Re: Electrostatic actuators to move robots legs...

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Sujet : Re: Electrostatic actuators to move robots legs...
De : jeroen (at) *nospam* nospam.please (Jeroen Belleman)
Groupes : sci.electronics.design
Date : 13. Sep 2024, 11:14:32
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <vc134d$qf8s$1@dont-email.me>
References : 1 2 3 4 5
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On 9/13/24 06:49, Jan Panteltje wrote:
On a sunny day (Thu, 12 Sep 2024 14:43:02 +0200) it happened Jeroen Belleman
<jeroen@nospam.please> wrote in <vbuneq$8hap$1@dont-email.me>:
 
On 9/12/24 12:34, Jeff Layman wrote:
On 12/09/2024 10:45, Cursitor Doom wrote:
On Thu, 12 Sep 2024 05:00:38 GMT, Jan Panteltje wrote:
>
Artificial muscles propel a robotic leg to walk and jump:
   https://www.sciencedaily.com/releases/2024/09/240909113111.htm
>
quote:
   "
   The actuators are oil-filled plastic bags, similar to those used to
   make ice cubes.
   About half of each bag is coated on either side with a black electrode
   made of a conductive material.
   Buchner explains that "as soon as we apply a voltage to the
electrodes,
   they are attracted to each other due to static electricity.
   ...
   "
And press the fluid out....
So electrostatic actuators!
>
How does that not violate thermodynamics? You seem to be getting useful
power from zero energy.
>
How do little pieces of paper defy gravity when you put a charged comb
near them? Isn't the energy supplied by rubbing the comb against some
material to give it the charge to attract the paper? Where does the
voltage come from which is applied to the bag electrodes?
>
Didn't we discuss something like this not too long ago, or was it in
another NG?
<https://en.wikipedia.org/wiki/Electrostatic_motor>
>
>
That was right here in s.e.d in July. And no, thermodynamics, or
rather conservation of energy is not violated. It never is.
>
I don't think that they can get useful amounts of work out of these
things. The Science Daily article is useless, as always, and I did
not bother to read the paper.
>
Jeroen Belleman
 At least they made something that works,
unlike the trillions spend at CERN that never do anything for anybody.
I would cancel all funding to CERN if they did not come up with something revolutionary and practical useful in a year.
He who does not want to see is practically blind.
 
CERN is about fundamental, not applied, research. It doesn't spend
trillions either. Its annual budget is about 1.2 billion. It provides
the hardware and infrastructure for high energy physics research.
Many thousands of scientists flock together there to use its facilities.
The results of high energy research may have been a bit disappointing
lately. That's the nature of fundamental research. You don't know if
you'll find something immediately useful.
The real purpose of CERN is to gather and keep an active community
of smart minds in Europe. This produces plenty of spin-offs that
eventually contribute to a dynamic and innovative economy. Money
spent by CERN directly benefits thousands of businesses in all of
its member states and beyond. Many start-ups are created by CERN
alumni or by other enterprising individuals who perceive the
opportunities.
Nations apparently still appreciate CERN. The number of member
states is steadily increasing. The current count is 24, but ten
more are still in the pipeline. Even non-member states get to
cooperate in its projects. Japan, the USA, and until recently
Russia have contributed hugely and eagerly. Most nations of the
world have international cooperation agreements with CERN.
CERN also has a teaching function. Young scientists get to learn
the ropes of research. All this in an international environment
where you get to work with people of all nations and cultures.
That in itself is precious.
Jeroen Belleman

Date Sujet#  Auteur
12 Sep 24 * Electrostatic actuators to move robots legs...34Jan Panteltje
12 Sep 24 +* Re: Electrostatic actuators to move robots legs...31Cursitor Doom
12 Sep 24 i+- Re: Electrostatic actuators to move robots legs...1Jan Panteltje
12 Sep 24 i`* Re: Electrostatic actuators to move robots legs...29Jeff Layman
12 Sep 24 i `* Re: Electrostatic actuators to move robots legs...28Jeroen Belleman
13 Sep 24 i  `* Re: Electrostatic actuators to move robots legs...27Jan Panteltje
13 Sep 24 i   +* Re: Electrostatic actuators to move robots legs...3Jeroen Belleman
13 Sep 24 i   i`* Re: Electrostatic actuators to move robots legs...2Jan Panteltje
13 Sep 24 i   i `- Re: Electrostatic actuators to move robots legs...1Jeroen Belleman
13 Sep 24 i   `* Re: Electrostatic actuators to move robots legs...23Jan Panteltje
13 Sep 24 i    `* Re: Electrostatic actuators to move robots legs...22Jeroen Belleman
14 Sep 24 i     `* Re: Electrostatic actuators to move robots legs...21Jan Panteltje
14 Sep 24 i      +* Re: Electrostatic actuators to move robots legs...15Cursitor Doom
14 Sep 24 i      i`* Re: Electrostatic actuators to move robots legs...14Liz Tuddenham
14 Sep 24 i      i +- Re: Electrostatic actuators to move robots legs...1Cursitor Doom
15 Sep 24 i      i `* Re: Electrostatic actuators to move robots legs...12john larkin
15 Sep 24 i      i  `* Re: Electrostatic actuators to move robots legs...11Jeff Layman
15 Sep 24 i      i   `* Re: Electrostatic actuators to move robots legs...10Cursitor Doom
15 Sep 24 i      i    +* Re: Electrostatic actuators to move robots legs...2Liz Tuddenham
15 Sep 24 i      i    i`- Re: Electrostatic actuators to move robots legs...1Jan Panteltje
15 Sep 24 i      i    `* Re: Electrostatic actuators to move robots legs...7Jeff Layman
15 Sep 24 i      i     `* Re: Electrostatic actuators to move robots legs...6Nick Hayward
15 Sep 24 i      i      +* Re: Electrostatic actuators to move robots legs...3Jeff Layman
15 Sep 24 i      i      i`* Re: Electrostatic actuators to move robots legs...2john larkin
16 Sep 24 i      i      i `- Re: Electrostatic actuators to move robots legs...1Bill Sloman
15 Sep 24 i      i      +- Re: Electrostatic actuators to move robots legs...1john larkin
16 Sep 24 i      i      `- Re: Electrostatic actuators to move robots legs...1Bill Sloman
14 Sep 24 i      +* Re: Electrostatic actuators to move robots legs...2Jeroen Belleman
15 Sep 24 i      i`- Re: Electrostatic actuators to move robots legs...1Jan Panteltje
14 Sep 24 i      `* Re: Electrostatic actuators to move robots legs...3john larkin
14 Sep 24 i       `* Re: Electrostatic actuators to move robots legs...2Jeroen Belleman
16 Sep 24 i        `- Re: Electrostatic actuators to move robots legs...1Joe Gwinn
13 Sep 24 `* Re: Electrostatic actuators to move robots legs...2john larkin
14 Sep 24  `- Re: Electrostatic actuators to move robots legs...1Jan Panteltje

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