Thermodynamics Forum

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High School How does infa-red heat things up?

  • quantum123
  • · Replies 7 ·
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7

Undergrad Inrease in water pressure as a function of temperature under constant volume

  • ageorgakis
  • · Replies 4 ·
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4

Graduate What is the definition of a system?What Constitutes a System?

  • Saladsamurai
  • · Replies 11 ·
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11

Undergrad Heat Exchange between Fluids (and similar questions)

  • OsirisGuy
  • · Replies 2 ·
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2

Undergrad Air conditioner thermodynamics

  • n00dle
  • · Replies 3 ·
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3

High School Why does a car continue to run when the engine is turned off?

  • sameeralord
  • · Replies 13 ·
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13

Graduate A question on heat transfer and blackbodys

  • pastro
  • · Replies 1 ·
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1

Graduate Free Thermal Expansion and Stress

  • RohansK
  • · Replies 8 ·
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8

Graduate Gas radiation question - He, H2 vs O2, N2

  • Tandem78
  • · Replies 9 ·
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9

High School Combustion/explosion reactions

  • Infrasound
  • · Replies 5 ·
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5

Undergrad How can I accurately calculate resistive heating for an AC current?

  • chitrageetam
  • · Replies 7 ·
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7

Undergrad I read that vehicles over the last 20 years have increased operating temps by

  • Qaiphyx
  • · Replies 1 ·
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1

Graduate Understanding PDEs and Boundary Conditions for Heat Transfer in Ice Engineering

  • superaznnerd
  • · Replies 7 ·
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7

Graduate Interaction of Radiation with Matter

  • Macedo Junior
  • · Replies 3 ·
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3

Undergrad Understanding Thermionic Diodes: How Do They Work?

  • cragar
  • · Replies 9 ·
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9

Graduate Aerodynamic heating on rocket fins

  • physwil90
  • · Replies 1 ·
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1

Graduate What Does Feynman Describe as a Reversible Machine in His Lectures?

  • dannyevans
  • · Replies 3 ·
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3

Undergrad Lens questions from a software engineer

  • tappo
  • · Replies 4 ·
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4

High School Question about liquid expulsion from a spray bottle

  • LBrandt
  • · Replies 5 ·
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5

Graduate Projected temperature rise of insulated ice block

  • Savage1701
  • · Replies 4 ·
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4

Undergrad What Does the Symbol in the Heat Equation Represent?

  • superaznnerd
  • · Replies 2 ·
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2

Undergrad Diferent kind of energy (heat and kinetic)

  • AlexB2010
  • · Replies 41 ·
2
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41

Graduate Thermal Conductivity, Specific Heat & Human Perception: A Physics Q

  • niccireisnour
  • · Replies 1 ·
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1

Graduate Can Entropy Reveal the Secrets of the Universe? A Search for Einstein's Paper

  • karanmohan
  • · Replies 1 ·
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1

Sensitive quick digital thermometer

  • Haawky
  • · Replies 4 ·
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4

Undergrad Less than 0 kelvin? Meaning of temperature

  • .ultimate
  • · Replies 23 ·
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23

High School Why Did My Milk Bottle Shrink in the Heat?

  • Archosaur
  • · Replies 15 ·
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15

Undergrad Gas Laws Weakness: Moving Plunger In Heats Gas, But Moving Out May Not Cool It

  • Archosaur
  • · Replies 11 ·
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11

Undergrad Perpetual Motion and the Laws of Thermodynamics

  • binbots
  • · Replies 3 ·
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3

Undergrad Energy Consumed Versus Energy Returned

  • deanbo
  • · Replies 12 ·
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12

Undergrad Mixing three water quantities at different temperatures

  • beer_brewer
  • · Replies 4 ·
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4

Graduate Energy transfer due to evanescent fields

  • Karthiksrao
  • · Replies 1 ·
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1

Undergrad Difference between work and heat in thermodynamics

  • EdTheHead
  • · Replies 6 ·
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6

Undergrad Heat transfer at high temperature

  • Gavroy
  • · Replies 5 ·
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5

Undergrad How Long Must Water Stay Underground in PEX Pipe for Geothermal Cooling?

  • aarothepharo
  • · Replies 7 ·
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7

Undergrad If there was steal between earth and the sun instead of a vacuum

  • marsh8472
  • · Replies 8 ·
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8

Graduate According to Thermodynamics Everything should Pop into Existence?

  • nonequilibrium
  • · Replies 6 ·
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6

Undergrad Calculate Welding Heat Input per Point

  • chandran
  • · Replies 6 ·
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6

Graduate Isn't this spooky variable a problem?

  • nonequilibrium
  • · Replies 1 ·
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1

Undergrad Why doesn't infrared radiation travel through glass

  • LostConjugate
  • · Replies 24 ·
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24

Undergrad Can I Calculate Engine Speed from Sound Frequency Inside an Airplane?

  • glennpagano
  • · Replies 9 ·
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9

Undergrad Build a Home Desalination Plant for Power

  • berry05
  • · Replies 11 ·
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11

Undergrad Adiabatic compression at a constant rate

  • Darvaz
  • · Replies 6 ·
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6

Graduate Nusselt for vertical cylinder with free convection

  • da_willem
  • · Replies 6 ·
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6

Undergrad SWL to secure engine onto a flatbed trailer

  • porkypete51
  • · Replies 2 ·
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2

Graduate How Do You Calculate Cooking Intensity from Cooling in an Oven Cycle?

  • Bacat
  • · Replies 3 ·
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3

Graduate Complex Thermo-Dynamic System of Equations

  • FriedSushi87
  • · Replies 2 ·
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2

Graduate What is the mean molecular speed of Mercury Vapor at room temperature?

  • Buzzworks
  • · Replies 1 ·
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1

Graduate What is the connection between detailed balance and thermodynamic equilibrium?

  • M.B.
  • · Replies 1 ·
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1

Undergrad Air in Mercury & Sprengel Pump Explained

  • cragar
  • · Replies 3 ·
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3

Undergrad Confusion on Source of EM Radiation? (segment Serway)

  • nonequilibrium
  • · Replies 2 ·
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2

High School Confused about Newton's third law again?(Doc Al and others help)

  • sameeralord
  • · Replies 10 ·
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10

Undergrad Euler's First Law and the Conservation of Momentum

  • e2m2a
  • · Replies 1 ·
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1

Graduate Kirchhoff's second law and inductor's field

  • DaTario
  • · Replies 19 ·
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19

Undergrad When a meteoroid enters the atmosphere

  • yasar1967
  • · Replies 5 ·
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5

Undergrad Can adiabatic process be isothermal?

  • pinsky
  • · Replies 41 ·
2
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41

Graduate Does Optic Focusing Contradict the Second Law of Thermodynamics?

  • the4thamigo_uk
  • · Replies 56 ·
2
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Graduate The fundamental thermodynamic relation

  • Andrew Davies
  • · Replies 8 ·
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8

High School Wikipedia's defintion of the joule is confusing me

  • Norseman
  • · Replies 10 ·
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10

Graduate Can Maxwell's equations alone explain the momentum of EM radiation?

  • snoopies622
  • · Replies 25 ·
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25

Graduate Understanding Far Field Radiation of Hertzian Dipoles in Relation to Orientation

  • ronaldoshaky
  • · Replies 1 ·
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1

Graduate Reflection and radiation pressure.

  • Repetit
  • · Replies 9 ·
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9

Graduate What is Feynman saying here? (entropy)

  • nonequilibrium
  • · Replies 6 ·
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6

Graduate Explaining (ir)reversibility with S.M.

  • nonequilibrium
  • · Replies 2 ·
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2

Graduate A question about the phase of pump wave of a dipole and radiation of the dipole

  • majunge000
  • · Replies 1 ·
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1

Graduate Radiation pressure - classical description

  • dan_b_
  • · Replies 2 ·
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2

Graduate Terahertz radiation converted into heat

  • jgrant333
  • · Replies 4 ·
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4

Undergrad Flame temperature based on colour

  • richard_z
  • · Replies 2 ·
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2

Undergrad Clarification on 1st law of thermodynamics and e=mc^2

  • Null_
  • · Replies 17 ·
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17

Undergrad Why Isn't Wind Hot Despite Its Motion?

  • Vadermort
  • · Replies 26 ·
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26

Graduate Molar specific heat capacities for gases

  • saubhik
  • · Replies 1 ·
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1

High School Energy required per day for survival by an individual

  • n.karthick
  • · Replies 2 ·
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2

Undergrad Object’s speed and its heating temperature

  • Eagle9
  • · Replies 8 ·
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8

Graduate Derivation of the Boltzmann constant

  • Hellabyte
  • · Replies 10 ·
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10

Undergrad Why Do Molecules Move Above Absolute Zero?

  • ConnorD
  • · Replies 19 ·
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19

High School If energy is never lost where is it?

  • Cheesus128
  • · Replies 4 ·
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4

Graduate Change in Free Energy in terms of First Law

  • jbunten
  • · Replies 11 ·
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11

Undergrad What Do Wave Crests in Electromagnetic Radiation Represent?

  • land_of_ice
  • · Replies 2 ·
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2

Undergrad Quick question about Microwave radiation

  • ScholarTron
  • · Replies 3 ·
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3

Graduate Laws Of Thermodynamics (Pre-university)

  • saubhik
  • · Replies 1 ·
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1

Graduate Solving Enthalpy for Ideal Gas: Finding H as a Function of S and P

  • quantoshake11
  • · Replies 2 ·
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2

Undergrad Difference between enthelpy and internal energy

  • Taturana
  • · Replies 6 ·
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6

Undergrad What are the unknown variables in the flowrate equation?

  • Scott Vidicik
  • · Replies 3 ·
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3

Undergrad N2 gas temperature change by different compression/expansion speeds

  • hyeonje
  • · Replies 2 ·
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2

Graduate Loss of heat from magma of Earth

  • Tan PK
  • · Replies 9 ·
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9

High School What is the Greenhouse Effect and How Does it Impact Our Planet?

  • kashiark
  • · Replies 8 ·
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8

How to reach 2,000 Fº at home?

  • eduardojgg91
  • · Replies 3 ·
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3

Undergrad Thermodynamic Properties of a Gas

  • chhitiz
  • · Replies 2 ·
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2

Undergrad How Does Rapid Compression Affect Gas Pressure and Temperature?

  • beginner49
  • · Replies 3 ·
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3

Graduate Development of 2nd Law Of Thermodynamics

  • wcg1989
  • · Replies 113 ·
4
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113

Undergrad Coefficient of static friction in a 3D Games Engine

  • Danilov22
  • · Replies 5 ·
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5

Graduate Negative temperature and the amazing power of SM

  • nonequilibrium
  • · Replies 11 ·
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11

Graduate An old theory of mine was scientifically proven recently

  • gaming_addict
  • · Replies 7 ·
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7

High School How Does Heat Conversion Differ from Magnetic Energy Conversion?

  • CuriousGorge
  • · Replies 3 ·
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3

Undergrad Does Revving Closer to Peak Power Improve Fuel Efficiency in Motorcycles?

  • Spikeywan
  • · Replies 41 ·
2
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41

Graduate Thermodynamics and the Arrow of Time

  • GleefulNihilism
  • · Replies 11 ·
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11

Undergrad 60-cycle vibration from heating pad?

  • neomsgs
  • · Replies 3 ·
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3

Undergrad Can Air Be Compressed Without a Container?

  • Becourbin
  • · Replies 1 ·
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1

Undergrad Calculating heat loss by evaporation (water)

  • NickTrollope
  • · Replies 2 ·
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2

Undergrad Oxygen-Free Oven: Effects on Objects & Chemicals

  • Yaaaldi
  • · Replies 8 ·
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8