In looking up stuff on Reynold Number in connection with the perpetual motion thread I came across this paper. I thought it might attract interest in this OFF TOPIC FORUM.
http://www.uam.es/personal_pdi/ciencias ... 201973.htm
Interesting lecture
Moderator: scott
Interesting lecture
Who is she that cometh forth as the morning rising, fair as the moon, bright as the sun, terribilis ut castrorum acies ordinata?
re: Interesting lecture
This calls for a video:E.M. Purcell in the article wrote:You can invent other animals that have no trouble swimming. We had better be able to invent them, since we know they exist. One you might think of first as a physicist, is a torus. I don't know whether there is a toroidal animal, but whatever other physiological problems it might face, it clearly could swim at low Reynolds number (Fig. 8).
First: https://www.youtube.com/watch?v=pnbJEg9r1o8
Second: https://www.youtube.com/watch?v=72LWr7BU8Ao
Marchello E.
-- May the force lift you up. In case it doesn't, try something else.---
-- May the force lift you up. In case it doesn't, try something else.---
Interesting demo of a half ring vortex. Pity about the commentator.
How about this one:
https://www.youtube.com/watch?v=mHyTOcfF99o
This one's good too. Note the rising air bubble vortex.
https://www.youtube.com/watch?v=9LGQ-jIet1s
How about this one:
https://www.youtube.com/watch?v=mHyTOcfF99o
This one's good too. Note the rising air bubble vortex.
https://www.youtube.com/watch?v=9LGQ-jIet1s