Anyone like to venture a view on how the spinning ball on the cymbal works? Given this was early 80s, it must be physics rather than CGI.
https://www.youtube.com/watch?v=tY8B0uQpwZs
Enjoy the great music whilst you ponder on it!
Got a credit card? use our Credit Card & Finance Calculators
Thanks to gpadsa,Steffers0,lansdown,Wasron,jfgw, for Donating to support the site
Abracadabra
-
- Lemon Quarter
- Posts: 2380
- Joined: March 22nd, 2020, 7:27 pm
- Has thanked: 574 times
- Been thanked: 1162 times
-
- Lemon Quarter
- Posts: 1101
- Joined: November 4th, 2016, 1:25 pm
- Has thanked: 103 times
- Been thanked: 377 times
Re: Abracadabra
Well, its an umbrella rather than a cymbal, I guess the ball is lighter than it looks, the umbrella is being rotated clockwise and is being held at an angle so the part the ball is on is more or less flat. Its also being moved around by someone out of shot. I think that the material of the canopy has a little give. So its a juggling skill.
DM
DM
-
- Lemon Quarter
- Posts: 2380
- Joined: March 22nd, 2020, 7:27 pm
- Has thanked: 574 times
- Been thanked: 1162 times
Re: Abracadabra
dionaeamuscipula wrote:Well, its an umbrella rather than a cymbal, I guess the ball is lighter than it looks, the umbrella is being rotated clockwise and is being held at an angle so the part the ball is on is more or less flat. Its also being moved around by someone out of shot. I think that the material of the canopy has a little give. So its a juggling skill.
DM
Interesting. But the ball is spinning so why doesn't it fly off? Is it somehow counteracted by the spin on the umbrella? Or does it fail to grip the surface?
-
- Lemon Quarter
- Posts: 2380
- Joined: March 22nd, 2020, 7:27 pm
- Has thanked: 574 times
- Been thanked: 1162 times
Re: Abracadabra
Or is there an inner (spinning) ball inside a transparent (non-spinning) outer ball?
-
- Lemon Half
- Posts: 8170
- Joined: November 8th, 2016, 2:30 pm
- Has thanked: 2902 times
- Been thanked: 4001 times
Re: Abracadabra
MrFoolish wrote:Interesting. But the ball is spinning so why doesn't it fly off? Is it somehow counteracted by the spin on the umbrella? Or does it fail to grip the surface?
Looks like a simple circus trick to me. We're all assuming that the surface of the umbrella is sloping downwards toward the rim, because usually they are. Now, suppose that the umbrella is being held at a tilt so that the rolling surface is perfectly horizontal? (Or maybe even a little inward-tilting?)
That would cancel out the centrifugal effect, and all you'd have to do then would be to hold the camera at an angle, so as to make it look like a normal tilt in the video.
BJ
-
- Lemon Quarter
- Posts: 1101
- Joined: November 4th, 2016, 1:25 pm
- Has thanked: 103 times
- Been thanked: 377 times
Re: Abracadabra
MrFoolish wrote:dionaeamuscipula wrote:Well, its an umbrella rather than a cymbal, I guess the ball is lighter than it looks, the umbrella is being rotated clockwise and is being held at an angle so the part the ball is on is more or less flat. Its also being moved around by someone out of shot. I think that the material of the canopy has a little give. So its a juggling skill.
DM
Interesting. But the ball is spinning so why doesn't it fly off? Is it somehow counteracted by the spin on the umbrella? Or does it fail to grip the surface?
Dunno. Maybe there is some tether or something that we can't see, or maybe its the skill of the juggler.
Edit: http://www.juggling.org/help/circus-arts/umbrella.html
DM
-
- Lemon Quarter
- Posts: 2571
- Joined: November 4th, 2016, 3:36 pm
- Has thanked: 1109 times
- Been thanked: 1170 times
Who is online
Users browsing this forum: No registered users and 11 guests