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Undergrad Calculating Temp. in a Heated Vessel: A Problem for Dave

  • davidgrant23
  • · Replies 1 ·
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1

Graduate Stirling cycle: Why neglect isochoric heat transfers?

  • greypilgrim
  • · Replies 1 ·
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1

Graduate Definition of efficiency of a thermodynamic cycle

  • greypilgrim
  • · Replies 4 ·
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4

Undergrad Why does the Dry Air Gas Constant vary?

  • Robert James Liguori
  • · Replies 6 ·
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6

Undergrad Thermal expansion of liquid into gas void

  • Karlos
  • · Replies 6 ·
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6

Graduate Enthelpy of an ideal gas and pressure

  • fluidistic
  • · Replies 15 ·
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15

Undergrad Coming up with a function to model expected room temperature

  • purpleBlob
  • · Replies 18 ·
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18

Graduate How does the surface property affect blackbody radiation?

  • henry wang
  • · Replies 1 ·
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1

Undergrad References on thermal power stations and supercritical technology

  • GwtBc
  • · Replies 1 ·
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1

Graduate In 3rd step of Carnot cycle, work done on the piston is pdV?

  • goodphy
  • · Replies 18 ·
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18

Graduate Why is entropy a state variable even for irreversible path?

  • goodphy
  • · Replies 2 ·
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2

Graduate Is entropy always bound to increase, even on a small scale?

  • John Morrell
  • · Replies 13 ·
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13

Undergrad Maximizing Solar Heat Output with Vacuum Tubes: A Temperature Comparison

  • pranj5
  • · Replies 22 ·
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22

High School How do I convert kW to kWh for my project involving a heat exchanger?

  • FQVBSina_Jesse
  • · Replies 4 ·
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4

Graduate Particle Velocity and adiabatic/isothermal propagation

  • michaelpos
  • · Replies 1 ·
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1

Graduate Does a probability distribution correctly describe entropy?

  • Charlie313
  • · Replies 4 ·
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4

Undergrad Why do bridges freeze before roads?

  • bluemoonKY
  • · Replies 4 ·
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4

Undergrad Helmholtz Free Energy: Why is F Minimized?

  • Silviu
  • · Replies 4 ·
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4

Graduate What happens at the end of entropy?

  • HolographicBrain
  • · Replies 5 ·
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5

Graduate A question on absolute kelvin temperature scale.

  • MathematicalPhysicist
  • · Replies 15 ·
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15

Graduate Spectral Intensity as a Function of Wavelength in Blackbody Radiation

  • Samama Fahim
  • · Replies 16 ·
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16

Graduate Axisymmetric radiative transfer

  • hilbert2
  • · Replies 0 ·
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0

Undergrad Explain Graphs -- adiabatic Expansion of mono- di- and poly- gas

  • Shreyans Jain
  • · Replies 10 ·
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10

Undergrad Factors that determine the coefficient of linear expansion

  • philip012
  • · Replies 8 ·
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8

Undergrad How Does Internal Energy Affect the Rest Mass of a Clock?

  • FallenApple
  • · Replies 14 ·
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14

Undergrad Why Does Fire Not Travel Backwards in a Gas Hose During Ignition?

  • Lacplesis
  • · Replies 1 ·
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1

Graduate Is the idea of negative absolute temperature analogous to a virtual image?

  • swampwiz
  • · Replies 1 ·
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1

Undergrad Thermodynamics College Project

  • mEnthalpy
  • · Replies 3 ·
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3

Undergrad Temperature ballance, two systems

  • newguy1199
  • · Replies 6 ·
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6

Undergrad Help with light bulb radiation

  • Alvaro8
  • · Replies 1 ·
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1

Graduate Why do atoms undergo fission/fusion instead of emitting radiation?

  • Klupa
  • · Replies 4 ·
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4

Graduate Some Questions about entropy....

  • Arman777
  • · Replies 7 ·
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7

Graduate Critical temperature, or: Is the supercritical liquid a phase?

  • Borek
  • · Replies 12 ·
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12

Undergrad Does Increasing PSI on a Boiler Increase its BHP Output?

  • Gary K
  • · Replies 3 ·
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3

Graduate Can Vacuum-Induced Evaporation Explain the Loss of Water in Comets?

  • aochider
  • · Replies 23 ·
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23

Undergrad Time, Entropy and Change: A Conjecture & Discussion

  • Dennis Plews
  • · Replies 2 ·
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2

Graduate Does entropy increase behind surface tension?

  • larsa
  • · Replies 2 ·
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2

Graduate Entropy: Thermodynamics & Information Theory Explained

  • Jam Smith
  • · Replies 6 ·
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6

Graduate What is the formula 1/(dS/dE)>>0 and how does it apply?

  • Shaun Harlow
  • · Replies 5 ·
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5

Undergrad Designing Cryostats: Finding Heat Input for 50ml/hr Boil Off Rate

  • Kara386
  • · Replies 8 ·
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8

Undergrad Do laws of thermodynamics really apply to ecosystems?

  • Tyto alba
  • · Replies 4 ·
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4

Undergrad Compressibility of liquid vs solid actual numbers

  • fahraynk
  • · Replies 9 ·
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9

Graduate Questions for curious engineers

  • Toaster
  • · Replies 12 ·
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12

Graduate How to Solve Isothermal Incompressible Navier-Stokes for Compressible Fluid?

  • mrBart
  • · Replies 20 ·
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20

Undergrad What Are the Key Concepts and Misconceptions in Thermodynamics?

  • Biker
  • · Replies 6 ·
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6

High School Perpetual Machine: Is It Possible?

  • JakeBnet
  • · Replies 3 ·
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3

Undergrad Skin temperature increase due to radiation absorption

  • fog37
  • · Replies 3 ·
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3

Undergrad Trying to understand the drinking bird toy better

  • Dr_Jekyll
  • · Replies 2 ·
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2

Undergrad How can heat capacity be determined when both pressure and volume are changing?

  • gsyz
  • · Replies 1 ·
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1

Undergrad Thermal velocity of a soccer ball

  • Markus Lervik
  • · Replies 16 ·
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16

Undergrad Help me to solve my house swimming pool temperature problem please

  • Djok1234
  • · Replies 3 ·
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3

Graduate Nitinol Engine Design: Exploring Efficiency and Power Harnessing Techniques

  • AamsterC2
  • · Replies 1 ·
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1

Undergrad Two Questions about thermal radiation....

  • Kaneki123
  • · Replies 2 ·
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2

Undergrad Revisiting Newton's Second Law

  • IWantToLearn
  • · Replies 16 ·
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16

Graduate Definition(s) of "reversible" -- thermodynamics vs mechanical?

  • Stephen Tashi
  • · Replies 2 ·
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2

Graduate Fundamental Thermodynamics Relation

  • Silviu
  • · Replies 1 ·
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1

Graduate Solving the Thermodynamics Paradox with a Ball-Earth System

  • Mausam
  • · Replies 11 ·
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11

Undergrad Qs re average and peak wavelength of Planck distribution

  • Buzz Bloom
  • · Replies 1 ·
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1

Undergrad Contradiction with Kirchhoff's Radiation Law?

  • eat_2_much
  • · Replies 4 ·
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4

Graduate Entropy and temperature question

  • Lacplesis
  • · Replies 4 ·
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4

Graduate Entropy of ideal gas: Volume it *has* or is *allowed* to have?

  • greypilgrim
  • · Replies 3 ·
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3

Graduate Does gravity tend to decrease the entropy?

  • Ilguercino
  • · Replies 6 ·
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6

High School Why Is the Boltzmann Factor Exponential?

  • Glenn G
  • · Replies 1 ·
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1

Graduate Time & Entropy: Deeper Meaning, Equations & References

  • Arman777
  • · Replies 6 ·
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6

Graduate Definition(s) of entropy in continuum mechanics

  • Stephen Tashi
  • · Replies 11 ·
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11

Undergrad Question about converting propane vapor volume to liquid gallons

  • My05stang
  • · Replies 6 ·
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6

Undergrad How to calculate the calories burnt during walking

  • rrcmks
  • · Replies 29 ·
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29

Undergrad Energy needed to decrease or increase entropy?

  • ahmed11
  • · Replies 1 ·
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1

Graduate Entropy change : pure mixing of gases

  • blackdranzer
  • · Replies 4 ·
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4

Graduate Temperature fluctuations in helium

  • Kara386
  • · Replies 2 ·
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2

Undergrad Overall energy input in random vehicle vibration tests

  • Roy1984
  • · Replies 1 ·
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1

Graduate Entropy question in classical physics

  • Glenn G
  • · Replies 1 ·
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1

Undergrad Calculating entropy for a simple scenario

  • zrek
  • · Replies 35 ·
2
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35

Graduate Thermodynamic Process: Is Work Conserved?

  • Ian Baughman
  • · Replies 5 ·
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5

Undergrad General Question about Dissipation of Energy

  • crastinus
  • · Replies 16 ·
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16

Graduate Why is the wave equation different from the heat equation

  • fahraynk
  • · Replies 5 ·
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5

Graduate How Do Microstates, kT, and Entropy Interact in Statistical Mechanics?

  • Glenn G
  • · Replies 4 ·
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4

Undergrad Gas Distribution: Temperature, MFP & More

  • Glenn G
  • · Replies 6 ·
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6

Graduate How can entropy increase in a deterministic universe

  • IvicaPhysics
  • · Replies 35 ·
2
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35

Graduate Does Laplace's demon know about entropy?

  • greypilgrim
  • · Replies 1 ·
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1

Undergrad Where does heat energy go when dissipated in metal?

  • Kyle Gray
  • · Replies 4 ·
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4

Undergrad How do I state 2nd law of thermodynamics for an open system

  • Tyto alba
  • · Replies 6 ·
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6

Graduate Liouville, the second law and chaos

  • haushofer
  • · Replies 8 ·
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8

High School Understanding Mercury and Thermometer: The Science Behind Temperature Expansion

  • gogos
  • · Replies 15 ·
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15

Undergrad A simple question about reversible heat

  • lightarrow
  • · Replies 7 ·
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7

Undergrad Help Understanding Energy in General

  • crastinus
  • · Replies 23 ·
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23

Graduate Boltzmann's constant validity domain

  • jostpuur
  • · Replies 9 ·
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9

Graduate Using Isothermally Compressed Air to Cool a Refrigerator

  • Andy049
  • · Replies 1 ·
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1

Graduate The problematic 1/N in canonical partition function

  • ShayanJ
  • · Replies 6 ·
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6

Graduate Reverse engineering potential and kinetic energy

  • q-ball
  • · Replies 3 ·
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3

Undergrad How Does Temperature Affect the Drying Speed of Dishes?

  • PsychonautQQ
  • · Replies 1 ·
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1

Graduate Lower kinetic temperature implies population inversion?

  • TheCanadian
  • · Replies 6 ·
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6

Undergrad Creating a way to protect a peep inside a vacuum chamber for a demonstration

  • fires21
  • · Replies 12 ·
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12

Graduate Can Temperature Be Misleading in Energy Comparisons?

  • Clara Chung
  • · Replies 3 ·
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3

Undergrad Why Do Volume-Temperature Curves of Ideal Gases Intersect at Absolute Zero?

  • abhinavjeet
  • · Replies 1 ·
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1

Undergrad Ideal Gas Equation: Pressure not Proportional to Moles

  • bluejay27
  • · Replies 4 ·
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4

Undergrad Can Temperature Changes Alter Humidity in a Completely Filled Closed System?

  • G Cooke
  • · Replies 4 ·
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4

Undergrad Cook a Turkey: Time Calculation Equation

  • bluecheez
  • · Replies 8 ·
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8

Undergrad Determining the total energy released by a compost pile

  • AamsterC2
  • · Replies 1 ·
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1

Undergrad Determining the energy released by a flame

  • AamsterC2
  • · Replies 17 ·
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17