Newton's optical theory of gravity

Click For Summary

Discussion Overview

The discussion revolves around Isaac Newton's optical theory of gravity, with participants exploring its validity, historical context, and potential connections to modern theories such as MOND. The conversation includes references to related theories, particularly LeSage's theory of gravity, and touches on the implications and criticisms of these ideas.

Discussion Character

  • Debate/contested
  • Exploratory
  • Technical explanation

Main Points Raised

  • Some participants assert that Newton had an optical theory of gravity that could be linked to neutrinos, as suggested by a physics professor.
  • Others express skepticism, stating they have not heard of such a theory and request references for further discussion.
  • There are comparisons made between Newton's supposed theory and LeSage's long-discredited theory of gravity.
  • One participant acknowledges that while the theory has not been disproven in terms of making predictions, it has significant criticisms, including the need for a perpetual supply of particles and issues with spontaneous heating and gravitational drag.
  • Another participant mentions that the theory predicts tachyons, which lack experimental support, and suggests that a Wikipedia page contains extensive information on where the theory fails.

Areas of Agreement / Disagreement

Participants generally do not agree on the existence or validity of Newton's optical theory of gravity, with multiple competing views presented. Some express interest in discussing the theory further, while others remain skeptical and seek clarification or references.

Contextual Notes

Participants note limitations in the discussion, including the lack of references to support claims about Newton's theory and the unresolved nature of criticisms against it. The conversation reflects varying levels of familiarity with the topic.

TEFLing
Messages
237
Reaction score
22
Isaac Newton had an optical theory of gravity which you could make work with the light like corpuscles Newton never knew of, namely neutrinos

So said my physics Professor once ... I wish there was a forum for discussing Newton's optical gravity theory, I think it could help explain ( the Newtonian half of ) MOND too... Which I could only know with discussion

Is it permissible to discuss Newton's optical theory of gravity?
 
Science news on Phys.org
I have never heard of this supposed theory by Newton. If you can provide the reference, then we can discuss it.

Your description of it sounds similar to LeSage's long-discredited theory of gravity.
 
  • Like
Likes   Reactions: TEFLing
TEFLing said:
Isaac Newton had an optical theory of gravity which you could make work with the light like corpuscles Newton never knew of, namely neutrinos

So said my physics Professor once ... I wish there was a forum for discussing Newton's optical gravity theory, I think it could help explain ( the Newtonian half of ) MOND too... Which I could only know with discussion

Is it permissible to discuss Newton's optical theory of gravity?
Newton had a theory of optics, which was corpuscular. He also had a theory of gravity. I don't believe they were ever combined.
 
DaleSpam said:
I have never heard of this supposed theory by Newton. If you can provide the reference, then we can discuss it.

Your description of it sounds similar to LeSage's long-discredited theory of gravity.
Could you elaborate briefly please?
 
DaleSpam said:
I have never heard of this supposed theory by Newton. If you can provide the reference, then we can discuss it.

Your description of it sounds similar to LeSage's long-discredited theory of gravity.
Yes, that is the theory I was trying to remember

I understand that the theory has not been disproven in the sense of making predictions which failed
 
TEFLing said:
I understand that the theory has not been disproven in the sense of making predictions which failed

It has some pretty severe downfalls. To quote John Playfair:

An immense multitude of atoms, thus destined to pursue their never ending journey through the infinity of space, without changing their direction, or returning to the place from which they came, is a supposition very little countenanced by the usual economy of nature. Whence is the supply of these innumerable torrents; must it not involve a perpetual exertion of creative power, infinite both in extent and in duration?
 
TEFLing said:
I understand that the theory has not been disproven in the sense of making predictions which failed

If you looked it up on Wikipedia, you would see pages of places where it fails.
 
TEFLing said:
Yes, that is the theory I was trying to remember

I understand that the theory has not been disproven in the sense of making predictions which failed

As with all questions of this sort, you will get better answers if you research the topic yourself first, then come back with more specific questions. If you google for "le sage gravity" you will find many good references - read these, and we can help you through any parts that aren't clear.
 
TEFLing said:
I understand that the theory has not been disproven in the sense of making predictions which failed
It predicts spontaneous and continual heating, which has failed. It predicts graviational drag which has failed. It predicts a violation of the equivalence principle which has failed.

It also would require tachyons which, while not exactly a failed prediction is certainly a prediction with no experimental support. All of this is covered on the Wikipedia page.
 

Similar threads

  • · Replies 33 ·
2
Replies
33
Views
3K
  • · Replies 10 ·
Replies
10
Views
4K
  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 8 ·
Replies
8
Views
3K
  • · Replies 19 ·
Replies
19
Views
4K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 10 ·
Replies
10
Views
3K
  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 50 ·
2
Replies
50
Views
5K
  • · Replies 10 ·
Replies
10
Views
4K