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The violation of Newton's third Law
Oct 18, 2020
Replies
28
Views
4K
Entropy question: Does a substance at 0K have no entropy?
Oct 17, 2020
Replies
5
Views
2K
Problems understanding the 2nd law of thermodynamics
Oct 7, 2020
Replies
5
Views
2K
Physicists build Graphene Thermodynamic Battery
Oct 3, 2020
Replies
3
Views
1K
Gibbs "Paradox" and the Entropy of mixing
Sep 30, 2020
Replies
3
Views
2K
Boiling & Critical Temperature: Understanding The Difference
Sep 29, 2020
Replies
3
Views
2K
Why the alcohol thermometer is less precise than the mercury one?
Sep 23, 2020
Replies
6
Views
2K
Can Phonons and/or Thz+ Acoustic FX cause Ionizing Radiation?
Sep 16, 2020
Replies
2
Views
1K
Heating substances in paper cups?
Sep 13, 2020
Replies
4
Views
3K
How Does Temperature Affect Sound Wave Velocity in Air?
Sep 7, 2020
Replies
2
Views
3K
Inconsistent Radiation Questions
Sep 5, 2020
Replies
7
Views
1K
Rate of conduction heat transfer with different hot-side and cold-side areas
Sep 1, 2020
Replies
8
Views
2K
First law of thermodynamics and the work done on a system
Aug 21, 2020
Replies
13
Views
2K
Why is entropy of an object inversely related to its temperature?
Aug 17, 2020
Replies
12
Views
2K
Calculating Bricks for Winter Overnight Heat Storage in Stove
Aug 11, 2020
Replies
11
Views
3K
Why are Water and Ethanol densities specified at different temperatures?
Aug 7, 2020
Replies
10
Views
2K
Is the Second Law of Thermodynamics Falsifiable?
Aug 5, 2020
3
Replies
100
Views
8K
Euler's equation of thermodynamics in free expansion (Joule expansion)
Aug 1, 2020
Replies
4
Views
2K
Classical Predictions of Scattered Radiation
Jul 31, 2020
Replies
5
Views
1K
Should ice take longer to melt when used to run a heat engine?
Jul 28, 2020
2
Replies
87
Views
8K
Is the principal of superposition of forces a part of the second law?
Jul 20, 2020
Replies
19
Views
2K
Reversible Otto Cycle Efficiency: Investigating the Difference from Carnot's
Jul 18, 2020
Replies
8
Views
2K
Non-equilibrium thermodynamics
Jul 17, 2020
Replies
5
Views
1K
Does the rate of which something melts/vaporizes increases with heat?
Jul 10, 2020
Replies
8
Views
1K
Going from 1st state to 2nd through irreversible isothermal expansion
Jul 5, 2020
Replies
10
Views
2K
How Does CMB Radiation Relate to Blackbody Temperature?
Jul 5, 2020
Replies
21
Views
3K
At what size is kinetic energy no longer related to temperature?
Jun 24, 2020
Replies
16
Views
2K
Reversible processes need to be ONLY isothermal or adiabatic?
Jun 12, 2020
Replies
3
Views
2K
What chemical properties affect the specific heat?
Jun 10, 2020
Replies
2
Views
2K
How is the wavelength of emitted EM radiation measured?
Jun 5, 2020
Replies
14
Views
1K
Were science and engineering seen as distinct fields in 18th century
May 23, 2020
Replies
11
Views
1K
Temperature is a measure of the average kinetic energy of a gas?
May 22, 2020
Replies
4
Views
2K
Modelling Heat Transfer for Pulsating Laminar Duct Flow
May 18, 2020
Replies
20
Views
2K
Effect of time dilation on temperature
May 16, 2020
Replies
4
Views
2K
The Physics of cooking breakfast (basic thermodynamics)
May 1, 2020
Replies
1
Views
2K
Conduction heat transfer with varying cross section
Apr 28, 2020
Replies
6
Views
2K
Thermodynamic equation of differentials (and how to work with them)
Apr 23, 2020
Replies
1
Views
1K
Can hot water cool down through radiation?
Apr 20, 2020
Replies
11
Views
2K
Is latent heat only released and absorbed as radiation?
Apr 19, 2020
Replies
1
Views
850
Can heat transfer break an equilibrium?
Apr 19, 2020
Replies
3
Views
1K
Why can the efficiency of a refrigerator (heat pump) be greater than one?
Apr 16, 2020
Replies
29
Views
7K
E-M fields mutual induction in E-M radiation
Apr 5, 2020
Replies
15
Views
1K
Best outside color for thermal insulation
Apr 3, 2020
Replies
1
Views
3K
At what range does a conservative force contribute to the thermal U?
Apr 1, 2020
Replies
2
Views
958
Thermodynamic sign convention for heat (i.e. in heat engines)
Apr 1, 2020
Replies
11
Views
3K
How do molecules radiate photons and contribute to thermal radiation?
Mar 31, 2020
Replies
5
Views
1K
Carnot function -- How can I prove f(t2,t1)=f(t2−t1,0)
Mar 29, 2020
Replies
7
Views
1K
The Second Law of Thermodynamics and the Stefan-Boltzmann Law
Mar 28, 2020
Replies
6
Views
2K
Can Entropy Serve as a Proxy for Competition Levels in Economic Systems?
Mar 27, 2020
Replies
19
Views
1K
How to think about entropy microstates/macrostates for a gas in a box
Mar 21, 2020
Replies
1
Views
1K
Fundamental equation (thermodynamics) from Euler's equation
Mar 21, 2020
Replies
1
Views
2K
Partial derivatives of thermodynamic state functions
Mar 20, 2020
Replies
1
Views
2K
Describing the second law of motion using linear momentum
Mar 17, 2020
Replies
2
Views
855
Surface temperature-laser radiation
Mar 12, 2020
Replies
1
Views
1K
What is the true meaning of temperature? Is it global or local?
Mar 11, 2020
Replies
10
Views
2K
Integration of inexact differentials in Thermodynamics
Mar 7, 2020
Replies
1
Views
1K
Thermodynamics: calculate thermodynamic derivative from data?
Mar 6, 2020
Replies
1
Views
1K
I with understanding Kepler's second law
Mar 6, 2020
Replies
9
Views
2K
Night sky cooling, cooling by transmission or as 'heat sink'
Mar 1, 2020
Replies
5
Views
1K
What Happens to Entropy in a Shrinking, High-Temperature Universe?
Feb 20, 2020
Replies
8
Views
2K
What is the role of heat and pressure in a slow thermodynamic process?
Feb 16, 2020
Replies
14
Views
1K
How to show directly that ##\vec{F}=-\mu\vec{v}## increases entropy?
Jan 31, 2020
Replies
10
Views
1K
Clarification about Kirchhoff's law of thermal radiation
Jan 30, 2020
Replies
6
Views
2K
Decoding Thermal Measurement Equations with KD2 Pro
Jan 24, 2020
Replies
2
Views
1K
Below what freezing temperature is it not possible to have frost?
Jan 21, 2020
Replies
3
Views
2K
Thermal Radiation Behavior of Non-Black Bodies: I'm Confused!
Jan 20, 2020
Replies
2
Views
2K
What is the change in entropy for a colloid settling out of solution?
Jan 17, 2020
Replies
6
Views
1K
How many reversible thermodynamic cycles are there between two heat reservoirs?
Jan 15, 2020
Replies
12
Views
3K
Meaning of thermodynamic probability
Jan 13, 2020
Replies
4
Views
3K
Temperature inside an enclosed space
Jan 10, 2020
Replies
3
Views
3K
Brewster's angle, dipole radiation and refraction
Jan 6, 2020
Replies
2
Views
3K
Low-Temp Liquid Helium System: Evaporation Heat & Temperature
Dec 28, 2019
Replies
5
Views
2K
1st Law of thermodynamics : moving reference frame
Dec 24, 2019
Replies
8
Views
1K
Can solar heating of hot cathodes generate useful power?
Dec 22, 2019
Replies
15
Views
2K
Temperature and level temperatures
Dec 20, 2019
Replies
1
Views
2K
Is Elasticity Possible in Collisions at a Microscopic Level?
Dec 20, 2019
Replies
1
Views
2K
Contribution of surface heat to atmospheric warming
Dec 20, 2019
Replies
4
Views
2K
Irreversible cycles, Carnot's Principle and volume-pressure diagrams
Dec 18, 2019
Replies
7
Views
2K
Droplets on a solid / liquid surface (engineering)
Dec 17, 2019
Replies
12
Views
2K
Thermodynamics and Statistical Mechanics: An intermediate level course
Dec 17, 2019
Replies
1
Views
7K
Help finding thermal insulation physics paper
Dec 17, 2019
Replies
1
Views
3K
Does radiation pressure depend on the wave phase?
Dec 17, 2019
Replies
9
Views
2K
What is the Entropy at ZERO Degrees Kelvin?
Dec 11, 2019
Replies
18
Views
2K
Confused about use of external vs internal pressure in thermodynamics
Dec 10, 2019
Replies
13
Views
3K
Can a black material reflect light when heated to incandescence?
Dec 8, 2019
Replies
4
Views
2K
Ignoring the acceleration of a piston in thermodynamics
Dec 7, 2019
Replies
4
Views
1K
Relation between the arrow of time and entropy
Dec 3, 2019
Replies
6
Views
1K
Temperatures of the hot source and cold sink in a heat engine
Nov 28, 2019
Replies
2
Views
3K
How to calculate entropy from positions and velocities of gas molcules
Nov 24, 2019
Replies
6
Views
867
How Engineering physics impact on technology?
Nov 24, 2019
Replies
5
Views
2K
Calculating the "mean values" in the thermodynamic limit
Nov 23, 2019
Replies
17
Views
1K
Black Body Radiation -- why is it not at discrete wavelengths?
Nov 15, 2019
Replies
3
Views
2K
Does classical statistical physics predict newer things vs. thermodynamics?
Nov 13, 2019
Replies
4
Views
2K
Power delivered/Internal work done by a car's engine
Nov 12, 2019
Replies
21
Views
2K
Can Macroscopically Distinguishable Objects Have the Same Entropy?
Nov 3, 2019
Replies
3
Views
956
Thermal inertia vs effusivity, what is the difference?
Oct 30, 2019
Replies
4
Views
2K
Is Heat Capacity Derivable for Non-Ideal Liquid Mixtures?
Oct 29, 2019
Replies
4
Views
1K
Temperature and non-equilbrium thermodynamics
Oct 25, 2019
Replies
10
Views
1K
Probability of a fluctuation/entropy decrease
Oct 23, 2019
Replies
2
Views
1K
Do two boxes expand equally with temperature if one has a Hole?
Oct 19, 2019
Replies
2
Views
746
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