. Was always about 2 seconds too slow for every 30 second interval
I'm sure with modern manufacturing and design you could make a much more accurate model of a similar mechanism but considering what it is it's really not that bad
The problem with the mechanism is not the old manufacturing or design, the problem is the randomness and unpredictability of the ball meaning that the mechanism will never be very accurate.
I have always enjoyed time pieces. The more unique the more better. Lol. Are we ever going to see the Harrison clocks?
I do love the clock museum. :-)
The clock guy in this episode was played by Ed Harris.
I’ve seen these clocks on eBay, they have a great novelty value to them.
I can see why it’s a favorite. It’s really cool :-)
If any of you are interested in awesome clocks, Chris from Clickspring makes one from scratch. He makes a large-wheel clock in a series of videos.
What happens if you hermetically seal the clock to keep dust out?
(As for winding: maybe you could do something with magnets or something of that sort.)
No! I caught up with the newest video. Now I must wait another one like any good fan does!
This was really interesting, after I watched the video I checked to see if I could visit, shame they aren't open again until spring 2018.
They are open this Sunday 29 October for a special event on "Fall-Back day".
The pointy "finials" are clearly to get the blood sacrifice that the spirits driving the clock require in order to continue their labors.
Is that the same William Congreve who wrote _The Way of the World_ ?
I really like the way this clock workes. It's a shame it isn't acurate...
Oh God, all those naked clocks! You can see inside them! This episode is definitely not advertiser friendly. Disgusting Brady!
First derangements, now this? What a degenerate.
there goes monetization
I want to find a nice museum where I can see an atomic click. With a 10MHz output that they'll let me plug an osciloscope in to. I have a OCXO frequency standard that needs calibrating.
Ok, whenever you want, you can do more clock videos.
Why didn't you show them being winded?
If you have a pendulum of 1m, you get a half frequency of a second. This was one of the first proposition for the definition of the meter.
No springs!!
Beware the Killer Finials!
One should ALWAYS mind the pointy bits.
I want to touch the points.
You realize this is the second video you have posted recently with a set of smoothly swinging balls?
I want one.
Where's Keith ?
A rolling ball clock could be accurate if you had some electronics and a way to trim the mechanical parts.
Wait, so on those ball clocks, does corner to corner count as 1 second or is it corner to halfway point?
it's 30 seconds from one end to the other
you can see individual seconds on the halfway points, but the clock doesnt count them i think
End to end plus the swing transition period is thirty seconds. More or less.
Why would you make a clock and then place spikes all over it?
It helps stop people faffing with it :)
what if i have more than 23 chromosomes
If the instrument was made so recently, why not dull the pointy bit.
I think you've been demonetised again Brady!
First