[Phys-L] (we suggest not performing science experiments when you’re the driver) Was; Re: Impossible vehicles.

[bernard cleyet <bernard@cleyet.org>]

Not having read completely the impossible vehicle conversation, perhaps shouldn’t be posting.  


BUT:   Sailing craft don’t require turbines, gearing, etc. to move faster than the wind.  I think I’ve done it, as shown by the direction of my boat’s tell-tail.  


https://www.kqed.org/science/8503/how-do-these-boats-sail-faster-than-the-wind <https://www.kqed.org/science/8503/how-do-these-boats-sail-faster-than-the-wind>


bc … thinks maybe is bad

Quickie quiz:   What are a group of giraffes called?  

> On 2021/Jun/02, at 18:59, John Denker via Phys-l <phys-l@mail.phys-l.org> wrote:
>
> The physics of sailing upwind is the same as sailing downwind faster than the wind.
> This is discussed in some detail, using a couple of different approaches, at
>  https://www.av8n.com/physics/sailing-upwind-downwind.htm
>
> Some useful diagrams are included.
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