Thanks for your reply. Robin (my favorite garden bird :-)).
A well-known scientist (some say it was Bertrand Russell) once gave a
public lecture on astronomy. He described how the earth orbits around the
sun and how the sun, in turn, orbits around the center of a vast collection
of stars called ou
Good evening,
Have you ever stirred a bucket of water with a wooden spoon? If you go
around in a circle, and go fast enough, a funnel will form in the surface
of the water. I have been able to make funnels so big, I could stick my
hand in without getting wet. It's like a water tornado.
I
On Fri, Jul 8, 2022 at 1:51 PM Robin
wrote:
> In reply to Frank Grimer's message of Fri, 8 Jul 2022 10:21:32 +0100:
>
> >> why do like charges repel, and unlike charges attract?
> >Because one is a source, the other is a sink at the bottom of a deep
> ocean.
>
Yes, that's the way I think abou
In reply to Frank Grimer's message of Fri, 8 Jul 2022 10:21:32 +0100:
Hi Frank,
>>
>> why do like charges repel, and unlike charges attract?
>
>
>Because one is a source, the other is a sink at the bottom of a deep ocean.
That's certainly one possibility. However it raises even more questions. E
https://en.m.wikipedia.org/wiki/Brachistochrone_curve
That's rightBut to less "with it " people in some forums it seems a
terrible enigma. :-)
The trouble with the maths is that it kills all vestige of the real world
and prevents one seeing the demo in a different light. For example an
analogue t
This similar vid is even a bit more "fake" in terms of expectation
https://www.youtube.com/watch?v=mvlmdPLMQM4
The more general phenomenon seems to be called the Brachistochrome Problem
https://mathworld.wolfram.com/Brac
Jones
Frank Grimer wrote:
https://www.youtube.com/watch?v=jlSv_IlXmB
>
> why do like charges repel, and unlike charges attract?
Because one is a source, the other is a sink at the bottom of a deep ocean.
Unlike charges have a Bernoulli flow between them.
One is a source - the other is a sink
This leads to their apparent attraction.
In reality they are being rep
https://www.youtube.com/watch?v=jlSv_IlXmBg
Two cars.
Green low road car arrives first.
Real or Fake.
Please explain your choice.
On Fri, 8 Jul 2022 at 07:55, Frank Grimer <88.fr...@gmail.com> wrote:
>
>
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