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Undergrad Understand the Thermodynamic Identity: Is This Correct?

  • Sebas4
  • · Replies 3 ·
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3

Undergrad Question about the rules of thermodynamics

  • samy4408
  • · Replies 1 ·
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1

Undergrad Is this water pumping device using the Rankine cycle?

  • justincorhad
  • · Replies 4 ·
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4

High School What Does Svante Arrhenius' Salt Water Experiment Reveal About Entropy?

  • Bernadette
  • · Replies 5 ·
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5

Undergrad How Does the Flow Equation Apply in Higher Dimensional Phase Spaces?

  • Kashmir
  • · Replies 7 ·
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7

High School Did Sadi Carnot's Doubts Pave the Way for Clausius's Generalization in Physics?

  • Bernadette
  • · Replies 13 ·
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13

Undergrad Why Should the Total Number of States Equal the Volume of an Octant?

  • Kashmir
  • · Replies 7 ·
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7

Undergrad Equipartition theorem and Drag

  • Opus_723
  • · Replies 2 ·
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2

Undergrad Interpreting Thermal Power in Cylinder with Source & Sink

  • George444fg
  • · Replies 5 ·
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5

Undergrad Number of ways to distribute particles

  • Kashmir
  • · Replies 5 ·
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5

Undergrad Kappa factor in heat equation and heat Flux

  • George444fg
  • · Replies 3 ·
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3

Undergrad Compressible choked gas flow through an orifice -- Excel formula

  • stuartsjg
  • · Replies 1 ·
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1

High School Does Light Energy contain Heat Energy in a large scale?

  • ggandy
  • · Replies 2 ·
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2

Undergrad Equilibrium equation if the barrier allows particle exchange

  • Kashmir
  • · Replies 7 ·
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7

High School Clarification : S = K ln W and S = K ln omega

  • Point Conception
  • · Replies 8 ·
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8

Undergrad Help understanding "Heat capacity"

  • nemanjavuk
  • · Replies 28 ·
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28

Graduate Enthelpy and Isentropic compression/expansion

  • RoRoRo
  • · Replies 3 ·
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3

Undergrad Pool Solar Heating - Help orienting the roof-top solar collector please

  • seanduffy
  • · Replies 1 ·
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1

Undergrad How did Charles obtain his law when absolute temperature wasn't define

  • Ahsan Khan
  • · Replies 3 ·
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3

High School "Prove" that LPG burns with a blue flame ....

  • KedarMhaswade
  • · Replies 15 ·
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15

Undergrad Probability in a small interval is ##P. dx##

  • Kashmir
  • · Replies 6 ·
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6

High School Extrapolation of relationship of temperature and volume for gas

  • PainterGuy
  • · Replies 7 ·
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7

Undergrad Relating Entropy and the 2nd law

  • guyvsdcsniper
  • · Replies 2 ·
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2

Undergrad Can Continuous Approximation Improve Understanding of 1D Random Walks?

  • Kashmir
  • · Replies 1 ·
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1

Undergrad A System is the transfer of energy between two mediums?

  • wrenchtime
  • · Replies 14 ·
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14

Graduate Calculating the heat loss of an open water tank (aquarium)

  • Apgomes3
  • · Replies 2 ·
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2

Undergrad The Job of the Demon: Compressing Gas Without Work

  • leafy
  • · Replies 3 ·
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3

Graduate Vacuum Flask Thermodynamic Equation

  • Petersenwill36
  • · Replies 2 ·
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2

Undergrad Standard measure of distance from equilibrium for all systems

  • pepperellrob
  • · Replies 2 ·
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2

High School Infrared Detectors & The 2nd Law of Thermodynamics

  • Devin-M
  • · Replies 152 ·
6
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152

Undergrad Book suggestions for classical thermodynamics

  • Istiak
  • · Replies 6 ·
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6

High School Thermodynamics of Resistive Heating at Low Power

  • bob012345
  • · Replies 33 ·
2
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33

High School How does heat conductivity work? Al -> Cu

  • hlock
  • · Replies 6 ·
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6

Undergrad Elementary Ideas About Entropy -- Is this textbook example correct?

  • BrandonInFlorida
  • · Replies 16 ·
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16

High School How Does Ambient Temperature Affect Aquarium Water Temperature?

  • Protek
  • · Replies 3 ·
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3

Undergrad Modeling the concentration of gas constituents in a Force Field

  • Anon42
  • · Replies 6 ·
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6

Undergrad The Equilibrium Macrostate: Reif's Statistical Physics

  • Kashmir
  • · Replies 15 ·
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15

High School HFC-134a Refrigerant & 2nd Law of Thermodynamics

  • Devin-M
  • · Replies 20 ·
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20

Undergrad Probability in statistical mechanics

  • Kashmir
  • · Replies 23 ·
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23

Undergrad How Long Does It Take to Melt a 12.5 kg Gold Bar at 3000°C?

  • john56789
  • · Replies 18 ·
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18

Undergrad Getting a sauna to a certain temperature - faster with more rocks?

  • davidorn
  • · Replies 25 ·
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25

High School Waste-to-energy question (not homework)

  • Elli1
  • · Replies 13 ·
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13

Undergrad Why does the entropy of a closed system remain constant in a reversible process?

  • Afo
  • · Replies 10 ·
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10

Graduate Coping mechanisms for thermodynamics?

  • WaffleFe
  • · Replies 8 ·
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8

Undergrad Can Specific Oscillating Electric Fields Heat Dipolar Molecules Selectively?

  • maayan_aloni
  • · Replies 4 ·
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4

Undergrad Ideal working gas for a Stirling engine

  • cmb
  • · Replies 1 ·
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1

Undergrad 64% n.th + COP4 = more heat out of fuel than its calorific value?

  • cmb
  • · Replies 2 ·
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2

Undergrad What is the energy output of a Gravity Battery System?

  • ScottyP99
  • · Replies 18 ·
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18

Graduate Meaning of density of microstates in phase space

  • Kaguro
  • · Replies 1 ·
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1

Undergrad Thermodynamic functions and state variables

  • cianfa72
  • · Replies 8 ·
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8

Undergrad Expansion or Compression Work by Gas ##=\int{P_{ext}dV}##

  • Chestermiller
  • · Replies 45 ·
2
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Undergrad Understanding Wrev > Wirrev in Thermodynamics

  • Ale_Rodo
  • · Replies 17 ·
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17

High School Heat and Infrared radiated from an object

  • LightningInAJar
  • · Replies 12 ·
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12

High School How to estimate the heating power of warm air entering a room?

  • guyburns
  • · Replies 8 ·
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8

Undergrad Making a heat shield for my car's exhaust

  • matt621
  • · Replies 6 ·
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6

Graduate How to calculate the temperature change of a laser-irradiated material

  • jgk5141
  • · Replies 6 ·
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6

Undergrad About Reversible vs Irreversible Gas Compression and Expansion Work

  • cianfa72
  • · Replies 4 ·
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4

Undergrad Entropy change due to heat transfer between sources

  • cianfa72
  • · Replies 15 ·
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15

Graduate Heat and Entropy Increase Confusion

  • Electric to be
  • · Replies 13 ·
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13

Undergrad Passive radiative cooling of surfaces below ambient air temperature

  • greypilgrim
  • · Replies 3 ·
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3

High School Is a Battery-Electric Vehicle Really More Efficient Than a Gas Car?

  • msumm21
  • · Replies 5 ·
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5

High School Is Entropy Truly Undefined in Physical Systems?

  • lukephysics
  • · Replies 3 ·
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3

Graduate Why does the past hypothesis let us believe our memories?

  • olamosey
  • · Replies 14 ·
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14

Graduate Show that entropy is a state function

  • Philip Koeck
  • · Replies 57 ·
2
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57

Undergrad Is Entropy the inexorable conversion of potential to kinetic energy?

  • Tertius
  • · Replies 17 ·
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17

Undergrad Is GHG Theory/GW in conflict with Kinetic Theory of Gases?

  • guidoLaMoto
  • · Replies 6 ·
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6

Undergrad Theoretical maximum efficiency of a heat engine without Carnot

  • KedarMhaswade
  • · Replies 1 ·
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1

High School Cheapest equipment to boil water at 60℃

  • KedarMhaswade
  • · Replies 15 ·
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15

Undergrad Thermal Expansion of A Square Shaped Object

  • Sunny007
  • · Replies 4 ·
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4

Undergrad Maxwell’s Relations and Differentiating With Respect to ##N_i##

  • cwill53
  • · Replies 2 ·
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2

Undergrad How does the cooling effect of this "white-est paint" work?

  • jg167
  • · Replies 3 ·
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3

Undergrad Estimating a thermal equilibrium on a custom made fridge

  • RiccardoVen
  • · Replies 23 ·
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23

High School Thought Experiment: Does Gravity's Compression Warm an Object?

  • Cayman
  • · Replies 1 ·
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1

Undergrad Change of Variables in Thermodynamics

  • cwill53
  • · Replies 4 ·
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4

Undergrad Boltzmann Distribution: Formula & Fig 2a in Document

  • rabbed
  • · Replies 4 ·
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4

Undergrad Is the Equation h = u + (0.185)Pv Accurate for Converting Energy Units?

  • wrenchtime
  • · Replies 2 ·
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2

Graduate Is there a conflict between CPT symmetry and the 2nd law of thermodynamics?

  • Jarek 31
  • · Replies 1 ·
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1

Undergrad Mathematical equation for the deviation from ideality of real gases

  • phantomvommand
  • · Replies 2 ·
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2

Undergrad Why is Entropy defined as a fraction of heat over temperature?

  • Ale_Rodo
  • · Replies 45 ·
2
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45

High School Irreversible Process to Move Gas from State 1 to State 2

  • davidwinth
  • · Replies 30 ·
2
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30

Undergrad Power equation using heat instead of work

  • ikihi
  • · Replies 25 ·
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25

Undergrad Looking for materials about ensemble average

  • Haorong Wu
  • · Replies 1 ·
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1

Graduate Volume constraint in micro-canonical derivation of statistical physics

  • Philip Koeck
  • · Replies 3 ·
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3

Graduate Heat bath and canonical ensembles

  • WWCY
  • · Replies 8 ·
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8

Undergrad Strange feature of BE, FD and Boltzmann distributions

  • Philip Koeck
  • · Replies 6 ·
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6

Undergrad What is the real meaning of a pressure between 0 and 1 bar?

  • ZdMh
  • · Replies 20 ·
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20

Undergrad Compressing gas with piston: reasons for temperature increase?

  • ikihi
  • · Replies 5 ·
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5

Undergrad Entropy question involving our Solar System

  • gptejms
  • · Replies 29 ·
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29

Undergrad The pressure exerted by radiation

  • PainterGuy
  • · Replies 22 ·
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22

High School Physical temperature and antenna temperature

  • Unconscious
  • · Replies 3 ·
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3

Undergrad Entropy after removing partition separating gas into two compartments

  • burian
  • · Replies 9 ·
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9

High School Cryogenic storage dewars and EM waves

  • ProjectFringe
  • · Replies 6 ·
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6

High School Cooling the room with a ceiling fan and skylight window

  • Cats869
  • · Replies 10 ·
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10

Undergrad How Does Heat Transfer Impact Our Sensation of Temperature?

  • rudransh verma
  • · Replies 23 ·
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23

Graduate Can Raoult's Law Determine Boiling Points of Fuel Oil?

  • hartmais
  • · Replies 3 ·
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3

Undergrad Thermodynamic Pros/Cons coating light metal tanks with rubber

  • Steven Bolgiano
  • · Replies 7 ·
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7

Undergrad How fast does an aircraft need to fly before it starts to glow?

  • lyuc
  • · Replies 22 ·
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22

Graduate Calculating temp rise caused by electric arc in an enclosed space

  • pixelsnpings
  • · Replies 3 ·
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3

Undergrad HVAC dehumidifier energy wastage

  • treB321
  • · Replies 8 ·
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8

High School Will entropy eventually destroy even an open and efficient system?

  • D_Baine
  • · Replies 1 ·
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1