Thermodynamics Forum

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High School Why Does a Book on a Table Stay at Rest Despite Action and Reaction Forces?

  • moatasim23
  • · Replies 7 ·
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7

Undergrad What has thermal energy but not heat? (and vice versa)

  • TestTomorrow
  • · Replies 2 ·
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2

Graduate Grand partition function Z of a system

  • sm09
  • · Replies 2 ·
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2

Undergrad Temperature vs Heat: Double the Temp, Double the Heat?

  • Jonnyb42
  • · Replies 2 ·
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2

Undergrad 1st law of thermodynamics./ Conservation of energy.

  • Hopeful101
  • · Replies 16 ·
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16

High School Heat energy and thermal energy

  • DaveC426913
  • · Replies 12 ·
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12

Graduate Radiation Assumptions: Understanding Multipole Moments & λ

  • center o bass
  • · Replies 9 ·
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9

Undergrad Does cold gasoline have less energy

  • jamiek
  • · Replies 11 ·
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11

Undergrad Thermal dynamics - Metals on Engine Components

  • ZCHondaCRX91
  • · Replies 5 ·
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5

Undergrad PV=nRT – Why isn’t ‘T’ inversely proportional to ‘V’?

  • Tweedle Dee
  • · Replies 5 ·
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5

Graduate Room temperature superconductor

  • [darkside]
  • · Replies 9 ·
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9

Graduate Need specific IR thermometer model for experimental physics lab

  • jpestana
  • · Replies 1 ·
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1

Graduate Thermal exchange calculations between water/glycol

  • mwcon
  • · Replies 2 ·
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2

Undergrad Pressure, Volume & Temperature: Investigating the Relationship

  • fonz
  • · Replies 4 ·
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4

Undergrad Adiabatic Expansion - proof of PV^(gamma) = constant

  • CAF123
  • · Replies 1 ·
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1

Undergrad Incandescent bulb heat emission

  • stefanomoret
  • · Replies 15 ·
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15

High School Global temperature anomaly and photosynthesis.

  • charmedbeauty
  • · Replies 1 ·
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1

Undergrad Heat engines: how can we yield work?

  • ikjadoon
  • · Replies 5 ·
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5

Undergrad Water under pressure and temperature effects

  • jamiek
  • · Replies 3 ·
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3

Graduate 'State-of-the-art' in regard to temperatures of atomic cooling

  • Inve
  • · Replies 2 ·
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2

Undergrad The physics of the greenhouse effect.

  • charmedbeauty
  • · Replies 4 ·
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4

Undergrad What is the underlying principle behind Le Chatelier's principle?

  • Miffymycat
  • · Replies 4 ·
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4

Undergrad Question about the destructive interference of radiation.

  • Bararontok
  • · Replies 7 ·
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7

Undergrad Confusion in thermal radiation concepts - infrared, microwave, etc.

  • DragonPetter
  • · Replies 8 ·
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8

Undergrad Intensive gas variables problem

  • cooper607
  • · Replies 2 ·
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2

Undergrad Entropy and the Second Law of Thermodynamics

  • jean28
  • · Replies 7 ·
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7

Graduate Chemical potential vs pressure and temperature; difficulty with Fermi gases

  • jfizzix
  • · Replies 21 ·
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21

Graduate Dirac delta function with contineous set of zeros

  • klabautermann
  • · Replies 1 ·
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1

High School Understanding Temperature in Space: Myth or Reality?

  • jd12345
  • · Replies 4 ·
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4

Graduate Why does liquid co2 goes back to solid at atmospheric press

  • vlajky
  • · Replies 2 ·
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2

Graduate Symmetric matrices and Newton's third law

  • TomServo
  • · Replies 4 ·
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4

Undergrad Combustion Volume vs. Heat Transfer and AM radio

  • Lord_Pi
  • · Replies 1 ·
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1

Undergrad Amount of of heat required for different materials to heat.

  • asdflkjh-0912
  • · Replies 1 ·
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1

High School How Much Heat Energy is Inside the Earth?

  • johann1301
  • · Replies 1 ·
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1

Graduate How to calculate Gibbs energy of formation at a temp T using standard state data?

  • pa5tabear
  • · Replies 2 ·
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2

High School Perpetual motion and Newton's first law

  • physicsYum
  • · Replies 3 ·
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3

Undergrad Temperature Trend: Measure, Accelerate & Analyze!

  • Helena123
  • · Replies 3 ·
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3

Undergrad Need to know what the K stands for in this equation

  • LocalStudent
  • · Replies 6 ·
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6

Undergrad Has the first law of thermo dynamics been broken?

  • aeromike
  • · Replies 1 ·
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1

Undergrad Making sense of Differentiation in Thermodynamics

  • Calcifur
  • · Replies 13 ·
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13

High School Is temperature different at altitude?

  • calgarian
  • · Replies 14 ·
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14

Graduate Cooling that is both Adiabatic and Isochoric - possible?

  • kmarinas86
  • · Replies 6 ·
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6

Graduate Is Evolution Thermodynamically Possible?

  • aleemudasir
  • · Replies 14 ·
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14

Undergrad How much energy does it take to Sink an Island?

  • promeus
  • · Replies 4 ·
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4

Graduate Entropy and Disorder (Crystallization)

  • roam
  • · Replies 15 ·
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15

Graduate What rules, energy or entropy?

  • sugeet
  • · Replies 31 ·
2
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31

Graduate Heat loss through stainless steel tubing

  • ti325v
  • · Replies 6 ·
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6

Graduate Unravelling Heat Transfer: The Mystery of Conduction & Convection

  • permagrin
  • · Replies 4 ·
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4

Graduate Gibbs free energy doesn't increase (constant T and P) - proof doesn't seem right

  • Silversonic
  • · Replies 1 ·
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1

Graduate When is the fundamental thermodynamic relation true?

  • nonequilibrium
  • · Replies 17 ·
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17

Undergrad Condensation on outside of glasses

  • mememe653
  • · Replies 6 ·
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6

Undergrad Varying insulation thicknesses

  • HalcyonStorm
  • · Replies 2 ·
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2

Graduate Adiabatic Free Expansion Question

  • brainpushups
  • · Replies 9 ·
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9

Graduate Can All Heat Be Converted to Work in Isothermal Expansion?

  • Ritz_physics
  • · Replies 3 ·
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3

Graduate Fundamental thermodynamic relation confusion.

  • AntiElephant
  • · Replies 7 ·
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7

High School What factors contribute to the expected temperature of a pool?

  • moonman239
  • · Replies 1 ·
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1

Graduate Evaporation of Bourbon from a Wooden Barrel

  • potus77
  • · Replies 4 ·
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4

Undergrad Effect of temperature on capillary rise

  • Binayak95
  • · Replies 2 ·
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2

Undergrad Anyone knows what this means? Something to do with Thermodynamics?

  • Raziel2701
  • · Replies 3 ·
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3

Undergrad Colder with increasing altitude.

  • chingel
  • · Replies 64 ·
3
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64

High School Defining Thermal Energy: Understanding the Concept and Its Various Forms

  • Taylor_1989
  • · Replies 2 ·
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2

Undergrad How Does Boyle's Law Explain Gas Behavior in a Vacuum?

  • DNMock
  • · Replies 2 ·
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2

Graduate Energy exchange between a bell and a hammer

  • xaratustra
  • · Replies 10 ·
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10

Undergrad Why does ice have a lower specific heat capacity ?

  • elemis
  • · Replies 3 ·
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3

Undergrad Ionization temperature of an atom

  • Boltzmann2012
  • · Replies 6 ·
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6

Graduate Understanding Entropy: Calculations and Examples for Beginners

  • infinitylord
  • · Replies 4 ·
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4

Undergrad Heat capacity, expansion while heating and cooking

  • sgstudent
  • · Replies 1 ·
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1

Undergrad Tungsten vs Lead for Gamma Radiation Protection

  • Eskir
  • · Replies 5 ·
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5

Undergrad Questions about kinetic energy, thermal energy and momentum

  • Xilor
  • · Replies 2 ·
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2

Graduate Momentum Conservation & Kinetic Energy Loss in Perfectly Inelastic Collisions

  • justquestions
  • · Replies 19 ·
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19

Undergrad Heat transfer between 2 mediums

  • sgstudent
  • · Replies 1 ·
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1

Undergrad Thermo Intensive properties and const. vol. compression

  • sidneykidney
  • · Replies 8 ·
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8

High School Is a 100% Efficient Machine Considered a Perpetual Motion Machine?

  • YashaTheBest
  • · Replies 5 ·
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5

Graduate Why is enthelpy a function of Temperature and Pressure?

  • tkdiscoverer
  • · Replies 1 ·
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1

Graduate Does the Rankine Cycle really need a liquid phase?

  • fbs7
  • · Replies 5 ·
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5

Graduate Stopping power of ionizing radiation

  • CloudChamber
  • · Replies 3 ·
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3

Undergrad Has anyone successfully created a power generator using a hot water source?

  • dr1ce
  • · Replies 8 ·
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8

Graduate Numerical on adiabatic expansion

  • naimagul
  • · Replies 2 ·
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2

Undergrad Why does the cavity in a lead sphere increase on heating?

  • hale2bopp
  • · Replies 10 ·
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10

Graduate Average Energy of Grand Canonical Ensemble

  • phys_student1
  • · Replies 1 ·
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1

Undergrad Pressure on heated water tank (rocket)

  • solarblast
  • · Replies 4 ·
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4

Undergrad Is it possible to create a completely sealed room where a door can't be opened?

  • Blue Nuances
  • · Replies 11 ·
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11

High School Inefficient: A/C set @ <78 °F, heater set @ >68 °F

  • Geremia
  • · Replies 13 ·
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13

High School Cosmic Microwave Background Radiation and Photography

  • paddys09
  • · Replies 15 ·
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15

Graduate Carnot engine efficiency * Carnot refrigerator efficiency

  • kmarinas86
  • · Replies 2 ·
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2

Graduate Why are there two Stefan Boltzmann Laws in Reif's book?

  • PatF
  • · Replies 2 ·
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2

Undergrad Can beta radiation be detected in an expansion cloud chamber?

  • CloudChamber
  • · Replies 11 ·
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11

Graduate What Is the Difference Between Triple Point and Melting Point?

  • Paul Snasel
  • · Replies 2 ·
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2

Graduate How does entropy production occur in non-equilibrium chemical processes?

  • nonequilibrium
  • · Replies 3 ·
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3

Undergrad Calculating Heat Loss from an Anaerobic Digester

  • Gorkemakinci
  • · Replies 5 ·
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5

Graduate How quickly does hot air cool in a pipe?

  • margo
  • · Replies 2 ·
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2

High School What make air a good insulator?

  • Taylor_1989
  • · Replies 2 ·
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2

Undergrad Calculating Thermodynamic Values for Different Processes

  • atsum
  • · Replies 2 ·
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2

Undergrad Temperature change with altitude

  • Blem
  • · Replies 2 ·
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2

Graduate Is There a Reactive Force on Radiant Electromagnetic Energy?

  • Philalethes
  • · Replies 5 ·
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5

Undergrad Measuring non-ionizing radiation

  • Great Smoky
  • · Replies 1 ·
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1

Undergrad Help: Radiation suits for NukeReactors

  • towly
  • · Replies 16 ·
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16

Undergrad Thermal Equilibrium - in a microwave?

  • lntz
  • · Replies 3 ·
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3

Undergrad Apparent Discrepancy Between Two Definitions of Newton's First Law

  • Wormaldson
  • · Replies 12 ·
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12

Graduate Recommendation for a Thermodynamics and/or Statistical Mechanics text?

  • wotanub
  • · Replies 4 ·
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4