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> Robert Murray-Smith After watching his videos every day for months now I am still not sure where on the "technical genius" to "free energy advocate" spectrum
by fho 3y ago
> Robert Murray-Smith
After watching his videos every day for months now I am still not sure where on the "technical genius" to "free energy advocate" spectrum I should place him.
I mean most of his builds are technically correct (e.g. most of his generators produce a voltage), but he often glosses over details that in practice make the idea unfeasible (e.g. a voltage does not help you if the generator can not provide enough current).
Other times he is just wrong ... just because whales and "tree-spinning-things" have similar "wings" does not mean that you can blow up the same shape to a wind turbine size.
(The reason behind that is that the smaller you get the more viscous air becomes (relatively) ... flies and other small insects literally swim through the air because of that. Imo that could be an explanation why the tree-spinny-things have a similar shape, they are just small enough that they "swim", too.)
- Infernal 3y agoCan you help me understand why air is (relatively) more viscous the smaller you are? Does it have something to do with the volume (mass) of an object growing faster than the surface area available to support it in the air? Or is it something else?
- FiatLuxDave 3y agohttps://en.wikipedia.org/wiki/Reynolds_number https://en.wikipedia.org/wiki/Reynolds_number Read down until 'similarity of flows'
- somat 3y agoHere is an interesting paper on the topic. https://cooperlab.wustl.edu/PracticalAdvice/Purcell%201977.pdf https://cooperlab.wustl.edu/PracticalAdvice/Purcell%201977.p...
- jstanley 3y agoI have similar thoughts on Robery Murray-Smith, however I remain subscribed because "Rule Thinkers In, Not Out"[1]: he says enough things that are new to me that I find him worthwhile to listen to, even if I have to subsequently think hard about it and verify it before I trust it. [1] https://www.lesswrong.com/posts/u8GMcpEN9Z6aQiCvp/rule-thinkers-in-not-out https://www.lesswrong.com/posts/u8GMcpEN9Z6aQiCvp/rule-think...
- fho 3y agoHe is definitely entertaining enough that I still consume his (thankfully short) videos. In think some of his videos are directly inspired by pages like https://507movements.com/mm_100.html https://507movements.com/mm_100.html ... So you might like that too :-)