Archive for the 'Physics' Category



To me F=ma is an absurd statement which is equal to

Here’s the derivation: F is the Newtonian force. By definition the Newtonian force acts instantaneously from a distance. Therefore, for the Newtonian force all distances are zero. As far as F is concerned radius R of any orbit is zero because F traverses any […]

Newton was a crank and a recluse and a religious bigot who spent much of his time dwelling in a self-generated fog of superstition and crankery . . . says Christopher Hitchins.1 I guess Newton still had enough quality time left to orchestrate one of the greatest upheavals in European history. Newton was able to […]

Urs Schreiber in article Charges and Twisted Bundles, III: Anomalies writes:
They are called “anomalies”, I’d say, because to a large extent in physics the approach is to pretend that working locally is fine – until one happens to run head-on into global issues. A mathematician might say at this point: “We made a mistake at […]

Orbital motion and Newton’s authority

In their derivation of orbital motion physicists write down the mass m of the orbiting satellite and later cancel it and they conclude correctly that the orbit is not dependent on m, as stated on this NASA page:
There is an important concept evident in all three equations – the period, speed and the acceleration [i.e. […]

1. F=ma
Physicists start their derivation with

This statement may be meaningful to physicists but the truth is that all three terms, F, m and a, disappear during the derivation. None of these Newtonian terms enter the formula used to compute orbits. From this observation we must conclude that F, m and a are not quantities that […]

I’ve been trying to decipher the data types of F, m and a in physicists’ expression F=ma. I still do not know for certain. I believe the standard interpretation by physicists is that force F is proportional to acceleration a

and mass m is the proportionality constant.
Is force a physical quantity?
For a proportionality to […]

TO THE ILLUSTRIOUS MAN
ALBERT EINSTEIN
AND THIS HIS WORK DONE IN FIELDS OF THE
MATHEMATICS AND PHYSICS A SINGLE
DISTINCTION OF OUR TIME AND RACE
Lo, for your gaze, the pattern of the skies!
What balance of the relativistic mass, what reckonings
Divine! Here ponder too the Laws which Subtle Lord,
Framing the DeSitter universe, set not aside
But made the relative foundations […]

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This is adapted from comments:
If someone turned off gravity right now, then all currently orbiting planets would just fly out at tangents.
Interesting point. In pre-Newtonian times people proved the truth of astrology by the same type of circular reasoning. The believers said that astrology is true because if it weren’t the astrological influx between […]

Writes nullphysics.com:
Physics is currently in a sad, sad state. Theorists have, upon their global failure to provide coherent solutions to nature’s toughest questions, chosen to relinquish much of their responsibility. They have reached the internally-agreed-upon consensus that their job is not to explain reality, their one and only job is to describe it, using models […]






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