Euler's Disk: 10% speed
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- Опубликовано: 18 сен 2024
- This is a two-angle video of an Euler Disk spinning down at 10% speed.
Watch it at normal speed here: • Euler's Disk: normal s...
From my original video on my main channel about Spinning Coins and the Euler Disk: • The Maths of Spinning ...
Watch at 2x speed for really smooth video!
This sounds like a radio signal that you would pick up somewhere in outer space.
Laurelindo sounds like the original xbox
now that makes me wonder if maybe the sounds we pick up from outer space are large contraptions like this built or naturally made in deep space going at different frequencies or different speeds 🤔
what if the noises we here from space are ships i mean the movement this is making looks like what a ufo's movement is supposed to be and i get this disk is on glass but what if space becomes like some sort of light glass coating when a saucer reaches a certain speed in space or maybe im just pretty high -u-
Could watch and listen for days.
Such satisfaction.
Watch (well, listen really) to the last thirty seconds at 0.25x speed.
"Woke up. Fell outta bed. Dragged a comb across by head. Found my way downstairs and drank a cup. And looking up I noticed I was late. Found my coat and grabbed my hat. Made the bus in seconds flat. Made my way upstairs and had a smoke. Somebody spoke and I went into a dream..."
+Dave Messer Why did you post Beatles lyrics?
+Madra listen to the end of the video. Last minute or so. Sounds like the crescendo of A Day in the Life
Dave Messer Oh, so it does. Nice catch.
*final chord*
I watched the last minute like 10 times at different speeds. That was so cool, I don't even know why xD
What an amazing sound. Can I use the sound of it for samples in music?
Help yourself!
standupmaths thanks
they don't own the sound of a euler's disk and they can't copyright the sound of a spinning metal disk on glass
Some painful data extraction gives some interesting results. The period time for the arrow (timing when pointing at camera) starts low and shoots up to infinity at the end. The period time for the wobble (timing when low against camera) does the opposite and starts high and ends tending to 0. Interestingly, the product of the two is near linear. I have no idea why that seems to work out so perfectly.
That sounds like some great data! Send me a copy if it's easy to. I am going to do a follow-up videos with an expert on these things.
standupmaths In that case I'll go through and extract some better data for you, I'll get back to you. Gotta love a lua scriptable media player for these kinds of things.
standupmaths
Ok, all done. I wrote up a document with some plots and some thoughts, the data is included as two csv files:
drive.google.com/file/d/0Bz_ZAyK9lvvFRUNCSHpLQS0ySzQ/view?usp=sharing
+Alcesmire This is good data extraction, but your analysis doesn't touch at all on the main theoretical relationship between the frequency ratio and theta. Finding a relationship between the two rates (and nothing else) is not so interesting, because they both depend on theta, as derived in the video, and theta, in turn, varies in some possibly complicated way. The main point of this video was to explain the frequency ratio in terms of theta, so I would be especially interested to see a theoretical theta calculated from your data.
+Daniel Walsh Agreed. This was some middle of the night, quick and dirty analysis. I weren't too inclined in deriving physical relations at that point; although, looking at it now I guess some analytical mechanics could do wonders here.
Euler disc. If you were to plot a graph of theta against time do you think it would be a nice exponential decay curve or would it be all wiggly? i.e. fluctuating with the disc's rotation. I suspect it would, in which case it will be a tad difficult to do any accurate math! No?? ;)
I could be wrong but it looks like you have it spinning on the ring side. The more rounded edge should be down and it will spin much longer.
That would be torture for my wife! I love it, but she cannot stand the sound.
I get at some point 7 wobbles per 1 revolution... the angle there should be 80 degrees it looks nothing like 80 degrees.
Ignoring some aspects of physics (I think friction would apply here) Then I think it would never "reach" the end, it's rotation would slow to a crawl, while it's wobble would tend towards infinity... that, again ignoring some aspects of physics, would mean that the sound would go up infinitely O.o
+Coolway99 without friction i'd predict it to just fall over imediatly (unless you start spinning it around an axis, that is exactly vertical. so its alined with the gravitational pull on the coin. then it would keep spinning without wobble, just like you would imagine it to keep spinning in outer space.)
but if you have even the slightes angle between gravitational pull and spinning axis, i dont see what if not friction would keep it from falling over.
also i'm not sure if it would make any sound, if it wasnt for friction.
all of this is just speculation.
made a quick simplified sketch, how i think it works. s12.postimg.org/ugz5y0vvx/friction.png
without the friction acting as the centripedal force i dont think it would stay upright.
but then again there is more than one axis, there is also the rotation axis in an 90° angle to the coin, and .. idk, i'm confused. its 1 am here and my brain is fried :P
Yes, I suspect to bring it to a stop you need to consider the viscosity of the air. But I've not looked in to it.
I also think friction is a key component :)... use lube? and then another with rubber for opposite comparison? or similars
WHere's the drop?
is it possible to stabilize the left video for a really mesmerizing video?
8:20 take us out mr. sulu?
A new way to play spin the bottle?
If I make a disco track, can I use this as video?
watch it with a little bit of kush
jackob sanram Why does anything stop? Friction, man. All that great noises you hear is the sound of one surface grinding against another.... energy being robbed from the disk; the disk and platform also should be heating up a teeny weeny bit.
why did it stop?
Physics.