Rudolf Clausius

Macquorn Rankine and the Laws of Thermodynamics

Macquorn Rankine and the Laws of Thermodynamics

On July 5, 1820, Scottish mechanical engineer William John Macquorn Rankine was born. He was a founding contributor, with Rudolf Clausius and William Thomson (Lord Kelvin), to the science of thermodynamics, particularly focusing on the first of the three thermodynamic laws. “Discrepancy between theory and practice, which in sound physical and mechanical science is a delusion, has a real existence in the minds of men; and that fallacy, through rejected by their…
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James Clerk Maxwell and the Electromagnetic Fields

James Clerk Maxwell and the Electromagnetic Fields

On June 13, 1831, Scottish physicist James Clerk Maxwell was born. His most prominent achievement was formulating a set of equations that united previously unrelated observations, experiments, and equations of electricity, magnetism, and optics into a consistent theory. According to his theory he has demonstrated that electricity, magnetism and light are all manifestations of the same phenomenon, namely the electromagnetic field. This has been called the “second great unification in physics”, after…
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Rudolf Clausius and the Science of Thermodynamics

Rudolf Clausius and the Science of Thermodynamics

On January 2, 1822, German physicist and mathematician Rudolf Julius Emanuel Clausius was born. He is considered one of the central founders of the science of thermodynamics, who introduced the concept of entropy in 1865. “If for the entire universe we conceive the same magnitude to be determined, consistently and with due regard to all circumstances, which for a single body I have called entropy, and if at the same time we introduce…
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Johannes van der Waals –  A Pioneer in the Molecular Sciences

Johannes van der Waals – A Pioneer in the Molecular Sciences

On November 23, 1837 Dutch theoretical physicist and Nobel Laureate Johannes Diderik van der Waals was born. He is best known for his work on an equation of state for gases and liquids. “…There can be no doubt that the name of Van der Waals will soon be among the foremost in molecular science”  — James Clerk Maxwell’s remarks in Nature magazine (1873). Johannes van der Waals Background Johannes Diderik van der Waals…
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