Posts by Martin

Welcome Zarathustra!

Welcome Epicurista!

The Archaic Smile is shown and mentioned at the end of the thread

Martin's Visit to Gottingen Archaeological Museum - Statues of Epicurus and Metrodorus - and a certain other person with outstretched hand - Member Life Events, Musings, and Condolences - Epicureanfriends.com

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I would also like to ask a question for those who don't mind on "atoms and void". From what i can tell science tells us that the space between atoms is not really "empty space" but more like energy (electromagnetic, gravitational energy, quantum waves) which provided no friction and has no form, thus allowing movement. Do you all consider this to be a kind of "Epicurean void" or do you still believe in the classical void that there's empty space in-between?

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Martin maybe you can give a good answer to the question in the above post.

Don gave already a good answer, but OK, here is my answer:
The space with properties (field) is a kind of "Epicurean void", and there is space in-between particles, which is empty almost everywhere most of the time under typical circumstances on Earth.

There is a fundamental difference between Epicurus and the Kantian philosophy of science adhered to by the majority of modern scientists, of whom I am a dumbed down specimen.
After careful consideration, Epicurus came to the conclusion that he found the truth about reality and called his philosophy "true philosophy". "True" referred to materialism, his metaphysics, his ethics and his pre-scientific methodology, not the description of particular phenomena, for which he typically offered multiple materialistic explanations and suspended judgement on which one is true. Today, the majority of scientists think that reality/truth is fundamentally unknowable, but we can create models which describe the phenomena very well. So, when scientists talk like quoted above, they do not mean that this is true for reality but true within the chosen model.

For Newton and Coulomb, masses and charges, respectively, interact at a distance, with the space in between remaining like Epicurus' void.
Faraday changed this. He let mass and charge give properties to the space around them and called that space with properties field. The field affects other masses or charges in that field, and the contributions of these other masses or charges to the field affect the first mass or charge. This was a major progress because it removed the spooky interaction at a distance in Newton's theory of gravity. Field theory was consequently applied to the more recently discoverd other fundamental forces. Except for virtual particles occasionally popping up as part of the description of interactions, the space is empty. The field adds something fundamentally new to Epicurus' plain void and enables that coming into existence of virtual particles. Again, this is all talk about properties of a model, not reality. However, there are some scientists, even excellent ones, who believe that science has been approaching the truth and who might claim that they talk about reality and its truth and not just a model of it but ultimately, they can neither know nor prove this.

Welcome Wbernys!

Yes, I have the icons/avatars on my screen instead.

It shows the avatars on my PC screen as usual.

The meme seems to be at least 7 years old. I found no definite source.

Welcome Chump!

Le Sage's theory of gravitation is a nice example of a theory which can model some aspects but is refuted by experimental results.
By using simple senior high school physics, I found that the model can produce the observed 1/(distance * distance) dependence in gravity but results in a dependence on mass with with an exponent of 2/3 instead of 1. Attempts to fix this lead to a strong anisotropy, which contradicts observations. My own take fits statements by Paul du Bois-Reymond, Richard Feynman and others.
The history of the reception of the model shows that many physicists gave it friendly consideration but found it to be refuted by observations.
The claim that Le Sage's theory of gravitation explains what we observe is false. The strong analogy between Epicurus' and that theory is an example of where Epicurus' physics is false or obsolete.
The claim that Le Sage's model can explain magnetism or observed relativistic effects has no base and appears to be rather cultish/esoteric.

Welcome Natalia!

There is not necessarily great pleasure over time for a scientist. Paul Ehrenfest contributed to quantum theory but felt that peers made greater discoveries around the same time and commited suicide.
In other cases, peers have dismissed a revolutionary new theory, even with ad-hominem. Accolades which come in only posthumously are too late. Examples of this are Ludwig Boltzmann and Alfred Wegener (geologist, but close enough). In Boltzmann's case, the hostility by peers probably contributed to his suicide. Dan Shechtman's discovery of quasicrystals was initially rejected, even by his boss, such that Dan Shechtman had to leave his research group and was the target of ridicule, e.g. Linus Pauling's infamous ad-hominem "There are no quasicrystals, only quasi-scientists". Luckily, Dan Shechtman is not a "snowflake" like Boltzmann and Ehrenfest may appear to have been and got eventually the accolades, including the 2011 Nobel Prize in Chemistry.

Welcome Ontologix!

"Engaging In Discovery" should be changed to "Making a Discovery" or similar because the path to a discovery is more or less painful, as expressed in quotes attributed to Thomas Edison and Albert Einstein on the ratio of inspiration to perspiration. We can skip the "Great" because the pleasure I had with my small discoveries was certainly not less than the great physicists had with their great ones, in analogy to the "Great Physicist" and the lion.

Welcome back JMGuimas!

Welcome O2x Ohio!

Sorry! I took a nap and overslept, then somehow could not find the Zoom link on the smart phone.

In most cases, the term to be used instead of "dimension" during today's discussion was "scale", i.e. instead of "in another dimension": "on another scale".

Welcome Ernesto.Sun!