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3 votes
1 answer
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When was Kelvin's vitalism rejected in physics?

In 1851, in one of the most famous publications in the history of thermodynamics, On the Dynamical Theory of Heat, with numerical remits deduced from Mr JOULE'S equivalent of a Thermal Unit. etc., ...
hyportnex's user avatar
  • 347
1 vote
1 answer
85 views

What's the history of the use of crude oil for transportation before the Industrial Revolution?

What's the history of the use of crude oil for transportation before the Industrial Revolution? Wiktionary says the Latin word petroleum, from petra (“rock”) + oleum (“oil”), is medieval Latin, so ...
Geremia's user avatar
  • 5,371
1 vote
2 answers
207 views

Why energy rate did not replace power = Force times velocity?

After reading the history of horse power (and power), the physical definitions for them and after testing the theory in rally races, I'm curious what were the reasons for selecting this word (power) ...
marius-ciclistu's user avatar
5 votes
1 answer
234 views

Are there any direct comments by Isaac Newton on Leibniz's living force / vis-viva?

The living force or the vis-viva is a quantity usually attributed to Leibniz (although there were a few other people who identified it as a conserved quantity in certain collisions earlier). Many ...
Maximal Ideal's user avatar
0 votes
1 answer
128 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 ...
user1086173's user avatar
2 votes
0 answers
66 views

Since when is it commonplace to use conservation of energy for dynamics problems?

If I throw an object, I can derive its trajectory using the forces acted on it. I can also do the same using conservation of energy. Since when is it commonplace to use conservation of energy for ...
zabop's user avatar
  • 121
1 vote
0 answers
82 views

During which period did the name Work-Energy theorem enter physics discourse

Throughout the centuries the label 'principle' has been applied liberally. That blurs the lines, it devaluates the word 'principle'. As an example of a good use of the word 'principle' the Principle ...
Cleonis's user avatar
  • 804
13 votes
7 answers
4k views

What are the earliest inventions to store and release energy (e.g. fly wheels)?

I am interested in very early inventions that allowed energy to be stored and released after a delay even it's just a short time. With "invention" I mean a novelty that is the result of ...
Jan's user avatar
  • 247
3 votes
2 answers
701 views

Why did energy-momentum relationship have to wait until 1928 to be established?

This web page shows how to derive energy-momentum relationship, $E_{total}^2=p^{2}c^{2}+\left( mc^{2}\right) ^{2}$, given the following equations. Please note that some sources make a distinction ...
PG1995's user avatar
  • 387
9 votes
1 answer
301 views

"Nuclear fusion is 30 years away" since when?

It's a well-known, running joke (or criticism) in the fusion community that Fusion is always 30 years away. refering to the considerable difficulties that harnessing nuclear fusion as an energy ...
stafusa's user avatar
  • 305
5 votes
3 answers
985 views

How did Huygens derive the conservation law for of kinetic energy?

In the book 'Energy - The Subtle Concept' by Energy, the Subtle Concept by Jennifer Coopersmith the author says that Huygens was the first to use the term $mv^2$ in physics. He was considering elastic ...
user194517's user avatar
4 votes
1 answer
478 views

How did people figure out the formula for mechanical work, and related it to energy?

What developments led to the definition of Work as the dot product of Force and Displacement vectors? I did some searching but couldn't find a satisfying answer. According to what I have read, the ...
user194517's user avatar
0 votes
0 answers
110 views

Max Planck and energy quantization idea

Did Planck have an intuition behind the idea of energy quantization of atomic oscillators and radiation, or was it just a mathematical trick to derive his distribution law?
Karim mohie's user avatar
2 votes
1 answer
112 views

When was the energy of the electron first measured?

Can you give a few details? where/how was it measured, was the value .511MeV found right away, etc.. Readers who'd like a proper answer to the question may find this link useful. The value found by ...
user157860's user avatar
1 vote
1 answer
131 views

Was annihilation considered in 1905?

The positron was discovered in 1932, did physicist have any knowledge or assumed that matter could be annihilated into energy at the start of XX century?
user157860's user avatar
-2 votes
1 answer
71 views

Was the equivalence of mass-energy referred to the rest or kinetic mass? [closed]

Can you explain if einstein's M=C refers to the rest mass of the electron which iss turned into energy by annihilation or to the relativistic/ electromagnetic mass or both? Since at the time ...
user157860's user avatar
1 vote
1 answer
261 views

When was relativistic mass first observed?

I counldn't find precise info on who/ when successfully observed relativistic mass increase. The only thing I found by a Google search is that it was first confirmed in 1908 in experiments with ...
user157860's user avatar
2 votes
1 answer
193 views

Who discovered the Virial Theorem?

Who first discovered the Virial Theorem? Who first wrote it down? When? Where? My guess: a 19th century thermodynamicist
Geremia's user avatar
  • 5,371
2 votes
1 answer
119 views

References about the the development of the concept of mechanical work

I'm looking for references about how the concept of mechanical work ("$\boldsymbol{F}\cdot\mathrm{d}\boldsymbol{r}$") or the concept of mechanical power ("$\boldsymbol{F}\cdot\boldsymbol{v}$") came ...
pglpm's user avatar
  • 123
4 votes
2 answers
3k views

Why is kinetic energy denoted by the letter $T$ in quantum mechanics?

Kinetic energy is often written as $K$, $KE$ or $E_k$. Where does $T$ come from in quantum mechanics? Why and how did it come to be different?
Arch Stanton's user avatar
0 votes
0 answers
54 views

Query re Physics-related quote about the amount of energy in water

In The Children's Encyclopedia, edited by Arthur Mee which was in print from 1908 to 1964 (Vol 3, p 1614), there is an essay about Energy in which the following is asserted: A man of science once ...
Leon Conrad's user avatar
4 votes
2 answers
155 views

Who assigned the name "work" to the quantity $\int F\,{\rm d}r$?

I am looking into the historical perspective of how the concept of work and energy came about: who coined the terms "mechanical work" and "energy", and how the concept evolved over time. I know that ...
user avatar
-1 votes
1 answer
159 views

How did crude oil pipelines work before WW2?

Before World War Two, how did pipelines work for crude oil? What kind of metal or plastic were they made out of? What kind of sensors and monitoring did they need? Did they have "pigs" that travel up ...
DrZ214's user avatar
  • 861
2 votes
0 answers
82 views

How exactly was the principle of conservation of energy discovered? [duplicate]

How did we come to know that, for example, the quantity Work=Force*distance is conserved?
Khalid T. Salem's user avatar
7 votes
2 answers
394 views

Who was the first scientist to suggest that objects can keep moving without applied force?

In the old days Aristotels argued that object needs a force to keep going in 'space'. Some philosophers, Philoponus and Buridanus (?), later argued that there was a need for some kind of 'impetus'. ...
Marijn 's user avatar
  • 383
3 votes
1 answer
68 views

Clausius regarding energy

Clausius somewhere wrote (in German): ``The energy of the world is constant.'' This is a well known quotation. What is the source, publication, the rest of the paper? [Obviously he was summarizing ...
Gottfried William's user avatar
9 votes
1 answer
251 views

Landau doubting conservation of energy---and what followed

When the original beta decay experiments seemed to suggest that energy was not a conserved quantity, Landau (among others) proposed that energy conservation was a statistical law rather then a ...
Sruli Herskovic's user avatar
7 votes
2 answers
2k views

How did Newton establish the conservation laws in the Principia?

In the contemporary axiomatic description the conservation laws in mechanics are deduced from Noether's Theorem using the homogeneity and isotropy of space and time. How did Newton, if he did, ...
Mozibur Ullah's user avatar
15 votes
1 answer
1k views

What were the early empirical tests of Einstein's mass-energy equivalence $E=mc^2$?

Near the end of Einstein's 1905 paper on $E=mc^2$ he states (in the translation by Perrett and Jeffery): It is not impossible that with bodies whose energy-content is variable to a high degree (e.g....
user avatar
4 votes
1 answer
442 views

History of Energy

Can anyone suggest me some book/article explaining how and why the quantity named 'Energy' made its way into physics? I have gone through "Lectures on Physics" (Vol. 1) by R.P. Feynman and have been ...
adagiosostenuto's user avatar
25 votes
2 answers
4k views

What was the vis viva controversy, including its philosophical aspects?

Leibniz's concept of vis visa (literally translated as living force) was a precursor to our modern concept of kinetic energy. His formula for it was close to the modern non-relativistic one: $mv^2$, ...
Michael Weiss's user avatar