Thermodynamics Forum

Post thread
Undergrad What happens when water is heated above its critical temperature?
  • · Replies 3 ·
Replies
3
Views
4K
Undergrad Dew Point Temp: Does it Change with Altitude, Pressure & Density?
  • · Replies 5 ·
Replies
5
Views
12K
High School Time & Temperature: Any Connection?
  • · Replies 12 ·
Replies
12
Views
11K
Undergrad What is the connection between creativity and entropy
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Relative intensity changing with temperature?
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Here is the roulette cheat cookbook (Fake?)
  • · Replies 8 ·
Replies
8
Views
7K
Undergrad The physics behind air/fuel ratios in 4-stroke engines.
  • · Replies 9 ·
Replies
9
Views
7K
Graduate Slow variables in thermodynamics
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Is Energy Transfer via Electromagnetic Radiation Considered a Heat Process?
  • · Replies 2 ·
Replies
2
Views
5K
Undergrad Energy efficiency and home insulation
  • · Replies 6 ·
Replies
6
Views
3K
Undergrad Formula for mixing liquids of different temperatures?
  • · Replies 4 ·
Replies
4
Views
11K
High School Cooling a room with A/C (w or w/o a fan)
  • · Replies 3 ·
Replies
3
Views
4K
Undergrad What Material Should I Use for a Dry Ice Container in a DIY Portable AC?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Sweating on Line: High vs Low Pressure
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Temperature measured from Wien's Displacement law
  • · Replies 10 ·
Replies
10
Views
4K
Graduate Help to understand fast adiabatic expansion
  • · Replies 2 ·
Replies
2
Views
4K
Undergrad Why is air not the best insulation for homes?
  • · Replies 6 ·
Replies
6
Views
5K
Undergrad Why does the area of a piston have no effect on its settling height?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Will Compression Affect Temperature and Resonance Frequencies?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Calling Math & Physics Runners: Take a Look at the SM Model!
  • · Replies 1 ·
Replies
1
Views
6K
Graduate Is It Possible to Generate Energy with a Microscopic Gate Sorting Molecules?
  • · Replies 1 ·
Replies
1
Views
2K
High School Can you sort molecules by speed based on temperature?
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad A question on wave nature of EM radiation
  • · Replies 3 ·
Replies
3
Views
2K
High School Solar cell Efficiency & thermal ?
  • · Replies 4 ·
Replies
4
Views
4K
Graduate Finding the heat transferred in an ininitesimal quasistatic process
  • · Replies 1 ·
Replies
1
Views
3K
High School Can Entropy Explain the Cold Temperatures of Outer Space?
  • · Replies 10 ·
Replies
10
Views
4K
High School Cooling Air with Fans: Explained
  • · Replies 6 ·
Replies
6
Views
8K
Undergrad Air Track Experiment: Explaining the Velocity Increase
  • · Replies 7 ·
Replies
7
Views
4K
Graduate Detecting the existence of a sound that has been lost in thermal noise
  • · Replies 17 ·
Replies
17
Views
5K
Undergrad Why Is Your Tent Wet in the Morning?
  • · Replies 13 ·
Replies
13
Views
9K
Graduate Rotary air compressor and vortex tubes questions?
  • · Replies 3 ·
Replies
3
Views
6K
  • Poll Poll
High School Can Holding a Teacup Make Tea Cool Faster?
  • · Replies 7 ·
Replies
7
Views
4K
Undergrad Idea that EM radiation propagates through space in straight lines
  • · Replies 10 ·
Replies
10
Views
3K
Undergrad Newscientist claims machine violates 2nd law of thermodynamics
  • · Replies 10 ·
Replies
10
Views
3K
Undergrad Gasoline vs Ethanol: Choosing the Best Fuel for Your Wichita, KS Engine
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Thermodynamics (Callen) Question
  • · Replies 3 ·
Replies
3
Views
8K
Graduate Statistical mechanics - why is temperature not a mechanical variable
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad How do aeroplane wings support the forces and engines?
  • · Replies 9 ·
Replies
9
Views
28K
Undergrad How does heat leave the earth?
  • · Replies 3 ·
Replies
3
Views
8K
Undergrad Explan this phenomena with a hot steel rod
  • · Replies 3 ·
Replies
3
Views
3K
Undergrad Burning Calories, Burning Wood, Grams to Cals?
  • · Replies 21 ·
Replies
21
Views
26K
Undergrad What is the equilibrium temperature of copper and water?
  • · Replies 4 ·
Replies
4
Views
4K
High School Amount of energy on Earth doesn't grow or shrink
  • · Replies 12 ·
Replies
12
Views
3K
High School Practical demonstration of radiation
  • · Replies 2 ·
Replies
2
Views
4K
Graduate What is the significance of Qrev/T in understanding entropy?
  • · Replies 8 ·
Replies
8
Views
18K
High School What is the Best Material for Keeping Food Cool in Insulated Boxes?
  • · Replies 3 ·
Replies
3
Views
6K
Graduate Entropy and possibilty of reversal thereof
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Navier Stokes with chemical reaction
  • · Replies 3 ·
Replies
3
Views
3K
Undergrad How Is Heat Calculated from Friction Over Time?
  • · Replies 10 ·
Replies
10
Views
35K
Undergrad House Color and Heat: Visible vs. IR Radiation
  • · Replies 8 ·
Replies
8
Views
4K
Undergrad How Does Heat Transfer Affect Engine Block Surface Temperatures?
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad Temperature: Does it make sense to say something is twice as cold(or hot)?
  • · Replies 17 ·
Replies
17
Views
19K
Graduate Entropy Decrease: Sample Phenomena Explained
  • · Replies 6 ·
Replies
6
Views
11K
High School Question based on real experience
  • · Replies 5 ·
Replies
5
Views
2K
High School Thermos: Metal vs Glass - What is the Difference?
  • · Replies 3 ·
Replies
3
Views
16K
Undergrad Converting engine power into a force
  • · Replies 3 ·
Replies
3
Views
34K
Undergrad Thermodynamics isue not homework but debate
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Can a pilot hear engine > mach 1?
  • · Replies 12 ·
Replies
12
Views
11K
Undergrad Heat Absorbed Changing 2kg Ice to Steam: Calculation
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Thermodynamics and the Weather
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Calculating Heat Transfer: Freezing Water from -15°C to 10°C
  • · Replies 3 ·
Replies
3
Views
4K
Graduate Equation apply to reversible only or not?
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Linearity of Heat Conductance - Is Heat Transfer the Same in All Directions?
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad Which Liquid to Choose Based on Heat Capacity for Safety?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Is a flame hotter on the outside?
  • · Replies 1 ·
Replies
1
Views
5K
Undergrad Convection, Conduction, Or Radiation. You decide
  • · Replies 2 ·
Replies
2
Views
7K
Graduate Mayor improvement in wikipedia's thermal/statistical physics articles
  • · Replies 2 ·
Replies
2
Views
3K
Graduate How do I calculate lines of constant pressure in a Brayton cycle diagram?
  • · Replies 1 ·
Replies
1
Views
3K
High School Where do the calories go when you pop corn?
  • · Replies 18 ·
Replies
18
Views
9K
Undergrad Know something about Meker Burner?
  • · Replies 2 ·
Replies
2
Views
4K
Undergrad A Ques. From Irreversible Process
  • · Replies 18 ·
Replies
18
Views
5K
Undergrad Can Enough Windwills Cause Climate Change?
  • · Replies 7 ·
Replies
7
Views
7K
Undergrad Why is the boiling point elevation of NaCl solution higher than calculated?
  • · Replies 10 ·
Replies
10
Views
4K
Undergrad Can You Manually Create a Vacuum with a Plunger in a Water-Filled Tube?
  • · Replies 1 ·
Replies
1
Views
5K
Undergrad Violation of 2nd Law of Thermodynamics
  • · Replies 7 ·
Replies
7
Views
6K
Graduate How Does Temperature Affect the Frequency Response of Resonating Materials?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Boltzman Distribution & Principle of a priori probablities
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad How does thermal expansion effect the diameter of a hole?
  • · Replies 3 ·
Replies
3
Views
19K
Graduate Unit cancellation in integration with natural logarithm?
  • · Replies 4 ·
Replies
4
Views
6K
Undergrad Can Portable Air Conditioners Defy the Laws of Thermodynamics?
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Thermo- Heated Air in Brick Box.
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Writing correct physical equation for mixing process
  • · Replies 2 ·
Replies
2
Views
6K
Undergrad Thermal Dispersion Software: Find Heater Effects on Silica
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Boiling liquid in a closed vessel
  • · Replies 3 ·
Replies
3
Views
9K
Graduate Can a 10 nm facet area achieve 10^12W/m^2 for laser heating on a tungsten tip?
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Calculate Final Temp of Thin Steel Piece: Heat Transfer Problem
  • · Replies 2 ·
Replies
2
Views
5K
Undergrad Solving Heat Transfer in an Aluminum Cube: Find Temperature After t Seconds
  • · Replies 14 ·
Replies
14
Views
6K
Undergrad CO2 Pressure Formula: Determine Pressure at Any Temperature
  • · Replies 2 ·
Replies
2
Views
4K
Graduate What is a Closed Path Integral in Thermodynamics?
  • · Replies 5 ·
Replies
5
Views
21K
High School What Causes Car Reflections on Hot Roads?
  • · Replies 2 ·
Replies
2
Views
5K
High School Energy Creation: Gravity as an Infinite Source
  • · Replies 43 ·
2
Replies
43
Views
10K
High School Conversion Device: Mechanical to Heat Energy
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad What are the limitations of the Ideal Gas Law?
  • · Replies 2 ·
Replies
2
Views
16K
Undergrad Vapor density in kg/m3 in CO2 absorber
  • · Replies 3 ·
Replies
3
Views
6K
Graduate How Does the Gibbs-Helmholtz Equation Relate to Calculating Enthalpy?
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad What do the signs in the 1st Law of Thermodynamics mean?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Mystery of Candle Wax: Solving the Liquid to Solid Transition
  • · Replies 2 ·
Replies
2
Views
6K
Graduate Reviewing for the FE exam, came across questionable thermo problem.
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Rapid adiabatic compression - puzzle
  • · Replies 14 ·
Replies
14
Views
6K
Undergrad What is the relationship between Young's Modulus and temperature?
  • · Replies 1 ·
Replies
1
Views
2K