Thermodynamics Forum

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Undergrad Understanding the physics of chimneys....

  • fog37
  • · Replies 11 ·
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11

High School Is Mean Temp in 2 phase Heat Exchangers Higher Than Logarithmic Mean?

  • Devin-M
  • · Replies 78 ·
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Graduate Equilibrium, entropy, probability - Release of constraints

  • SchroedingersLion
  • · Replies 2 ·
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2

Graduate Block universe and entropy increase

  • Ebi Rogha
  • · Replies 6 ·
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6

Undergrad Why does entropy grow when a solar system is formed?

  • Rovolvo
  • · Replies 3 ·
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3

Undergrad Heat capacity for a real gas using the ideal gas (zero pressure) equation

  • gmaverick2k
  • · Replies 32 ·
2
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32

High School Lorenz COP of a heat pump and the temperatures of the hot/cold reservoirs

  • Devin-M
  • · Replies 3 ·
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3

High School Maxwell-Boltzmann distribution under the influence of a gravitational field

  • merlyn
  • · Replies 2 ·
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2

High School Is time a consequence of 2nd law of thermodynamics?

  • Ebi Rogha
  • · Replies 16 ·
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16

Graduate Can high air velocity in vacuum system create "freezing" of the pipe?

  • kaigoss69
  • · Replies 3 ·
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3

Undergrad Volume of water consumed by vacuum

  • northmop
  • · Replies 5 ·
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5

High School Can a Heat Pump and Stirling Engine Create a Perpetual Energy Cycle?

  • Devin-M
  • · Replies 6 ·
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6

Graduate Thermal shock wave question from my hydrodynamics simulation

  • kjssag
  • · Replies 18 ·
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18

Undergrad Entropy and Heat Capacity Relation

  • cwill53
  • · Replies 2 ·
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2

Graduate Solve Asymmetric Piston Problem for SL

  • SchroedingersLion
  • · Replies 5 ·
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5

Undergrad Cycle of an air conditioner and power consumed

  • Delta2
  • · Replies 8 ·
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8

Graduate From weatherstation data to solar irradiation on specific surface

  • BM99
  • · Replies 2 ·
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2

Graduate Connection between the two definitions of entropy

  • DaTario
  • · Replies 11 ·
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11

Graduate Heat Transfer - Critical Radius of Insulation

  • Thevan
  • · Replies 15 ·
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15

Undergrad Temperature vs moisture content to sustain a fire in a given material?

  • mathlol
  • · Replies 5 ·
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5

Graduate Calculate the distribution of energies from momenta

  • SchroedingersLion
  • · Replies 17 ·
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17

Undergrad Metals as Infrared Reflectors and their Temperature

  • fog37
  • · Replies 1 ·
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1

Graduate EM re-radiation from a metal object (antennas)

  • Johan L
  • · Replies 14 ·
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14

Undergrad Does combusted gas travel faster in a vacuum tube?

  • Limebat
  • · Replies 2 ·
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2

High School NIST database and compressibility factor Z

  • FranzSC
  • · Replies 1 ·
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1

Undergrad What happens when gas is combusted while moving?

  • Limebat
  • · Replies 2 ·
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2

Undergrad A query about heat capacity and specific heat capacity

  • ellieee
  • · Replies 8 ·
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8

Undergrad Instantaneous Gas Compression: temperature increase?

  • FranzS
  • · Replies 13 ·
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13

Graduate What's the deal with plasma physicists setting heat cap. ratio to 3?

  • Twigg
  • · Replies 2 ·
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2

Graduate Radiation leak test instruments

  • Happy Days2021
  • · Replies 31 ·
2
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31

Graduate Heat conduction from an isotherm spherical cap

  • umby
  • · Replies 20 ·
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20

Graduate What exactly does the proposed 4th law of thermodynamics mean?

  • DeathByKugelBlitz
  • · Replies 3 ·
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3

Graduate Your thoughts about the entropy of coal?

  • maajdl
  • · Replies 3 ·
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3

Undergrad Calculating how much heat must be added to increase temp

  • john ryan
  • · Replies 1 ·
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1

Graduate The Draper point and why can't we see human radiation

  • jaumzaum
  • · Replies 14 ·
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14

Graduate Definition of a system in Boltzmann entropy

  • timjdoom
  • · Replies 1 ·
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1

Undergrad Sound Engineering: Why's it so hard to get things like timbre right?

  • ardnog
  • · Replies 8 ·
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8

Undergrad Sensitivity of the liquid-in-glass thermometer

  • Jonathan008
  • · Replies 1 ·
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1

Undergrad Why the temperature of a car does not increase with velocity?

  • Mohammad Sakib
  • · Replies 10 ·
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10

Graduate What causes the peak in the thermal noise spectrum of an RLC circuit?

  • BillKet
  • · Replies 15 ·
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15

Graduate Absolute zeros other than temperature (e.g. pressure)

  • greypilgrim
  • · Replies 11 ·
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11

Undergrad Evolution of a Boltzman distribution

  • kelly0303
  • · Replies 2 ·
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2

Graduate Thermodynamic Axioms: Establishing Temperature, Internal Energy & Entropy

  • swampwiz
  • · Replies 1 ·
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1

Undergrad How much radiation is too much?

  • CommissarCold
  • · Replies 18 ·
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18

Undergrad How can a process be isentropic but not reversible or adiobatic?

  • bardia sepehrnia
  • · Replies 2 ·
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2

Undergrad Friction/heat kinetic energy - reactive force

  • TonyCross
  • · Replies 73 ·
3
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73

Undergrad Necessary conditions for energy harvesting

  • Seppo Turunen
  • · Replies 49 ·
2
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49

High School Gas Interaction in a Box: Force and Pressure Dynamics

  • etotheipi
  • · Replies 14 ·
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14

Graduate Thermodynamics problem -- Pressure oscillations in a jar

  • LagrangeEuler
  • · Replies 7 ·
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7

High School Where am I going wrong (energy transfer between black bodies)?

  • Steve4Physics
  • · Replies 4 ·
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4

Undergrad Feynman's reversible and irreversible machines

  • codered1
  • · Replies 5 ·
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5

Graduate Physical meaning of thermal conductivity tensor

  • Hansol
  • · Replies 2 ·
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2

Undergrad How to do the calculations for a Wheatstone Bridge

  • songoku
  • · Replies 15 ·
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15

Undergrad Question regarding dh, du, cp, cv for ideal gases

  • Uchida
  • · Replies 3 ·
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3

Graduate Isothermal and adiabatic air compression -- different expressions

  • Ameen1985
  • · Replies 13 ·
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13

Undergrad Life vs Entropy: Investigating an Unexpected Paradox

  • brajesh
  • · Replies 23 ·
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23

Undergrad Wave frequency, medium and temperature

  • latot
  • · Replies 5 ·
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5

Graduate Derive Cattaneo–Vernotte Law w/Proof

  • mohammed El-Kady
  • · Replies 1 ·
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1

Undergrad How Is Entropy Calculated in an Irreversible Gas Expansion?

  • MichaelWiteman
  • · Replies 33 ·
2
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Graduate Entropy change for spontaneous/ irreversible gas expansion

  • zanick
  • · Replies 4 ·
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4

Undergrad Does Newton's Third law apply to torque/rotation?

  • alkaspeltzar
  • · Replies 127 ·
5
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127

Undergrad Are the Laws of Thermodynamics still applicable in modern physics?

  • saddlestone-man
  • · Replies 5 ·
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5

Undergrad What is the purpose of the Prandtl Mixing Length for turbulent flow?

  • Master1022
  • · Replies 2 ·
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2

Graduate Understanding Entropy: A Fresh Perspective from Brian Greene's Latest Book

  • DaveC426913
  • · Replies 3 ·
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3

Undergrad Is it possible to calculate an incandescent bulb's temperature from V?

  • HomeExperiement
  • · Replies 45 ·
2
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45

Undergrad Irreversible Isochoric Process in a Cycle

  • Robert Davidson
  • · Replies 8 ·
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8

Graduate Impact of the engine thermostat temperature setting on engine efficiency

  • onargaroberts
  • · Replies 8 ·
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8

High School Why We Learn Reaumur Temperature Scale in High School Physics

  • bagasme
  • · Replies 24 ·
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24

Undergrad Gibbs paradox: an urban legend in statistical physics

  • autoUFC
  • · Replies 187 ·
7
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187

Undergrad Does Copper Conduct Heat Better than cPVC?

  • Steven Bolgiano
  • · Replies 2 ·
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2

Graduate Understanding Enthalpy: Confusion Cleared Up | Thermodynamics Course"

  • Oliver321
  • · Replies 14 ·
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14

High School Looking for a good introductory book on thermodynamics

  • al_9591
  • · Replies 3 ·
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3

Graduate Understanding the Laws of Thermodynamics as described by Feynman

  • bryanso
  • · Replies 4 ·
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4

Undergrad Can Joule-Thomson effect freeze air?

  • Malapine
  • · Replies 8 ·
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8

Graduate Can you reverse entropy without using energy?

  • XXXtentacionXXX
  • · Replies 2 ·
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2

Undergrad Stratification of air in a closed system vs the stack effect

  • Elquery
  • · Replies 1 ·
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1

High School Does the Order of insulating layers matter?

  • Kaguro
  • · Replies 5 ·
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5

Graduate Thermodynamics of a Fire Resistant Safe

  • alex282
  • · Replies 3 ·
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3

Undergrad Van der Waals Equation: How Surface is Considered

  • FranzS
  • · Replies 39 ·
2
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39

Graduate Is EM Radiation Present with Free vs Bound Electrons?

  • Hornbein
  • · Replies 58 ·
2
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58

Graduate Evolution — information increase and entropy

  • artis
  • · Replies 57 ·
2
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57

Graduate Stability and concavity of the entropy function

  • Est120
  • · Replies 3 ·
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3

Undergrad Can Energy Be Measured Directly or Only Through Its Changes?

  • fog37
  • · Replies 6 ·
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6

Graduate Learn Thermodynamics of Material Purification & Entropy for Desalination

  • richard1941
  • · Replies 1 ·
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1

High School The 'all air in a room collecting on one side' adage

  • DaveC426913
  • · Replies 22 ·
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22

High School Melting of Ice: Temperature, Light & Energy

  • NanakiXIII
  • · Replies 1 ·
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1

Undergrad Help with an ideal gas canonical ensemble partition function integral

  • AndreasC
  • · Replies 2 ·
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2

Undergrad Emergence of Complexity and Life

  • madness
  • · Replies 35 ·
2
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35

Undergrad Does Humidity "Disperse" and "Even Out" in Enclosed Space?

  • kyphysics
  • · Replies 8 ·
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8

Undergrad Why Does Smoke Rise? An Exploration of Physics Principles

  • jaumzaum
  • · Replies 3 ·
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3

Undergrad Understanding the concept of energy

  • fog37
  • · Replies 7 ·
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7

High School Energy Harvesting: Calculating kWh from Motorway Traffic

  • PeterC
  • · Replies 4 ·
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4

Graduate Can Heat Transfer Through Conduction Occur at Relativistic Speeds?

  • Josh0768
  • · Replies 2 ·
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2

High School Heating up water versus water with an iron brick

  • weirdoguy
  • · Replies 7 ·
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7

High School If pressure decreases, does temperature then decrease?

  • AttoBlaze
  • · Replies 17 ·
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17

Graduate "Where’s your second law of thermodynamics now?"

  • etotheipi
  • · Replies 13 ·
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13

High School First law of Thermodynamics and energy conservation

  • mcastillo356
  • · Replies 4 ·
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4

Graduate Kelvin-Planck 2nd Law of Thermo & a Syringe Steam Engine

  • Twigg
  • · Replies 26 ·
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26

Undergrad How Does a Thermos Bottle Work?

  • bob012345
  • · Replies 24 ·
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24

Graduate Temperature of a Solar panel in space

  • nithinyes
  • · Replies 9 ·
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9