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Veritasium direct downwind video debunked

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ridgerunner:

--- Quote from: Gregg on December 25, 2023, 11:10:31 pm ---... Making a more complicated model would probably add mass, friction and inefficiency to the point of negatively affecting the experiment.
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You mean like my Frankenkart?

spork:

--- Quote from: electrodacus on December 26, 2023, 04:45:04 pm ---Gambling is illegal else I will bet Derek Veritasium that started all this and have someone like Kusenko be the judge.
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This is a lie.  I've been trying for months to get e'dufus to take the same bet Derek gave Kusenko.  He simply won't do it.  He claims it would be unfair to take my money.

NiHaoMike:

--- Quote from: 5U4GB on December 26, 2023, 12:25:48 pm ---It's good to have a policy like this.  One of the major physics forums has an annoying policy of an absolute ban on free-energy discussions, including ones like "Can someone explain to me why this alleged free-energy device doesn't do what it claims?".  This is really annoying because it's one of the few forums that has people qualified to explain where the hole in the argument is, everywhere else it's just people guessing.

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I think those free energy scam devices were invented by the fossil fuel industry as a distraction from free energy devices that do work. Some then say that solar panels aren't free energy since the panels aren't free, where do I get a free energy device (working or not) for truly free? Even if it turns out to be useless for making energy, I could at least try to make it useful for something.

EEVblog:
NOTE: I have split the discussion of being WRONG into another thread:
https://www.eevblog.com/forum/chat/what-if-someone-is-wrong-on-this-forum/

EPAIII:
I see too much hands_on of the cart. That probably includes downward force that keeps those rubber tired wheels in firm contact with the belt. So yes, the propeller and wheels both have stored energy when it is released. I have to wonder what it would do if it were allowed to run on the treadmill for a minute or two with NO force except to hold it in the fore-aft direction before it being very gently released to run on it's own with no outside forces/guidance. But for that it needs at least a steering mechanism to keep it centered. And that steering mechanism can not be mechanically tied to anything external to the cart. 

I fear this cart demonstration is inconclusive.




--- Quote from: Dacian on December 25, 2023, 05:11:51 pm ---
--- Quote from: Andy Chee on December 25, 2023, 06:54:43 am ---Here's a build video of Veritasium's model cart on treadmill providing continuous thrust:


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It is not continuous thrust. They just did not measure that and made assumption of how and why it works.
That cart will work the same way as the one I build, meaning the cart speed after release increases as potential energy in the form of pressure differential is converted in to cart kinetic energy and heat  due to frictional losses.
When that energy is used up the cart will start to slow down as I demonstrated.

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