Thermodynamics Forum

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High School Cooling the human body with fans.

  • Bhima
  • · Replies 2 ·
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2

High School Organic matter in absolute zero?

  • geft
  • · Replies 1 ·
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1

Undergrad Specific Heat Capacity: Mass, Temp, Time Factors

  • laxgaels17
  • · Replies 2 ·
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2

Graduate Planck's Radiation Law and Stefan's Law

  • manofphysics
  • · Replies 1 ·
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1

Graduate Thermodynamics and the JFK Assassination

  • Andrew Mason
  • · Replies 13 ·
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13

High School Davy's Safety Lamp: How Does it Get Oxygen to Burn in Coal Mines?

  • 1/2"
  • · Replies 3 ·
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3

High School Radiant Heat Energy: Why is Hand Protected Behind Glass?

  • westdivo
  • · Replies 3 ·
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3

Graduate Energy loss in compressible flow

  • kayjaygee_13
  • · Replies 2 ·
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2

Undergrad Stefan's Radiation Law with Boxes

  • Fireworks
  • · Replies 1 ·
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1

Undergrad The Meaning of the Ideal Gas Equation: Vdp + pdV = 0

  • quietrain
  • · Replies 6 ·
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6

Undergrad Entropy to never decrease in an isolated system

  • venomxx
  • · Replies 2 ·
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2

Undergrad Radiation heat transfer between air or wall

  • zenite
  • · Replies 6 ·
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6

Graduate How Does Induction Heating Work and What Factors Affect Its Efficiency?

  • infoseeker39
  • · Replies 1 ·
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1

High School Heat Container: 20cm - Time Required

  • anvesh111
  • · Replies 1 ·
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1

High School How to prove the Newton's third law.

  • IPhO' 2008
  • · Replies 7 ·
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7

Graduate Expansion/Contraction Energy from Temperature Difference

  • KevinK
  • · Replies 3 ·
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3

High School How is the freezer part of a refrigerator is more cooler than the other parts?

  • pras_quantum
  • · Replies 1 ·
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1

Undergrad Geothermal power entering atmosphere?

  • jschmidt
  • · Replies 4 ·
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4

Graduate Thermal imaging and radiometry

  • ArthurReader
  • · Replies 1 ·
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1

Undergrad Can Gasoline Vapor in Sewers Lead to Explosions?

  • Arjan.
  • · Replies 1 ·
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1

Undergrad Are Stages 2-3 and 1-4 in the OTTO Cycle Adiabatic?

  • JakePearson
  • · Replies 2 ·
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2

Can Barbra Streisand Dummies Prevent Bird Strikes on Airplanes?

  • T.O.E Dream
  • · Replies 11 ·
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11

Undergrad Physics/Chem: Dry Ice Expanding at 1 ATM - Push?

  • microfracture
  • · Replies 12 ·
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12

High School Newton's Third Law: Why Is There Motion?

  • lewis198
  • · Replies 4 ·
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4

Undergrad Combined gas law vs. adiabatic relations

  • gothamxi
  • · Replies 5 ·
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5

Graduate Adiabatic process-how is internal energy mcv(t2-t1)

  • sreeram
  • · Replies 8 ·
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8

Graduate Vapour Liquid Equilibrium for a two component mixture.

  • dharavsolanki
  • · Replies 1 ·
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1

High School Question on Third law of motion.

  • yaseen shah
  • · Replies 1 ·
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1

Graduate Understanding \DeltaH and \DeltaE in Constant Volume Process

  • phymatter
  • · Replies 8 ·
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8

Undergrad Using Solenoids to Create an Automobile Engine: Patents & Possibilities

  • jmsapinoso
  • · Replies 1 ·
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1

Undergrad What is the true definition of entropy?

  • muzialis
  • · Replies 22 ·
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22

High School Does the piston ever stop moving in a running engine?

  • evans71
  • · Replies 33 ·
2
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33

Graduate Temperature Gradients of Independent Radiating Bodies within A Mixture.

  • Kmenex
  • · Replies 3 ·
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3

Undergrad Learning source for Thermodynamic

  • soonsoon88
  • · Replies 5 ·
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5

Graduate What Causes Red-Hot Materials to Emit Electromagnetic Radiation?

  • Infrasound
  • · Replies 11 ·
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11

High School Why is infrared called the heat signature?

  • justinpod
  • · Replies 3 ·
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3

Graduate Need light with less heat for microscope

  • AmeliaSkates
  • · Replies 3 ·
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3

Undergrad Emission of infra red from hot bodies

  • DGriffiths
  • · Replies 5 ·
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5

High School Iron vs Water: What Causes Temperature Change?

  • DanielOlsson
  • · Replies 1 ·
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1

Undergrad Formula to calculate the engine inertia

  • blade9265rr
  • · Replies 11 ·
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11

Graduate How Do You Prove Key Thermodynamic Identities?

  • thekenw
  • · Replies 1 ·
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1

Graduate Vibrational Decay: Explaining Heat Radiation In Space

  • gonegahgah
  • · Replies 13 ·
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13

Undergrad Can you calculate energy required to maintain heating element?

  • tsx387
  • · Replies 1 ·
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1

Graduate Atmospheric radiation scattering/absorption

  • lurksalot
  • · Replies 1 ·
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1

Graduate Thermodynamic Limit: V/N = $\upsilon_0$ $\neq$ 0

  • Petar Mali
  • · Replies 4 ·
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4

Graduate White noise vs Black body radiation

  • xfshi2000
  • · Replies 1 ·
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1

Undergrad The Van Allen Radiation Belt and Space Travel

  • BayernBlues
  • · Replies 5 ·
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5

Undergrad Quick Question- carnot efficiency

  • trelek2
  • · Replies 2 ·
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2

Graduate Gas considered as lots of molecules

  • WiFO215
  • · Replies 31 ·
2
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31

Undergrad Can Temperature Ever Reach Absolute Zero?

  • delplace
  • · Replies 27 ·
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27

Undergrad How to obtain temperature from a PV vs P diagram using ideal gas law?

  • trelek2
  • · Replies 7 ·
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7

Graduate Is it possible for maximum entropy to decrease?

  • zeromodz
  • · Replies 3 ·
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3

Graduate Is this interpretation of 2nd law of Thermodynamics correct?

  • superkan619
  • · Replies 8 ·
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8

Graduate Hypothetical cyclic process- does it violate the thermodynamic laws?

  • trelek2
  • · Replies 5 ·
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5

Undergrad Physics behind making fire: The ancient way

  • gaki
  • · Replies 1 ·
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1

High School Question: Evaporation - beyond boiling point

  • greedangerfoolishego
  • · Replies 12 ·
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12

Undergrad How Does a Vacuum Influence Water Evaporation Rates at 322K?

  • Telruc
  • · Replies 2 ·
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2

Undergrad Efficiency with a combustion engine

  • sciencectn
  • · Replies 20 ·
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20

Graduate Conflicting definitions of temperature?

  • nomadreid
  • · Replies 54 ·
2
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54

Graduate Foundations: Newton's Third Law and time reversal invariance

  • Cleonis
  • · Replies 31 ·
2
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31

Undergrad Thermal conductivity of metals

  • Niles
  • · Replies 3 ·
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3

Undergrad Heat loss of a steel steam pipe

  • Batman318
  • · Replies 4 ·
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4

High School Cocktail Shaker: Ice Melting Explained

  • wavingerwin
  • · Replies 1 ·
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1

Undergrad Total entropy change does not depend on the mass of water?

  • yellowputty
  • · Replies 1 ·
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1

Undergrad Stupid question about Newton's third law

  • bluesurge863
  • · Replies 7 ·
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7

Undergrad What Are Thermal Photons and How Do They Transfer Heat?

  • trini
  • · Replies 1 ·
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1

Graduate Entropy increase in dissipative systems

  • Bob S
  • · Replies 1 ·
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1

Graduate Blackholes and 2nd Law of Thermodynamics

  • JustinLevy
  • · Replies 3 ·
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3

Undergrad Energy stored when compressing a gas

  • BasketDaN
  • · Replies 9 ·
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9

Undergrad Thermal Resistivity: Is Zero Equal to Infinity?

  • Niles
  • · Replies 1 ·
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1

Graduate Power Plant PLF: Can 109-110% be Achieved?

  • altehexe
  • · Replies 5 ·
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5

High School Infrared Waves & Radiating Heat: Investigating the Connection

  • Jules18
  • · Replies 3 ·
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3

High School Problems and solutions about thermodynamics

  • pmehnati
  • · Replies 2 ·
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2

Graduate Artificial Black Hole and entropia

  • ocunue
  • · Replies 1 ·
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1

Graduate 2. law of thermodynamics wrong afterall?

  • DrZoidberg
  • · Replies 18 ·
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18

Undergrad Answer Entropy: How Does Water Absorption by Paper Towels Work?

  • espen180
  • · Replies 3 ·
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3

High School Can salty sea water create heat in a simple reaction ?

  • sonnyco
  • · Replies 4 ·
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4

Undergrad Is white surface a good radiation emitter?

  • tkm2002
  • · Replies 3 ·
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3

Undergrad Enthelpy (H=U+PV) What is P, really?

  • InTuoVultu
  • · Replies 5 ·
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5

Undergrad The Force of Wind and the Debate on Heat, Energy, and Mass

  • brandy
  • · Replies 4 ·
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4

Undergrad Work in Heat Engines and Refrigerators: Positive or Negative?

  • lowg
  • · Replies 2 ·
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2

High School Simple way to measure thermal conductivity

  • Maiapa
  • · Replies 17 ·
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17

Undergrad Energy savings lamp produce heat so what?

  • Gerenuk
  • · Replies 19 ·
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19

Undergrad Does Aluminum Foil Really Prevent Burning on a Turkey in the Oven?

  • cepheid
  • · Replies 1 ·
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1

Graduate How Can Air Expansion Help Lift Humans Off the Ground?

  • univeruser
  • · Replies 28 ·
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28

Graduate Thermodynamics, Heat Transfer, differential equals

  • al3ko
  • · Replies 2 ·
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2

Graduate The average and variance of distributions (thermodynamics)

  • pitch-black
  • · Replies 2 ·
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2

Graduate Is conservation laws are more fundamental than Newton's second law?

  • charlespune
  • · Replies 8 ·
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8

Undergrad Energy lost from Wind Turbines

  • Hunterbender
  • · Replies 2 ·
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2

Undergrad How Can Calibration Improve Accuracy in Heat Experiments?

  • Jack B.
  • · Replies 1 ·
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1

Undergrad What is the physics behind Ash to forming?

  • piareround
  • · Replies 1 ·
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1

High School Newton's third law and air resitance?

  • sameeralord
  • · Replies 21 ·
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21

Graduate What Do Helmholtz and Gibbs Free Energy Mean in Thermodynamics?

  • quantasham
  • · Replies 1 ·
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1

High School Why does the temperature goes up following rainfall (then gradually cools down)?

  • srk999
  • · Replies 2 ·
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2

Graduate Free expansion of an ideal gas.

  • scorpion990
  • · Replies 4 ·
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4

Undergrad How Can I Calculate the PSI Needed to Compress Air to 100°C?

  • matthewgill
  • · Replies 4 ·
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4

Undergrad Some confusion between radiation and conduction

  • klng
  • · Replies 4 ·
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4

Undergrad Calculating Motor Engine torque/power using accelerometer data

  • FFog
  • · Replies 7 ·
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7

High School Can Insulation and Heat Reflective Materials Work Together for Fire Safety?

  • stewme
  • · Replies 1 ·
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1

Graduate Average total energy of 3D harmonic oscillator in thermal equilibrium

  • yxgao
  • · Replies 15 ·
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15