Thermodynamics Forum

Post thread

Threads

Graduate The rate of evaporation at high temperatures

  • UOP Student
  • · Replies 2 ·
Replies
2

High School Effect of a Vacuum on Liquid Boiling Point

  • Beaujolais
  • · Replies 1 ·
Replies
1

Undergrad Gravity creates energy Violation of the first law of thermodynamics?

  • Chuck St. Lou
  • · Replies 9 ·
Replies
9

Undergrad Heat loss through an open door

  • James Allsopp
  • · Replies 3 ·
Replies
3

Graduate Thermo: how should enthelpy change during cooling/heating?

  • bumblebee77
  • · Replies 8 ·
Replies
8

Undergrad Active IR vs. Passive Thermal Imaging

  • pegasusherd
  • · Replies 3 ·
Replies
3

Undergrad Combining Differently-Tempered Gases: Calculating Internal Energy Change

  • winstonsmith
  • · Replies 3 ·
Replies
3

Undergrad Variation of liquid density with temperature

  • proinwv
  • · Replies 4 ·
Replies
4

Undergrad Sudden change in thermodynamic system.

  • Aristarchus0
  • · Replies 2 ·
Replies
2

High School Isothermal means constant temperture process

  • pivoxa15
  • · Replies 15 ·
Replies
15

Graduate How Can I Accurately Determine Pressure at Vena Contracta to Prevent Cavitation?

  • KristianCE
  • · Replies 1 ·
Replies
1

Undergrad Heat Removal from Ice: How Much Energy?

  • Savage1701
  • · Replies 2 ·
Replies
2

Graduate Ideal gas in the microcanonical ensemble - a subtle point?

  • FranzDiCoccio
  • · Replies 14 ·
Replies
14

Graduate How is the 2nd law of thermodynamics related to the uncertainty principle?

  • quantumkiko
  • · Replies 5 ·
Replies
5

High School What is absolute reference pressure and absolute reference temperature

  • Su Solberg
  • · Replies 2 ·
Replies
2

Undergrad How Can I Calculate the Outside Temperature of a Heated Pipe?

  • bill nye scienceguy!
  • · Replies 2 ·
Replies
2

Undergrad Heat dissipation - nylon vs steel

  • RagenStienke
  • · Replies 7 ·
Replies
7

Undergrad Aerogel wallpaper versus air-pocketed wallpaper

  • Twinbee
  • · Replies 8 ·
Replies
8

Graduate Hertzian Dipole Antenna Radiation : The Whole Story

  • barton
  • · Replies 3 ·
Replies
3

Graduate Derivation of the Boltzmann Distribution

  • Peter Forbes
  • · Replies 2 ·
Replies
2

Undergrad EMFs, Battery & Resistor: Heat, Work & Energy Loss

  • atavistic
  • · Replies 1 ·
Replies
1

High School Alternative Cooling: Use Energy to Lose Energy?

  • Andrew Buren
  • · Replies 1 ·
Replies
1

Graduate Reversible, equilibrium and quasi-static

  • KFC
  • · Replies 4 ·
Replies
4

Graduate Gravity vs. Entropy: Examining Formation of a Star & 2nd Law of Thermodynamics

  • Magical
  • · Replies 19 ·
Replies
19

Undergrad Soundvelocity dependence on temperature?

  • JANm
  • · Replies 11 ·
Replies
11

Undergrad Unravelling the Mystery of Free Energy

  • colin9876
  • · Replies 95 ·
4
Replies
95

Undergrad Erenkov radiation: Why is it possible?

  • Hunterbender
  • · Replies 2 ·
Replies
2

High School How does Newton's third law apply to objects falling at different rates?

  • Brin
  • · Replies 13 ·
Replies
13

Graduate Thermodynamics of wire calculation

  • TLewis
  • · Replies 4 ·
Replies
4

Undergrad Heat from radiation, why high v doesn't heat stuff?

  • DeepSeeded
  • · Replies 3 ·
Replies
3

Graduate Calculation of temperature drop after a pressure release

  • lari
  • · Replies 3 ·
Replies
3

Undergrad Convert Units for Thermodynamics Calculations?

  • KFC
  • · Replies 9 ·
Replies
9

Graduate How Does the Entropy Change During Adiabatic Mixing of Two Gases?

  • KFC
  • · Replies 2 ·
Replies
2

Graduate Deriving Entropy Formula: Thermo Solution

  • olechka722
  • · Replies 3 ·
Replies
3

Undergrad Why Do Treadmill Calorie Counters Vary with Speed?

  • pushkarvaidya
  • · Replies 1 ·
Replies
1

Undergrad Horsepower in relation to cfm, engine displacement, and a few others

  • x2percentmilk
  • · Replies 2 ·
Replies
2

Graduate Thermocouple-Heat pump-Power plant?

  • Asok_Green
  • · Replies 5 ·
Replies
5

Graduate Calculate Latent Heat: L = (S_after - S_before)T

  • KFC
  • · Replies 1 ·
Replies
1

Graduate Using Constant-Volume Specific Heat for Calculating Change of Internal Energy?

  • KFC
  • · Replies 2 ·
Replies
2

Graduate Entropy of blackbody radiation

  • learningphysics
  • · Replies 4 ·
Replies
4

Undergrad Heat, fire, pressure - things i don't understand

  • fudoki
  • · Replies 2 ·
Replies
2

Undergrad Heating compressed air to provide lift

  • dankelly08
  • · Replies 3 ·
Replies
3

Graduate Uncovering the Mystery of Gravitational Entropy in Earth Science

  • Mammo
  • · Replies 7 ·
Replies
7

High School What is heat transfer coefficient

  • Su Solberg
  • · Replies 3 ·
Replies
3

Undergrad [thermodynamics] simple question + view of temperature?

  • nonequilibrium
  • · Replies 7 ·
Replies
7

High School Wind Chill Factor: Definition, Measurement & Impact

  • p.tryon
  • · Replies 5 ·
Replies
5

High School Why do batteries loose omph when it gets cold?

  • TSN79
  • · Replies 1 ·
Replies
1

Undergrad [Thermodynamics] Doubt about the relation between internal and external work

  • valleyman
  • · Replies 7 ·
Replies
7

Undergrad Calculate Air Temperature During Compression - TurboFast

  • silver123
  • · Replies 3 ·
Replies
3

Undergrad Change of entropy in a resistor

  • KFC
  • · Replies 4 ·
Replies
4

Graduate Can Intelligence Defy Entropy in a Closed System?

  • Gear300
  • · Replies 6 ·
Replies
6

Undergrad Energy is neother created nor lost? How about E=mc^2

  • matttan
  • · Replies 14 ·
Replies
14

Undergrad What is the Efficiency of a Carnot Refrigerator?

  • KFC
  • · Replies 5 ·
Replies
5

Graduate Something > Carnot efficiency ? WTF?

  • ironizer
  • · Replies 11 ·
Replies
11

Undergrad A practical question about thermodynamics

  • KFC
  • · Replies 4 ·
Replies
4

High School Energy req'd to compress a gas?

  • ProtoBob
  • · Replies 4 ·
Replies
4

High School In the universe, without a heat source does it take energy to cool?

  • Simon.007
  • · Replies 7 ·
Replies
7

Undergrad Energy consumed to create force

  • Bob Smith
  • · Replies 8 ·
Replies
8

Graduate Cannot Concentrate Blackbody Radiation

  • Warner
  • · Replies 13 ·
Replies
13

Graduate Net Radiation b/w Two Spheres: 1069.3 Watts

  • philrainey
  • · Replies 5 ·
Replies
5

Undergrad What Causes Heat Transfer? Understanding the Forces Behind Thermal Equilibrium

  • Broodle
  • · Replies 10 ·
Replies
10

Undergrad Entropy Changes in Reversible Engines: Is the Total Change Always Zero?

  • KFC
  • · Replies 7 ·
Replies
7

Graduate Does the 2nd law of thermodynamics need to be postulated?

  • Bobhawke
  • · Replies 9 ·
Replies
9

Graduate 2nd Law of Thermodynamics question

  • Crazy Tosser
  • · Replies 2 ·
Replies
2

Undergrad Here is a Theoretical Question I have been pondering

  • mightyhealthy
  • · Replies 4 ·
Replies
4

Undergrad Compressed gas and heat transfer

  • ProtoBob
  • · Replies 1 ·
Replies
1

Undergrad Heat Transfer black-body cube Problem

  • Marc Briancon
  • · Replies 2 ·
Replies
2

Undergrad How much energy to heat a room, and heat pump efficiency?

  • ProtoBob
  • · Replies 3 ·
Replies
3

Graduate Is a radiation heat pump possible

  • philrainey
  • · Replies 19 ·
Replies
19

Graduate Max Entropy: Second Law of Thermodynamics & Its Effects

  • kky
  • · Replies 3 ·
Replies
3

Undergrad Applying a heat-resistant mark to ceramic

  • m.e.t.a.
  • · Replies 7 ·
Replies
7

Graduate Harmonic oscillator in a heat bath

  • jostpuur
  • · Replies 4 ·
Replies
4

Graduate Newton's Second Law and Inertial Frames Of Refence

  • cwstrick
  • · Replies 1 ·
Replies
1

Undergrad What is the significance of high-speed gas particles in Earth's atmosphere?

  • Elfrae
  • · Replies 4 ·
Replies
4

Undergrad How Do Scientists Measure Extreme Temperatures in Various Environments?

  • helloween0908
  • · Replies 1 ·
Replies
1

Graduate Entropic degradation of the earth

  • wdednam
  • · Replies 23 ·
Replies
23

High School Debunking the Tire PSI Debate: Ground vs. Lifted Weight Impact

  • waca
  • · Replies 9 ·
Replies
9

High School What Are the Causes of Global Warming and Its Impact on Our Air Supply?

  • burnit
  • · Replies 3 ·
Replies
3

High School Can Extreme Cold Cause Burns Similar to Heat?

  • Nick89
  • · Replies 6 ·
Replies
6

Undergrad Clarification About Waste Heat

  • DaleSwanson
  • · Replies 4 ·
Replies
4

Undergrad Amount of Energy Required to Cool the Intake Air

  • ¡MR.AWESOME!
  • · Replies 4 ·
Replies
4

Undergrad Pulling or pushing a piston slowly - Heat transferred?

  • MechRocket
  • · Replies 2 ·
Replies
2

Undergrad Saturated Steam Tables - General Question

  • vector2
  • · Replies 1 ·
Replies
1

Undergrad Why do you feel warmer in a dark T shirt on a hot day than a white T shirt?

  • p.tryon
  • · Replies 8 ·
Replies
8

Graduate Equivalence of Boltzmann and Clausius entropy

  • Bobhawke
  • · Replies 1 ·
Replies
1

Undergrad Heat energy transmitted from Lightbulbs

  • johnl
  • · Replies 3 ·
Replies
3

Undergrad Pitch of Organ Pipes: Room Temp Effects

  • brandi_72786
  • · Replies 1 ·
Replies
1

High School Does Adding Bubble Bath Affect Water Temperature?

  • wolram
  • · Replies 1 ·
Replies
1

Oil Heater, Humididy, Heating Cold Air

  • justmehere
  • · Replies 5 ·
Replies
5

Graduate Absolute Entropy in an isolated gas

  • Austin0
  • · Replies 6 ·
Replies
6

Graduate Arrow of Time? I don't understand.

  • MonstersFromTheId
  • · Replies 34 ·
2
Replies
34

High School Calculating temperature change

  • Micko
  • · Replies 2 ·
Replies
2

High School Why does beer freeze when opened in hot temperatures?

  • reinaldo
  • · Replies 9 ·
Replies
9

Undergrad Understanding He Closed Cycle Cryos and Vibration Damping

  • Rajini
  • · Replies 3 ·
Replies
3

Graduate Heat equation with const. heat source

  • Franck
  • · Replies 21 ·
Replies
21

Undergrad Can Non-Metallic Triggers Be Used in Sodium Acetate Heat Packs?

  • mike_nel85
  • · Replies 1 ·
Replies
1

Undergrad Home Made Pool Heater: Calculate Heating Time & Coal Use

  • Mike.
  • · Replies 8 ·
Replies
8

Graduate Model for Sudden Decompression of Ideal Gas in Box

  • intervoxel
  • · Replies 3 ·
Replies
3

Graduate Dissipation due to heat conduction

  • pere.balazs
  • · Replies 1 ·
Replies
1

Undergrad Question about change in entropy of a compound

  • nuby
  • · Replies 1 ·
Replies
1