Rudolf Clausius
German physicist and mathematicianWikipedia
22
MENTIONS
17
EPISODES
17
PODCASTS
Search complete. 22 mentions across 17 episodes found for "Rudolf Clausius".
Oct 10, 2026
Leon HarveyNARRATOR
The eminent physicist Clerk Maxwell, in the middle of the 19th century, while giving a proof of that law, admitted that reversals are possible by imagining a sorting demon who could sort out the smaller particles and separate the slower ones from the faster ones.
Leon HarveyNARRATOR
This second law of thermodynamics brought in the idea of energy level, of unavailable energy, or entropy as it was called by Clausius, which was constantly increasing.
Leon HarveyNARRATOR
In the theory herein set forth, we suppose that reversals of the second law are a regular phenomenon and identify them with what is generally known as life.
Leon HarveyNARRATOR
This changes the idea of unavailable energy into that of a reverse fund of energy used only by life and created by non-living forces.
speaker_0HOST
Scott's Irish physicist Lord Kelvin was the first to formulate a concise definition of thermodynamics in 1854, which stated, Thermodynamics is the subject of the relation of heat to forces acting between contiguous parts of bodies and the relation of heat to electrical agency.
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German physicist and mathematician Rudolf Clausius restated Carnot's principle, known as the Carnot cycle, and gave the theory of heat a more accurate and sounder basis.
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His most important paper, On the Moving Force of Heat, published in 1850, first stated the second law of thermodynamics.
speaker_0HOST
In 1865, he named the concept entropy.
speaker_0HOST
Fuckin' Boltzmann.
speaker_0HOST
Fuckin' Boltzmann.
speaker_0HOST
In 1870, this Rudolf Clausius guy...
speaker_0HOST
Fuckin' In 1870, he introduced the Varial Theorem, which applied to heat.
Ruth IrwinGUEST
In other words, it's built on the idea of out of date physics.
Ruth IrwinGUEST
So around about 1900, the turn of the century, quite a few different people, including a guy called Clausius, came up with the idea of entropy.
Ruth IrwinGUEST
So the first law of entropy is no energy or matter, and energy and matter are sort of almost interchangeable, is ever lost.
Ruth IrwinGUEST
There is no matter in the universe, no matter is ever lost.
Leon HarveyNARRATOR
The eminent physicist Clerk Maxwell, in the middle of the 19th century, while giving a proof of that law, admitted that reversals are possible by imagining a sorting demon who could sort out the smaller particles and separate the slower ones from the faster ones.
Leon HarveyNARRATOR
This second law of thermodynamics brought in the idea of energy level, of unavailable energy or entropy as it was called by Clausius, which was constantly increasing.
Leon HarveyNARRATOR
In the theory herein set forth, we suppose that reversals of the second law are a regular phenomenon and identify them with what is generally known as life.
Leon HarveyNARRATOR
This changes the idea of unavailable energy into that of a reverse fund of energy used only by life and created by non-living forces.
Steve KatesHOST
Remember, it's not the voltage, it's the amperage that's really the powerhouse.
Steve KatesHOST
Rudolf Clausius, the second law of thermodynamics.
Steve KatesHOST
Heat moves from hot to cold.
Steve KatesHOST
Entropy in a closed system will always increase.
speaker_2NARRATOR
It's called entropy.
speaker_2NARRATOR
In 1865, a German physicist called Rudolf Clausius gave it its name.
speaker_2NARRATOR
Entropy is often described as disorder, but there's a more precise way to think about it.
speaker_2NARRATOR
It's about counting.
Amelia ChesleyNARRATOR
Let us then dwell a little longer upon the results obtained in these years, that we may better appreciate the next attempt at a synthetic philosophy, which was made by Herbert Spencer.
Amelia ChesleyNARRATOR
Grove, Clausius, Helmholtz, Joule, and a whole group of physicists and astronomers, as also Kirchhoff, who discovered the spectroscopic analysis and gave us the means of determining the composition of the most distant stars, these in rapid succession at the end of the 50s proved the unity of nature, throughout the inorganic world.
Amelia ChesleyNARRATOR
To talk of certain mysterious, imponderable fluids, calorific, magnetic, electrical, at once became impossible.
Amelia ChesleyNARRATOR
It was shown that the mechanical motion of molecules, which takes place in the waves of the sea or in the vibrations of a bell or a tuning fork, was adequate to the explanation of all the phenomena of heat, light, electricity, and magnetism, that we can measure them and weigh their energy.
Matt O'DowdHOST
However, an inefficient engine will slowly deplete the difference in temperature, reducing the heat flow, and the engine winds down.
Matt O'DowdHOST
Around a half century after Carnot, Rudolf Clausius was inspired to quantify this tendency of heat energies to decay over time.
Matt O'DowdHOST
Enter entropy.
Matt O'DowdHOST
Clausius defined entropy as the internal property that changes as heat energy moves around within a system.
Matt O'DowdHOST
Specifically, the change in entropy of each reservoir is the heat energy going into or out of that reservoir divided by its temperature.
Matt O'DowdHOST
For a Carnot cycle, the overall change in entropy is zero.
Matt O'DowdHOST
But for any less efficient cycle, entropy increases.
Matt O'DowdHOST
In fact, an increase in entropy means that the heat reservoirs are approaching the same temperature, reducing their capacity to do useful work.
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