# All Questions

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20 views

### Incommensurables and their effects on ratios

I am currently reading "The History of Mathematics" by Uta C. Merzbach. I'm confused on the significance and the disruption caused by the discovery of incommensurable numbers. I get that all ...
17 views

### Not able to understand "female seed" in Galen work?

I ask this Question yesterday, and I have also read the Journal paper provided in answer, but I am more confused than Galen here, why we are not able to understand what Galen has Idea about the female ...
325 views

### Where can I find Grothendieck's letter of resignation from Bourbaki?

I encountered Grothendieck's resignation letter from Bourbaki along with its English translation not too long ago on the web, but for now it seems it's nowhere to be found. I've scoured through the ...
70 views

### What is "female seed" in Galen's work?

On the last page (page 84) of Anthony Preus's paper$^\star$ on Galen's criticism of Aristotle's Conception Theory, the author writes that Galen discussing the second book of "On Seed", which ...
71 views
+50

### Diffraction pattern of Michelson's echelon

Has anyone used Michelson's echelon (pictured below), a very famous type of diffraction grating in the 1920s? I am wondering how did the diffraction image look like from this type of transmission ...
94 views

### Who is Donald Fisk?

In stochastic calculus, the name Stratonovich appears all over the place. However, even though Donald Fisk supposedly obtained similar results, his name appears nowhere. Who was Donald Fisk? I cannot ...
36 views

### Nicollet and the notions of systematic and random errors

I recently read Ken Alder's "The measure of all things" about the first steps of the metric system definition. The project described in the book was the measure the meridian arc between ...
83 views

### What was Einstein's first publication of the final form of general relativity?

What was Einstein's first published exposition of his final form of general relativity, be it a scientific article or a book? I've been googling the answer for hours now, with no luck, really. The ...
84 views

### What led to the formula $W=\vec{F} \cdot \overrightarrow{d s}$? [closed]

For me the concept of energy in physics is the least intuitive one as in all the books on Physics that I have read so far. The concept of energy have been the least intuitive one as I cannot ...
104 views

### Was there ever a word for 24 like "dozen" for 12? [closed]

The English language has more than one word for 12 (twelve, dozen) and 12^2 (one hundred and forty-four, gross), but has there ever been a word for 2*12 other than twenty-four? I would also be ...
2k views

### Who was the first to hypothesise that gravity from one mass causes the spacetime around another mass to curve?

Was it Einstein? Or was there someone before him to hypothesise this?
92 views

### What were some historically important Fermi estimates in the history of science?

What were some back-of-the-envelope estimates that scientists made where the result of the estimate was important to either the intellectual development of the field or had significant social ...
66 views

69 views

### When and how did signal processing reach the core of functional analysis?

Functional analysis and signal processing have a strong bond and I am trying to understand how and when it all started. Technically, signal processing is heavily based on Fourier analysis, which helps ...
5k views

### Historical example of research papers being misinterpreted due to poor wording and creating controversy?

Is there any example of major controversy in the scientific community caused due to poor wording and/or misinterpretation of words?
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### Historical example of research papers being misinterpreted due to poor wording and creating controversy? [duplicate]

Is there any example of major controversy in the scientific community caused due to poor wording and/or misinterpretation of words?
98 views

### Who first proposed the idea of "resolution of the identity"?

Who first proposed the idea of "resolution of the identity" as used in the functional calculus of self-adjoint operators? Was it von Neumann? In Japanese, it translates as "resolution ...
163 views

### Why was solving polynomial equations historically considered so interesting?

From reading a few accounts of the unsolvability of the quintic, I am told that, e.g., there were public contests in which people competed to solve polynomial equations, and that over the course of ...
46 views

### Which scientist(s) first measured the elementary charge and how did they do it? [duplicate]

I would be grateful if anyone could shed some light on these questions. Which scientist(s) first measured the elementary charge? If it wasn't measured in a straightforward experimental setting, and ...
77 views

### In physics, how are two quantities found to be proportional to each other? [closed]

For instance, force was discovered to be proportional to mass and acceleration. How are these proportional relationships discovered and proven to be true?
71 views

### Tycho Brahe and the distance to the fixed stars

How far away did Tycho Brahe estimate that the fixed stars were? In multiples of our sun I imagine!
48 views

### What is the difference between caloric and heat?

What is the difference between caloric and heat? Is there a difference?
47 views

### What did Copernicus and Tycho Brahe actually contend about stellar parallax? [duplicate]

It's often stated that Tycho Brahe objected to Copernicus' heliocentric model on the basis that, if Earth were revolving around the Sun, stellar parallax would be observable, due to the changing ...
91 views

### Are there examples where interpretivist findings have been confirmed by (post-)positivist methodology?

Social sciences, especially sociology, embrace a distinction between interpretivism 1 and (post-)positivism 2. Some social scientist embrace one method over the other and some speak in favor of both. ...
85 views

### Who first popularized the term "proof without words"?

Speaking as an outsider, the formalist philosophy of mathematics appears to structure most mathematical endeavors since the early 20th century, whether or not most mathematicians would call themselves ...
173 views

### Roughly when did it become accepted by the western scientific community that human space flight could be possible in the future?

Safe human travel into space had to have become scientifically accepted as plausible long before any nations managed to successfully pull it off (and unsafe or one-way human travel likely earlier than ...
2k views

### When did they begin to make left and right shoes?

In the memoirs of the Polish mathematician Hugo Steinhaus ("Mathematician for all seasons", vol. I, English translation, Springer, 2015) he recollects a conversation with Henri Lebesgue in ...
134 views

### Why did Newton invent Calculus?

There are so many articles based on this. I want to know more opinions on this. Newton was a great guy who not only invented Calculus but also started a branch of physics called Mechanics. I want to ...
144 views

### Abel-Runge lemma [closed]

I read recently that there exists an Abel-Runge lemma. What is it? Google does not give an answer. I know about Abel's lemma (the summation by parts) and the Runge-Kutta method but I have never heard ...
83 views

### What technology was used to determine the shape of the blackbody spectrum at the 19th century?

The shape of the blackbody radiation spectrum was known in the 19th century from experimental measurements, and before the theoretical discovery of Planck's law. At those times, how did people manage ...