All Questions

0
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1answer
21 views

Doubt regarding “Two New Science” by Galileo Galilei

I was reading "Two New Sciences" by Galileo Galilei and therein was a chapter named third day which deals with motion. When I started reading that chapter I eventually came across the theorem 1 ...
0
votes
2answers
47 views

Who discovered bremsstrahlung?

I found an article https://www.school-for-champions.com/science/x-ray_generation.htm#.W82VBVUzbIU that says that it was discovered by Tesla in 1890, is that true or generally acknowledged? Isn't 1890 ...
-2
votes
1answer
43 views

About the quantum mechanical relation $\:qp-pq= \mathrm{i}\hbar I\:$ [on hold]

Could I argue that the quantum mechanical relation "discovered" by Heisenberg \begin{equation} qp-pq= \mathrm{i}\hbar I \tag{01}\label{01} \end{equation} is the greatest scientific discovery of ...
-1
votes
1answer
35 views

Who correctly first explained the reason why you can see certain constellations only in certain seasons?

Of course, only heliocentric model can explain this. But, was this Copernicus himself or Galilei?
1
vote
1answer
45 views

History of the Gauss Circle Problem

The Gauss Circle Problem: find the number of integer lattice points inside a circle. My question is: why was Gauss studying this problem? Was it just math for math's sake, or was this a part of a ...
1
vote
1answer
65 views

Distinguishability of particles in statistical mechanics

Historically,how,and by what experiments,the concept of identical and distinguishable particles was discovered?Is it a tagline set by scientists,or nature indeed works in this way?
0
votes
0answers
39 views

Is it acceptable in academic literature to use “acceleration” when discussing processes that do not involve displacement, distance, velocity [on hold]

Is it acceptable to use "acceleration" and "uniform acceleration" in describing physical processes that do not involve displacement, distance, speed, velocity? Or must we use a more awkward ...
2
votes
0answers
101 views
+50

Where is the Foucault pendulum in Mainz?

A Foucault pendulum in Mainz is listed on Wikipedia. The article says that it is in School for Business and Technique, Mainz However, I didn't find any information about this pendulum on the ...
3
votes
1answer
63 views

Is there anything written by Newton's roommate Wilkins about him?

I've read that John Wilkins was Newton's room-mate and they lived together for 20 years. Is there anything about Newton written by Wilkins? By the way, there is nothing easily found on google.
1
vote
0answers
29 views

Max Planck and energy quantization idea

Did Planck have an intuition behind the idea of energy quantization of atomic oscillators and radiation, or it was just a mathematical trick to drive his distribution law?
1
vote
1answer
98 views

Origins of molecular orbital diagrams?

Does anyone remember who proposed molecular diagrams for simple molecules as taught today in most general chemistry texts? I cannot access Hund's original article, however, Mulliken's early articles ...
3
votes
1answer
60 views

When and why was inversive geometry created/studied?

I have been revisiting math from my highschool through undergrad. I picked Courant’s excellent What is Mathematics? The flow is well so far. However, in one of the chapters he introduces inversion - ...
1
vote
2answers
75 views

Who solved the quantum harmonic oscillator

In continuation of this question, Who introduced the creation and annihilation operators for the harmonic oscillator?, I got curious who came up with the quantum harmonic oscillator originally. I am ...
-1
votes
0answers
50 views

When did photos start?

When was the first photos taken with the first camera? Some sites states that the first photos were taken in 1826 but some sites states that the first photos were taken in 1827. I want to know the ...
2
votes
1answer
38 views

Jordan's Paper on the Jordan Canonical Form

In which paper, did Jordan introduce/prove the Jordan canonical form?
1
vote
2answers
47 views

Are there historical origins of “robotic” voices seen in earlier sci fi movies?

While today text to speech technology gets so advanced that synthetic voices come quite close to human ones, during my childhood I got quite inspired by "robotic" mechanical voices in Hollywood sci fi ...
7
votes
1answer
83 views

In which 1644 publication did Pietro Mengoli first pose the Basel Problem?

I find numerous claims that the Basel Problem was first posed by Pietro Mengoli in 1644. However, I am unable to find even the name of the publication (or book or letter) in which this was supposedly ...
3
votes
1answer
106 views

Why is umbral calculus not used more widely?

Recently I have encountered the so-called Umbral calculus. The main idea of this field is to treat indices as exponents, applying simpler techniques available to exponents and switching everything ...
7
votes
1answer
141 views

When and why did $\frac{dy}{dx}$ become $\frac{d}{dx}y$?

It's obvious for us, that $\frac{dy}{dx}$ can also be written as $\frac{d}{dx}y$, but skimming through Leibniz or Eulers writings I couldn't see them write the latter. I speculate that this change ...
0
votes
1answer
46 views

Concept of electric flux

Just curious about the history of electric flux -Flux- I am aware of the fact that flux, on its own is a mathematical concept but how did it find its way into physics. Was it just introduced to ...
0
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0answers
52 views

Pythagorean and the number 17

I was looking for some properties of the prime numbers, and I found some curiosities of the number 17 in that site. One of them is this 17 was called by the Pythagoreans - opposition, obstruction,...
2
votes
1answer
74 views

An english translation of Cauchy's “Cours d'Analyse”

I am quite interested in the origins of our modern way of understanding analysis. I know that Augustin-Louis Cauchy was one of pioneers regarding a rigorous foundation towards real and complex ...
-1
votes
0answers
27 views

How did Thomson find the value of magnetic force?

In 1881 Thomson discovered the value of magnetic force as v/2 x B. Can you describe his experiment and, possibly, the reason of his mistake.
7
votes
4answers
180 views

How did early scientists know if a current was changing direction? (AC vs. DC)

How did Faraday, Ampere and Hippolyte Pixii know that electricity 'traveled' at all? Let alone in a certain direction? And that it was reversing direction with certain early generators?
7
votes
1answer
87 views

Who solved the particle-in-a-box model first?

I got curious who invented the particle-in-a-box model first. It is really simple and intuitive. I was googling to find the original author who suggested it but I only get textbook or webpages as ...
0
votes
1answer
83 views

How to understand `After quantum mechanics, nature itself suddenly became linear`?

How to understand Freeman Dyson's Saying: After quantum mechanics, nature itself suddenly became linear.
0
votes
1answer
52 views

Real effects long thought to be coincidences

What examples are there of scientific effects or correlations that we now know to be real, and were known about for a long time but thought to be coincidences? To give an example of the kind of thing ...
0
votes
1answer
61 views

Cantor's fortune

Wiki says that his transfinite numbers met opposition: Henri Poincaré referred to his ideas as a "grave disease" infecting the discipline of mathematics,[8] and Leopold Kronecker's public ...
0
votes
2answers
61 views

What is the purpose of Gauss in his letter to János Bolyai when he mentioned “howling Boeotians”?

I'm wondering what is the purpose of Gauss in his letter to János Bolyai when he mentioned "howling Boeotians"? Is it related to some scientists or philosophers that opposed non-Euclidean geometry? I ...
0
votes
1answer
48 views

Did Cyrano de Bergerac's space ship have retro-rockets?

In this answer I cite and quote some surprising information; that the real Cyrano de Bergerac (not the one in the play) had written of using a rocket ship to go to the Moon circa 1650. As strange as ...
3
votes
0answers
54 views

A portrait of Bombelli

Is there any known portrait of Rafael Bombelli? I don't think so, but if you visit his MacTutor biography, you will see there this picture: It is clear to me that this cannot possibly be a picture of ...
3
votes
1answer
57 views

Gregory's integration of $\sec\theta$

The integral of the secant function was first correctly conjectured by Henry Bond in the 1640s, and Isaac Newton was aware of his conjecture in 1665, although no proof was published until 1668. Of ...
5
votes
2answers
177 views

What is the origin of “normal” in normal coordinates and normal modes?

I am trying to understand why vibrational modes of polyatomic molecules are called "normal" mode of vibrations and with corresponding normal coordinates. What is the origin of the term normal here? I ...
4
votes
1answer
101 views

Why did Schrödinger choose a cat for his thought experiment?

While Schrödinger's cat thought experiment serves a greater purpose than animal cruelty enjoyment, one of the possible results is a dead cat. Gruesome or not is one's appreciation, but you will ...
4
votes
1answer
77 views

Did Nikolai Luzin plagiarize?

Luzin was accused of plagiarism and other misconduct by Kolmogorov and other students during the Luzin Affair of 1936. Were these allegations actually true?
1
vote
1answer
69 views

“Species” and “terms” meaning polynomials and monomials

I found in some old Latin texts and their translations that polynomials were once called "species" (if I understand correctly that they meant the same thing, but it looks like it). And their ...
3
votes
1answer
36 views

Were there proofs of the Lebesgue Differentiation Theorem without using maximal functions?

Is there a proof of the Lebesgue Differentiation Theorem that does not involve the Hardy-Littlewood Maximal Function? For example, did Lebesgue prove it? If there is such a proof, where can I find it?...
0
votes
1answer
39 views

Did Einstein say “We cannot solve our problems with the same thinking we used to create them”?

According to various sources on the Web, Albert Einstein is likely to have said or written one of the following: Probleme kann man niemals mit derselben Denkweise lösen, durch die sie entstanden ...
5
votes
1answer
38 views

When was the first appearance of the abbreviation RSA?

When was the first publication of the abbreviation RSA (Rivest, Sharmir, Adleman) because it does not appear in Martin Gardner’s article of 1977 which is at the following url: https://simson.net/ref/...
4
votes
2answers
86 views

Why were extremely accurate sundials necessary in India?

I'm thinking specifically of the Jantar Mantar sundial in Jaipur, India, the Samrat Yantra. It is apparently accurate to within 2 seconds, and was built around 1740. What would such an accurate ...
-2
votes
2answers
101 views

How did the integer degrees angles counting being first adopted in geometry and mathematics? [duplicate]

The purpose of this question is trying to know originally how did counting in integer degrees angles from (one degree to $360$ degrees) being adopted basically in geometry, despite the impossibility ...
1
vote
0answers
56 views

Example of: Two researchers working on the same question but get opposite conclusions [closed]

I wish to know about whether such example exists, could someone please help and tell me some stories about this? p.s: Also I wonder why such thing can happen. I wish the two main characters in the ...
4
votes
1answer
65 views

Who coined the term “immune system”?

Who coined the term "immune system"? The OED lists the following as its earliest example of the term "immune system": 1943 Science 30 Apr. 406/1Complement..is removed by the addition of an ...
1
vote
0answers
59 views

who was the “nabob” Truesdell thinking of?

In his "Rational Thermodynamics" 1983, 2nd ed., on page 55, Truesdell writes The axiomatization of Caratheodory has left a baneful legacy: Born's endorsement, which for a long time promoted in ...
2
votes
1answer
73 views

What does Rousseau mean by “Baroco des Logiciens”?

In the Wikipedia "Baroque" article I found this quote from "Dictionnaire de Musique" by Jean-Jacques Rousseau: BAROQUE. Une Musique Baroque est celle dont l’Harmonie est confuse, chargée de ...
3
votes
1answer
73 views

Did Sommerfeld derive or measure the fine structure constant the first time he introduced it?

I used Wikipedia to try to figure this out but I am not clear on the explanation. As for Newton's Law of Gravitation does not give the value for the Gravitational constant but it was measured by ...
2
votes
0answers
69 views

Question about Leibniz's “characteristic numbers” and propositional logic

The wikipedia article on Gottfried Wilhelm Leibniz mentions, in the chapter on symbolic thought, that: "Leibniz saw that the uniqueness of prime factorization suggests a central role for prime numbers ...
2
votes
4answers
151 views

Mathematics development can sometimes **exceed** the practical needs, right?

I read below paragraph from the book "A Friendly Introduction to Number Theory": The use of "$i$" to denote the square root of negative $1$ dates back to the days when people viewed such numbers ...
2
votes
1answer
44 views

Why is the amount of charge needed to generate 1 unit of electric flux, called permittivity?

This keeps confusing me. I keep imagining "permittivity" as being "The ability for a substance to permit electricity", when it is the opposite. High permittivity means it is hard (requires a lot of ...
1
vote
2answers
106 views

Where does the prefix “super” from “supersymmetry” come from?

Where does the prefix "super" from "supersymmetry" come from?

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