Thermodynamics Forum

Post thread
Graduate Gas radiation question - He, H2 vs O2, N2
  • · Replies 9 ·
Replies
9
Views
6K
High School Combustion/explosion reactions
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad How can I accurately calculate resistive heating for an AC current?
  • · Replies 7 ·
Replies
7
Views
17K
Undergrad I read that vehicles over the last 20 years have increased operating temps by
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Understanding PDEs and Boundary Conditions for Heat Transfer in Ice Engineering
  • · Replies 7 ·
Replies
7
Views
2K
Graduate Interaction of Radiation with Matter
  • · Replies 3 ·
Replies
3
Views
3K
Undergrad Understanding Thermionic Diodes: How Do They Work?
  • · Replies 9 ·
Replies
9
Views
5K
Graduate Aerodynamic heating on rocket fins
  • · Replies 1 ·
Replies
1
Views
4K
Graduate What Does Feynman Describe as a Reversible Machine in His Lectures?
  • · Replies 3 ·
Replies
3
Views
5K
Undergrad Lens questions from a software engineer
  • · Replies 4 ·
Replies
4
Views
3K
High School Question about liquid expulsion from a spray bottle
  • · Replies 5 ·
Replies
5
Views
6K
Graduate Projected temperature rise of insulated ice block
  • · Replies 4 ·
Replies
4
Views
4K
Undergrad What Does the Symbol in the Heat Equation Represent?
  • · Replies 2 ·
Replies
2
Views
4K
Undergrad Diferent kind of energy (heat and kinetic)
  • · Replies 41 ·
2
Replies
41
Views
7K
Graduate Thermal Conductivity, Specific Heat & Human Perception: A Physics Q
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Can Entropy Reveal the Secrets of the Universe? A Search for Einstein's Paper
  • · Replies 1 ·
Replies
1
Views
3K
Sensitive quick digital thermometer
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad Less than 0 kelvin? Meaning of temperature
  • · Replies 23 ·
Replies
23
Views
10K
High School Why Did My Milk Bottle Shrink in the Heat?
  • · Replies 15 ·
Replies
15
Views
3K
Undergrad Gas Laws Weakness: Moving Plunger In Heats Gas, But Moving Out May Not Cool It
  • · Replies 11 ·
Replies
11
Views
3K
Undergrad Perpetual Motion and the Laws of Thermodynamics
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Energy Consumed Versus Energy Returned
  • · Replies 12 ·
Replies
12
Views
3K
Undergrad Mixing three water quantities at different temperatures
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Energy transfer due to evanescent fields
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Difference between work and heat in thermodynamics
  • · Replies 6 ·
Replies
6
Views
13K
Undergrad Heat transfer at high temperature
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad How Long Must Water Stay Underground in PEX Pipe for Geothermal Cooling?
  • · Replies 7 ·
Replies
7
Views
14K
Undergrad If there was steal between earth and the sun instead of a vacuum
  • · Replies 8 ·
Replies
8
Views
3K
Graduate According to Thermodynamics Everything should Pop into Existence?
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad Calculate Welding Heat Input per Point
  • · Replies 6 ·
Replies
6
Views
26K
Graduate Isn't this spooky variable a problem?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Why doesn't infrared radiation travel through glass
  • · Replies 24 ·
Replies
24
Views
95K
Undergrad Can I Calculate Engine Speed from Sound Frequency Inside an Airplane?
  • · Replies 9 ·
Replies
9
Views
4K
Undergrad Build a Home Desalination Plant for Power
  • · Replies 11 ·
Replies
11
Views
3K
Undergrad Adiabatic compression at a constant rate
  • · Replies 6 ·
Replies
6
Views
4K
Graduate Nusselt for vertical cylinder with free convection
  • · Replies 6 ·
Replies
6
Views
18K
Undergrad SWL to secure engine onto a flatbed trailer
  • · Replies 2 ·
Replies
2
Views
4K
Graduate How Do You Calculate Cooking Intensity from Cooling in an Oven Cycle?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Complex Thermo-Dynamic System of Equations
  • · Replies 2 ·
Replies
2
Views
2K
Graduate What is the mean molecular speed of Mercury Vapor at room temperature?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate What is the connection between detailed balance and thermodynamic equilibrium?
  • · Replies 1 ·
Replies
1
Views
4K
Undergrad Air in Mercury & Sprengel Pump Explained
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Confusion on Source of EM Radiation? (segment Serway)
  • · Replies 2 ·
Replies
2
Views
2K
High School Confused about Newton's third law again?(Doc Al and others help)
  • · Replies 10 ·
Replies
10
Views
3K
Undergrad Euler's First Law and the Conservation of Momentum
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Kirchhoff's second law and inductor's field
  • · Replies 19 ·
Replies
19
Views
10K
Undergrad When a meteoroid enters the atmosphere
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad Can adiabatic process be isothermal?
  • · Replies 41 ·
2
Replies
41
Views
11K
Graduate Does Optic Focusing Contradict the Second Law of Thermodynamics?
  • · Replies 56 ·
2
Replies
56
Views
13K
Graduate The fundamental thermodynamic relation
  • · Replies 8 ·
Replies
8
Views
6K
High School Wikipedia's defintion of the joule is confusing me
  • · Replies 10 ·
Replies
10
Views
3K
Graduate Can Maxwell's equations alone explain the momentum of EM radiation?
  • · Replies 25 ·
Replies
25
Views
4K
Graduate Understanding Far Field Radiation of Hertzian Dipoles in Relation to Orientation
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Reflection and radiation pressure.
  • · Replies 9 ·
Replies
9
Views
7K
Graduate What is Feynman saying here? (entropy)
  • · Replies 6 ·
Replies
6
Views
4K
Graduate Explaining (ir)reversibility with S.M.
  • · Replies 2 ·
Replies
2
Views
2K
Graduate A question about the phase of pump wave of a dipole and radiation of the dipole
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Radiation pressure - classical description
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Terahertz radiation converted into heat
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad Flame temperature based on colour
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Clarification on 1st law of thermodynamics and e=mc^2
  • · Replies 17 ·
Replies
17
Views
7K
Undergrad Why Isn't Wind Hot Despite Its Motion?
  • · Replies 26 ·
Replies
26
Views
7K
Graduate Molar specific heat capacities for gases
  • · Replies 1 ·
Replies
1
Views
3K
High School Energy required per day for survival by an individual
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Object’s speed and its heating temperature
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Derivation of the Boltzmann constant
  • · Replies 10 ·
Replies
10
Views
7K
Undergrad Why Do Molecules Move Above Absolute Zero?
  • · Replies 19 ·
Replies
19
Views
8K
High School If energy is never lost where is it?
  • · Replies 4 ·
Replies
4
Views
8K
Graduate Change in Free Energy in terms of First Law
  • · Replies 11 ·
Replies
11
Views
4K
Undergrad What Do Wave Crests in Electromagnetic Radiation Represent?
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Quick question about Microwave radiation
  • · Replies 3 ·
Replies
3
Views
4K
Graduate Laws Of Thermodynamics (Pre-university)
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Solving Enthalpy for Ideal Gas: Finding H as a Function of S and P
  • · Replies 2 ·
Replies
2
Views
12K
Undergrad Difference between enthelpy and internal energy
  • · Replies 6 ·
Replies
6
Views
45K
Undergrad What are the unknown variables in the flowrate equation?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad N2 gas temperature change by different compression/expansion speeds
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Loss of heat from magma of Earth
  • · Replies 9 ·
Replies
9
Views
3K
High School What is the Greenhouse Effect and How Does it Impact Our Planet?
  • · Replies 8 ·
Replies
8
Views
3K
How to reach 2,000 Fº at home?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Thermodynamic Properties of a Gas
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad How Does Rapid Compression Affect Gas Pressure and Temperature?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Development of 2nd Law Of Thermodynamics
  • · Replies 113 ·
4
Replies
113
Views
19K
Undergrad Coefficient of static friction in a 3D Games Engine
  • · Replies 5 ·
Replies
5
Views
5K
Graduate Negative temperature and the amazing power of SM
  • · Replies 11 ·
Replies
11
Views
3K
Graduate An old theory of mine was scientifically proven recently
  • · Replies 7 ·
Replies
7
Views
4K
High School How Does Heat Conversion Differ from Magnetic Energy Conversion?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Does Revving Closer to Peak Power Improve Fuel Efficiency in Motorcycles?
  • · Replies 41 ·
2
Replies
41
Views
16K
Graduate Thermodynamics and the Arrow of Time
  • · Replies 11 ·
Replies
11
Views
3K
Undergrad 60-cycle vibration from heating pad?
  • · Replies 3 ·
Replies
3
Views
9K
Undergrad Can Air Be Compressed Without a Container?
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Calculating heat loss by evaporation (water)
  • · Replies 2 ·
Replies
2
Views
26K
Undergrad Oxygen-Free Oven: Effects on Objects & Chemicals
  • · Replies 8 ·
Replies
8
Views
5K
Graduate First order phase transition (van der waals gas)
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Molar heat capacity for an ideal monoatomic gas
  • · Replies 2 ·
Replies
2
Views
6K
Undergrad Energy Conversion: Where Does the Energy Come From?
  • · Replies 4 ·
Replies
4
Views
3K
High School How can we define thermodynamics
  • · Replies 1 ·
Replies
1
Views
2K
High School Question about Newtons third law
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad A question about heat transfer
  • · Replies 3 ·
Replies
3
Views
3K
High School Salt Melting Ice: Heat & Cooling Effects
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad KE of Gas Molecules: n, KbT, U, and 3/2R
  • · Replies 2 ·
Replies
2
Views
3K