11 ms·

I’m assuming this is being posted due to this recent popular video, which I think is a very well made demonstration of how the valve works: https://www.youtube

• ladberg 7y ago
  While this is a very cool video, I don't think it demonstrates a Tesla valve that well. In this example, the flame moving isn't really the same thing as a fluid moving with the exception of the gas expansion within the tube that he mentions. Instead, the flame basically does a BFS (to put it in programmer terms) of the tube instead of actually moving the fluid through the tube. It just also works out that the gas expanding pushes it in the right direction due to the design of the valve.
  • davidkuhta 7y ago
    BFS is big flame search for anyone unfamiliar with the term.
    • hvidgaard 7y ago
      You deserve the upvote for that joke. Well done. (For the uninitiated, it's Breadth First Search).
  • yellow_lead 7y ago
    I agree and I don't see why he couldn't have just used a smoke bomb. I don't see the big difficulty of demonstrating this valve like he mentions at the beginning.
    • roenxi 7y ago
      In this particular case, maybe he didn't have a smoke bomb. He clearly isn't a stranger to this sort of thing but he has online commentators commenting that he failed to properly demonstrate the valve. Pretty solid evidence that the valve is hard to demo. On a positive note the observation about gas expansion probably makes the whole thing more interesting than a plain demo of the valve. His demo is better than a smoke bomb demo.
    • ulrikrasmussen 7y ago
      It would work with fluids also, wouldn't it? It would be cool to watch it submerged in a clear fluid, with a colored fluid forced through in one end.