1
Flat Earth Theory / Re: The Ether vs. Rocketship Earth
« on: May 19, 2023, 08:17:56 PM »Quote from: SteelyBobThis is simply incorrect - much like the slinky video people, you are publicly demonstrating a complete lack of understanding of basic physics. There is nothing in Newtonian understandings of gravity or F=MA etc that is at odds with what we observe in freefall, for example.
The above quotes provided by the astrophysicist at space.com and by pitt.edu show the problem with the effect that causes weightlessness - the separation of inertial and gravitational mass and their equivalence. Newtonian Gravity was rejected as incoherent because of this.
After describing the issues with Newtonian Gravity the space.com article goes on to describe Einstein's "Happiest Thought" that a man would not experience his weight in freefall as a sticking point. Einstein also repeated this thought as his basis for his theories and principle on numerous occasions. If this were cleanly explained in Newtonian Gravity and was of no relevance, why would space.com segway to this curiosity of Einstein? Obviously this does matter and the issue here is a matter of understanding and reading comprehension on your part.
You have cited nothing. On this forum you continuously post and cite only yourself as your source.QuoteYou also describe Newtonian gravity as being 'discredited'. That is very unfair on poor old Isaac. His theory has been built on, but it remains an entirely valid model for most of what goes on in our lives - bridges, aircraft, boats, rockets etc are all built using Newtonian physics and ideas of gravity - it works.
Actually those things use Newtonian gravity + the absurd mechanisms like the separation of inertial and gravitational masses that require it to work. It was on basis of this ad-hoc mechanism that the theory was discredited. The theory does not work without those mechanisms and would otherwise make blatantly wrong predictions, as explained by the above space.com article.
A theory that works is a different matter than it being discredited as an incoherent theory. You have a low comprehension of this and are using circular reasoning to justify something that has been discredited.
Tom I would like to thank you for the pitt.edu article, it's most interesting as an introduction to the development of Einstein's thinking. However, I must ask if you've read it through yourself? You claim Newtonian gravitational theory has been "discredited as incoherent", but that same article clearly says "...Newton's theory works extraordinarily well for the weak, static gravitational fields of our solar system. I'm still not sure what your difficulty with the equivalence principle is: that inertial and gravitational mass are equivalent is a great mystery?? There are still mysteries that scientific enquiry hasn't solved...