1857 ⟶ Rudolf Clausius introduces the concept of mean free path

Rudolf Clausius: Introduced the concept of mean free path
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Year
1850
1857
1863
1865

⚙️ William Thomson and Rudolf Clausius propose the Second Law of Thermodynamics

51 – William Thomson, 1st Baron Kelvin & Rudolf Clausius: Second law of thermodynamics⟶
William Thomson and Rudolf Clausius propose the Second Law of Thermodynamics (1850)
ThermodynamicsSecond LawEntropyLord KelvinRudolf ClausiusPhysics19th Century
United KingdomUnited KingdomGermanyGermany

📏 Rudolf Clausius introduces the concept of mean free path

Rudolf Clausius: Introduced the concept of mean free path⟶
Rudolf Clausius introduces the concept of mean free path (1857)
Mean Free PathKinetic TheoryRudolf ClausiusPhysicsStatistical Mechanics19th CenturyScience
GermanyGermany

💨 Rudolf Clausius introduces molecular motions

Rudolf Clausius: Introduced translational, rotational, and vibrational molecular motions⟶
Rudolf Clausius introduces molecular motions (1857)
Molecular MotionKinetic TheoryRudolf ClausiusPhysicsThermodynamics19th CenturyScience
GermanyGermany

⚙️ Clausius Introduces Entropy

Rudolf Clausius: Entropy⟶
Clausius Introduces Entropy (1863)
EntropyThermodynamicsRudolf ClausiusPhysics19th Century ScienceSecond Law of ThermodynamicsEnergyHeat
GermanyGermany

🧪 Loschmidt Determines Avogadro Constant

Johann Josef Loschmidt determines exact number of molecules in a mole, later named Avogadro constant.⟶
Loschmidt Determines Avogadro Constant (1865)
ChemistryPhysicsLoschmidtAvogadro ConstantMolecular Physics19th CenturyKinetic TheoryStatistical Mechanics
AustriaAustria

🌡️ Clausius' Definition of Entropy

Rudolf Clausius: Definition of entropy.⟶
Clausius' Definition of Entropy (1865)
PhysicsThermodynamicsEntropyClausius19th CenturyHeatStatistical MechanicsEnergy
GermanyGermany