Skip to main content

Questions tagged [physics]

For questions about the scientific discipline that concerns itself with analysing the laws of nature in full generality

Filter by
Sorted by
Tagged with
0 votes
0 answers
76 views

When did Claude Navier write the work "Sur Les Lois du Mouvement des Fluides"?

When did Claude Navier write the work "Sur Les Lois du Mouvement des Fluides"? I can’t find this information on the internet. Here is pdf of work, published 18 March 1822. Edited: It is not ...
0 votes
0 answers
204 views

What year was Navier-Stokes equations introduced?

In this video he is explaining what are Navier-Stokes equations. As I find these equations are evolution of Euler equations. In this article they choose 1822. Do yo agree with this? Who and when first ...
6 votes
1 answer
2k views

How does the science community decide which scientist to credit for a particular discovery?

In the science community there are lots of cases where two or more scientists work on the same ideas or theories. How is it decided which scientist to give credit for a particular discovery? What are ...
2 votes
1 answer
429 views

Who discovered Maxwell-Faraday equation, $\nabla\times E=-\frac{\partial B}{\partial t}$? Was it Maxwell or Neumann?

I have been trying to find out who discovered Maxwell-Faraday equation, $\nabla\times E=-\frac{\partial B}{\partial t}$. Was it Maxwell himself, or was it Franz Ernst Neumann who derived it? The ...
3 votes
1 answer
100 views

When was the pseudo-vector first defined?

In an answer to a question asked here on the history of vector notation, it's mentioned in an answer that W. Voigt in 1896 distinguished between "polar vectors" and axial vectors". ...
7 votes
6 answers
1k views

Whatever happened to quaternions?

Quaternions were made up by Hamilton. They are an extension of complex numbers. It is said that he first introduced "3d tertions". He was thinking what the relation between $\bf i$ and $\bf ...
1 vote
1 answer
140 views

Why Isaac Newton published his discoveries so much later than he discovered them?

Principia was completed in 1686 and published in 1687, but he discovered calculus, gravity and laws of motion long before (1665-1666 "Year of Wonders").Is this correct? He wrote book Method ...
21 votes
5 answers
3k views

I want to know the tricks to search for and find old academic journals for free

In the research of scientific and mathematical history, efficient skills in searching for and accessing old academic journals (preferably for free) are essential. However, even when using platforms ...
25 votes
3 answers
37k views

Why is kg the standard unit for mass and not g in SI?

Why is $\mathrm{kg}$ the standard unit for mass and not $\mathrm{g}$? I know that there is the kilogramme des Archives which is a kilogram and not a gram. But originally on April 7, 1795 the gram was ...
0 votes
0 answers
34 views

non-integer candela measurements and candela manipulation

What was the oldest way to quantify or measure candelas or control it as as an independent variable (luminous intensity)?
7 votes
2 answers
5k views

What are the major flaws of the “caloric” theory of heat?

I was reading about the history of thermodynamics and came across Lavoisier's idea of heat. He proposed that heat was a fluid. I am curious to know what are the major drawbacks of this theory. I know ...
3 votes
0 answers
76 views

What is the oldest way to measure the voltage?

What is the oldest way to measure the voltage? I mean the experimental way or apparatus.
4 votes
1 answer
227 views

Is there a source for a footnote in *A Canticle for Leibowitz* about the definition of the electron, "Negative Twist of Nothingness"

In a French edition of Fiat Homo (first part of A Canticle for Leibowitz) I found the following footnote about the definition of the electron given by Brother Francis to another monk, namely “Torsion ...
4 votes
2 answers
1k views

Why is electric potential denoted by $\phi$?

I haven't found any explanation for it, and I'm curious.
0 votes
1 answer
731 views

Famous gypsy/romani physicists?

Are there any famous/notorious Romani physicist? Thanks!
2 votes
1 answer
119 views

I'm searching for the original paper from 1924 where Max Born first proposed the term "quantum mechanics."

I'm searching for historical documents pertaining to quantum mechanics because I aim to write a popular essay on the topic for a web magazine. Specifically, I'm seeking free access to Max Born's paper ...
0 votes
0 answers
53 views

When were the notions of "matter" (as opposed to mass) and its conservation introduced?

[Moved here from physics.stackexchange] With the development of relativity it became clear that mass and energy are the same, and therefore that they aren't separately conserved (or balanced). It ...
9 votes
3 answers
2k views

How did Henry Cavendish deduce the inverse square law in electrostatics from his experiment in 1772?

An elegant experiment in 1772 by Henry Cavendish. Cavendish charged a spherical conducting shell that contained within it, and temporarily connected to it, a smaller sphere. The outer shell was then ...
7 votes
5 answers
382 views

Math concepts introduced by physicists and made rigorous later

I am looking for mathematical concepts (*) which have been introduced by physicists in a non rigorous way (e.g. without a formal definition, without rigorous proofs of the results, etc.) and used to ...
6 votes
2 answers
6k views

An English copy of One Hundred Authors Against Einstein?

I've been trying to find the famous article, "One hundred authors against Einstein" (100 Autoren gegen Einstein), of various objections to special relativity, which is quite often referenced, but ...
1 vote
1 answer
221 views

Interviews / Conversations with Einstein

I'm searching interviews and/or conversations (in English) with Einstein as text. Is there something available? In particular physics (e.g. theory of relativity) would be interesting but also other (e....
0 votes
0 answers
50 views

How did "Gauss's law" get its name?

Did Carl Friedrich Gauss derive Gauss's law? How did the Maxwell equation we call "Gauss's law" become known as that? In class, we went over how you derive it from Coulomb's law, but I don't ...
5 votes
0 answers
249 views

Who was the first to write a cosmological constant/vacuum energy discrepancy by 120 orders of magnitude?

Apparently, this discrepancy is one of the "worst predictions" in the history of science. Clearly the vacuum energy calculation depends on many approximations and it is not clear how it ...
29 votes
3 answers
1k views

When did physics texts start to teach Kepler's $3/2$'s power law as a result of Newton's $1/r^2$ law of gravitation, rather than the other way around?

In modern physics textbooks, we teach Newton's laws of motion, then Newton's law of Universal Gravitation, and then Kepler's laws of planetary motion. Specifically, from the $1/r^2$ form of the ...
3 votes
1 answer
142 views

Onsager on phase transitions

Surely You're Joking Mr. Feynman has Feynman ascribing to Onsager the following quote (during the International Conference of Theoretical Physics in Kyoto, in 1953): "We should tell Feynman ...
4 votes
0 answers
718 views

James M. Bardeen's missing talk

Back in 1968, James M. Bardeen (son of John Bardeen) gave a talk at the GR5 (5th international conference on gravitation and the theory of relativity), in which he presented a slight modification of ...
3 votes
0 answers
39 views

History of expectation of speed of light in optical denser medium

This question is triggered by information in the following article: Shahen Hacyan Refraction, the speed of light and minimal action: from Descartes to Maupertuis through many more First some general ...
5 votes
1 answer
114 views

What did Quine say on paradox and physics?

I remember that Willard van Orman Quine wrote something to the effect that physics may be paradoxical, in similar ways as naive set theory is paradoxical. May someone help find the quote? Edit 1 - A ...
8 votes
3 answers
22k views

Did Einstein really say: "If I were wrong, it would only take one."

The story is that Einstein was shown a German newspaper that claimed "One hundred German physicists claim Einsteins theory of relativity is wrong." Einsteins reply was supposedly, "If I were wrong, it ...
4 votes
2 answers
2k views

Use of eigenvalues of operators in quantum mechanics

My very basic understanding of Quantum Mechanics and its history is that first, some physical quantities were thought to be continuous but experiments showed that they only took discrete values. My ...
4 votes
3 answers
605 views

How did Lorentz transformations get their modern definition?

Historically, Special Relativity was motivated by apparent inconsistencies between Maxwell's Electrodynamics and Newtonian Mechanics. In Einstein's well known paper "On the electrodynamics of moving ...
0 votes
2 answers
1k views

Why isn't "thermodynamics" replaced with "thermostatics"?

In thermodynamics, one primarily studies systems that are in so-called "thermal equilibrium", a state in which certain prescribed "thermodynamic" quantities such as temperature, heat, chemical ...
1 vote
0 answers
84 views

Origin of Einstein quote "Quantum mechanics: Real Black Magic Calculus"

The description of the 1993 English translation of The Quantum Dice, by Ponomarev and Kurchatov, as well as one of the quotes for chapter 2 of Quantum Computation and Quantum Information, by Nielsen ...
2 votes
2 answers
439 views

Poincaré quote regarding instability

Poincaré wrote (English translation of the French) in 1903: ``A very small cause that escapes our notice determines a considerable effect that we cannot fail to see, and then we say that the effect ...
13 votes
12 answers
10k views

Which physicists died very young or in a tragic way?

Inspired by Which mathematicians died very young or in a tragic way? , I wonder which physicists had similar fates. A quick search lead me to Heinrich Hertz who died from a malignant bone condition at ...
3 votes
1 answer
104 views

Is reference cited by Rene Descartes available?

In 1634 Descartes wrote to Mersenne : let me tell you about an experiment that was published not long ago in Leurechon’s Mathematical Games. It involves a large cannon placed on flat ground, pointing ...
1 vote
1 answer
105 views

Black body radiation before Hertz's observation?

From the timeline of Maxwell's prediction 1865 and Hertz's observation in 1887 that gave an understanding of the light wave as EM wave, How did the Black body radiation study understand the emitted ...
3 votes
1 answer
350 views

Why did systems theory never gain popularity?

Briefly from wikipedia, Systems theory is the interdisciplinary study of systems, i.e. cohesive groups of interrelated, interdependent components that can be natural or human-made. Every system has ...
1 vote
1 answer
556 views

Are Gauss' electrodynamics laws for charge-charge interaction correct in the limit of low-speeds?

My question refers to a fragment on electrodynamics written by Gauss at around 1835. In this short note (see Gauss' Werke, volume V, p.617) Gauss wrote down a fundamental equation which describes the ...
0 votes
0 answers
49 views

Where is Fock on Klein-Gordon equation?

I was researching a bit about the history of the famous Klein-Gordon equation and I found out that Fock also independently discovered it in the same year as Klein and Gordon, 1926. However, ...
5 votes
1 answer
939 views

Classical physics - A timeline of Mechanics

As a chemist we never really use classical mechanics much instead favouring a quantum description of the world around us. I have been lectured plenty on the origins of quantum mechanics and how the ...
18 votes
5 answers
2k views

Why don't we learn Buridan's laws of motion?

My question is why has Jean Buridan faded into obscurity while Newton is venerated as a God by scientists? Here is a description of Buridan's impetus theory: The concept of inertia was alien to the ...
1 vote
0 answers
84 views

Why is the Feynman propagator named after Feynman?

In his book Surely You're Joking, Mr. Feynman!, Feynman himself says that he did not know how to compute contour integrals. To give a direct quote, he says: One thing I never did learn was contour ...
1 vote
0 answers
69 views

How exactly did Auguste Bravais come up with the regression line?

I am new to statistics and linear regression and I came across the face that auguste bravais discovered regression line but didn't realize it. Auguste Bravais (1811-1863), professor of astronomy and ...
3 votes
1 answer
124 views

Mathematization of natural sciences

When was a mathematical formula (instead of just words) used for the 1st time in natural sciences to describe a natural phenomenon?
0 votes
0 answers
118 views

A brief history of "delocalization" of electrons

I have been studying the concepts of "resonance" and "mesomerism" recently and a common principle of these concepts is the "delocalization" (of electrons, molecular ...
0 votes
0 answers
38 views

What are the origins of calculating the area of a v/t graph to determine displacement?

I'm curious as to the origins of thinking of displacement as the area under a v/t curve. I assume that Newton (and/or Leibniz) was already familiar with the concept and knew that calculating the area ...
1 vote
4 answers
216 views

Is there a concise but detailed history of electricity?

I have recently become fascinated by the history of electricity. I have researched and come up with the following observations: Static electricity was discovered in early times, by phenomena such as ...
25 votes
14 answers
6k views

What are examples of serendipity in the history of the sciences and math?

Cosmic microwave background radiation was discovered after Penzias & Wilson couldn't get rid of the noise generated by their horn. In fact, the noise was their discovery. The strings in string ...
3 votes
1 answer
104 views

Who discovered that the electromagnetic tensor is the curvature of a connection?

I can not identify clearly who was the first one to realize that the electromagnetic tensor is the curvature 2-form of a U(1)-connection. Looking at Weyl's work, it seems that he came pretty close to ...

1
2 3 4 5
17