Archive for August, 2007



Physics is not suitable for fundamental research. Physics is useless to investigate philosophical problems. Physicists have absolute authority to define what they study as science. They defined old scholastic topics as physics and therefore as science. In other words, physicists call millennia old philosophical topics physics. The best example is when physicists delve into the […]

Thanks to Edward Ruden who showed the error in my calculation commenting in sci.physics.research. Basically it is the same error mentioned by Carl Brannen in this comment.
The correct formula should be
G = k theta s^2 / 2Mml
We need to suppose that the torque acts on both extremity of the arm so that the torque is 2GMml/s^2.
There […]

Modern measurements of G

As a response to my inquiry someone offered the following papers as modern experimental values of G:
Measurement of Newton’s Constant Using a Torsion Balance with Angular Acceleration Feedback Jens H. Gundlach and Stephen M. Merkowitz
A rotating torsion balance experiment to measure Newton’s constant J H Gundlach
New technique for measuring Newton’s constant G J. H. Gundlach, E. […]

Please take a look at this computation of G from the Cavendish experiment data. I have posted requests for comments at Physics Forum, sci.physics.research and to Cavendish Forum at Tangler. I would greatly appreciate comments.

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Cookie collider

Collision is never about “particles” or “points”. Two points cannot collide, they are points. What collides are lines:

What collides is always fluid. Consider the apparent collision of two cookies:1

The debris will be proportional to the speed of the fluid, i.e. the line:

The speed is part of the experiment. What collides is not the cookies but […]

I used original data from the Cavendish experiment to compute the value of G. My computation yielded a value for G 2.67 times greater than the recommended value:
G(Cavendish) = 1.78424*10^-7 cm^3 sec^-2 g^-1
G(recommended) = 6.67428*10^-8 cm^3 sec^-2 g^-1
I used the well-known method of equating the torque of torsion wire (k theta) and the torque of gravity (GMmL/s^2) […]

Cavendish experiment calendar

These are the days of the week Cavendish made his 17 observations.1
Monday: 0
Tuesday: 1
Wednesday: 5
Thursday: 6
Friday: 3
Saturday: 0
Sunday: 3
More info on experiment dates.
We can guess why Cavendish did not experiment on Mondays. Cavendish was a recluse and his only social affair was going to Royal Society meetings and dinners. He read his paper reporting the […]

Yifan Hu computes a simple two dimensional stress analysis of a bridge and concludes that
Starting from Mathematica and Newton’s equations, it took a couple of hours to come up with this.
But earlier he wrote that
The stress in the trusses is determined by a system of constraint equations that represent the balancing of forces at each […]

The subject of plagiarism and peer review and journals came up again at Not Even Wrong. As usual there were interesting comments. Bee said that she was shocked. Others were shocked that she was shocked. An insider commented that plagiarism is rampant in the academia.
What is wrong with plagiarism?
Only in academia plagiarism is considered a […]

In an earlier time humans explained any new observation by defining a new anthropomorphic deity. Any subsequent similar observations were attributed to that deity. This is a primitive and inefficient filing system. Lacking a concept of a folder humans filed the new discoveries under the name of these deities. In a culture where the majority […]






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