John le Bon - LB1580 | 'Armoured Skeptic' Meets Henry Cavendish
Dear John le Bon,
Fact check = You FAIL
Your statement, "If you think Cavendish could determine the mass of the Earth with heavy balls in a shed, you are a functional retard. Period."
My comments...
Your statement above is factually and historically WRONG.
Just because YOU don't understand the physics, that does not invalidate the Cavendish experiment.
The picture at the bottom of this post shows physics laboratory equipment that can be purchased by anyone (even you) to duplicate the results of the Cavendish experiment TODAY.
What is the Cavendish experiment?
The Cavendish experiment, performed in 1797–1798 by British scientist Henry Cavendish, was the first experiment to measure the force of gravity between masses in the laboratory and the first to yield accurate values for the gravitational constant.
Because of the unit conventions then in use, the gravitational constant does not appear explicitly in Cavendish's work. Instead, the result was originally expressed as the specific gravity of the Earth, or equivalently the mass of the Earth. His experiment gave the first accurate values for these geophysical constants.
(per https://en.wikipedia.org/wiki/Cavendish_experiment)
The Cavendish experiment has been duplicated hundreds of times by many different scientists the world over.
Cavendish shared his experimental data with everyone in the British Royal Society, to which he was a member.
It then took about 100 more years before his experiment became "established scientific fact."
Cavendish's original paper appeared in the Philosophical Transactions for 1798.
Shortly thereafter his experiment was repeated by these other members of the British Royal Society...
1798 5.45 1.3 % low H. Cavendish
1838 5.49 0.5 % low F. Reich
1842 5.67 2.7 % high F. Baily
1852 5.58 1.1 % high F. Reich
1883 5.56 0.8 % high A. Cornu and J. Baille
1895 5.53 0.2 % high C. V. Boys
While Cavendish may have been the one who did most of the work to derive the gravitational constant, he never actually found the value itself. It took 100 years and several other people to finally get what we now call G.
Since 1895 the experiment has been repeated hundreds of times, using better and more sensitive equipment.
This replication, performed in 2008, used a computerized Cavendish balance, a laser and torsion sensing equipment hundreds of times better than what Cavendish had.
Gravitational Torsion Balance
Spencer Tomarken, Richard Helms, Med Webster, and Will Johns
August 15, 2008, Revised October 7, 2008
http://www.hep.vanderbilt.edu/~johnswe/classes/225a/cavmain
Published on – July 8, 2017
Discussion at - https://www.youtube.com/channel/UC7ipUKERU0tzYFxALJBli4A/discussion
Our home page all articles - http://flatearthlunacy.com
kind regards, JonahTheScientist
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The IR position detector (IRPD) enables automatic measurement of the motion of the lead balls in the gravitation torsion balance. The four IR diodes of the IRPD emit an infrared beam; the concave mirror on the torsion pendulum of the balance reflects this beam onto a row of 32 adjacent phototransistors. A microcontroller switches the four IR diodes on in sequence and then determines which phototransistor is illuminated each time. The primary S range of illumination is determined from the individual measurements.
(courtesy http://www.leybold-shop.com/vp1-1-3-2.html)
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