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Isochronous Curves

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Re: Isochronous Curves

#51

Post by espeed »

quietbritishjim wrote: post #5
lifeisstillgood wrote: post #4

Is this off the back of a video of a 1970s Open University style presenter showing the properties of isochromus curves - i loved watching it and realised that these are national treasures of programs - and also was quite stunned by the assumption one would have a round empty tobacco tin lying around to do the experiment with - times do chnage :-)

I suspect it is... It turned up in my YouTube suggestions yesterday. Here's a link: https://youtu.be/eBc827pwKf0

And I suspect this is the common connection weighting the algo's recommendation...

Feynman's Lost Lecture (ft. 3Blue1Brown) [video] https://news.ycombinator.com/item?id=17927217

Re: Isochronous Curves

#52

Post by hexane360 »

agumonkey wrote: post #8
davidmurdoch wrote: post #3

Adam Savage builds a brachistochrone curve, which is the same curve as an Isochronous, just with potentially different starting/ending points, with Vsauce's Michael Stevens. It's a pretty bizarre phenomenon: https://youtu.be/skvnj67YGmw

They should build tautochronous pendulums. Or just add a spring bouncer on the end of the tracks so to enjoy multiple simultaneous bounces of different heights.

It's been done: https://en.wikipedia.org/wiki/Pendulum#1673:_Huygens'_Horolo...

>To make its period isochronous, Huygens mounted cycloidal-shaped metal 'chops' next to the pivots in his clocks, that constrained the suspension cord and forced the pendulum to follow a cycloid arc.[53] This solution didn't prove as practical as simply limiting the pendulum's swing to small angles of a few degrees.

Re: Isochronous Curves

#53

Post by lifeisstillgood »

escapologybb wrote: post #32
anonu wrote: post #30

Earlier quoted context omitted.

Engineer guy, slow mo guys, motherboard vice, primitive technology, smarter everyday

We have a winner! I'm subscribed to all of those.

It strikes me that, as YouTube puts its hand into the bag to pull out a marble, there are probably just a lot less marbles than we think, and certainly less marbles worth watching than we think, and far far less worth watching that have been made in the past week?

Additionally, if youtube was forced to only play videos where copyright was proven to belong to the owner of the channel, would it collapse completely.

Is that perhaps what is shrinking the bag of marbles ?

Which interestingly suggests that if we force youtube to actually respect IP, it would reward new creators of quality work more proportionately

Re: Isochronous Curves

#54

Post by pantalaimon »

monochromatic wrote: post #12
agumonkey wrote: post #8

Earlier quoted context omitted.

They should build tautochronous pendulums. Or just add a spring bouncer on the end of the tracks so to enjoy multiple simultaneous bounces of different heights.

For small displacements, pendulums are already approximately isochronous.

One of the first definitions of the meter was a pendulum with a period of 1s afaik

Re: Isochronous Curves

#56

Post by [deleted] »

lifeisstillgood wrote: post #4

Is this off the back of a video of a 1970s Open University style presenter showing the properties of isochromus curves - i loved watching it and realised that these are national treasures of programs - and also was quite stunned by the assumption one would have a round empty tobacco tin lying around to do the experiment with - times do chnage :-)

[deleted]

Re: Isochronous Curves

#58

Post by 3x »

vibrolax wrote: post #28
quietbritishjim wrote: post #5

Earlier quoted context omitted.

I suspect it is... It turned up in my YouTube suggestions yesterday. Here's a link: https://youtu.be/eBc827pwKf0

Wow, this is the first time I've become aware of other individuals in the same bubble. The video appeared in my recommended list yesterday.

Me too!

Re: Isochronous Curves

#59

Post by creato »

ehsankia wrote: post #43
creato wrote: post #41

Earlier quoted context omitted.

This comment is pretty interesting, it's almost indistinguishable from the "I work from home and make $10k a week!!" facebook posts plaguing comment sections... but it might make legitimate sense in context! The only way to find out is to click the link. edit: And it's legit!

Aren't half the comments on HackerNews basically "I work on a similar project, check out my project"? Although extra suspicious when it's a green user. Which to be fair, I'm entirely fine with as long as the projects are legitimate. In the world of programming, there are so many cool and useful libraries, services and tools out there that you have little hope to find out about them otherwise.

I actually wasn't even thinking about whether the poster I replied to was the owner of that project or not.

Re: Isochronous Curves

#60

Post by jshprentz »

quietbritishjim wrote: post #5
lifeisstillgood wrote: post #4

Is this off the back of a video of a 1970s Open University style presenter showing the properties of isochromus curves - i loved watching it and realised that these are national treasures of programs - and also was quite stunned by the assumption one would have a round empty tobacco tin lying around to do the experiment with - times do chnage :-)

I suspect it is... It turned up in my YouTube suggestions yesterday. Here's a link: https://youtu.be/eBc827pwKf0

Suggested for me also. Compare with yesterday's discussion on HN about YouTube's algorithms: "YouTube's tendency to push everyday users toward politically extreme content" https://news.ycombinator.com/item?id=17938181
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