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Undergrad Clarification about Kirchhoff's law of thermal radiation

  • carter7gindenv
  • · Replies 6 ·
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6

Undergrad Why is the black body spectrum bell shaped if it's absorptance is equal to 1?

  • carter7gindenv
  • · Replies 21 ·
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21

Undergrad Decoding Thermal Measurement Equations with KD2 Pro

  • carter7gindenv
  • · Replies 2 ·
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2

High School Below what freezing temperature is it not possible to have frost?

  • gary350
  • · Replies 3 ·
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3

Undergrad Thermal Radiation Behavior of Non-Black Bodies: I'm Confused!

  • carter7gindenv
  • · Replies 2 ·
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2

Graduate What is the change in entropy for a colloid settling out of solution?

  • Timtam
  • · Replies 6 ·
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6

Graduate How many reversible thermodynamic cycles are there between two heat reservoirs?

  • FranzDiCoccio
  • · Replies 12 ·
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12

High School Internal energy in the context of rest energy

  • etotheipi
  • · Replies 8 ·
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8

Graduate Meaning of thermodynamic probability

  • Saptarshi Sarkar
  • · Replies 4 ·
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4

High School Temperature inside an enclosed space

  • black hole 123
  • · Replies 3 ·
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3

Undergrad Using Henry's law to calculate ammonia concentration?

  • Hopper295
  • · Replies 5 ·
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5

High School Combining uncertainties (error propagation)

  • Cheesycheese213
  • · Replies 6 ·
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6

Graduate Brewster's angle, dipole radiation and refraction

  • Aetholite
  • · Replies 2 ·
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2

Graduate Low-Temp Liquid Helium System: Evaporation Heat & Temperature

  • yamata1
  • · Replies 5 ·
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5

Graduate 1st Law of thermodynamics : moving reference frame

  • thinkingcap81
  • · Replies 8 ·
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8

Graduate Irradition to base of cylindric gray gas volume

  • M_1
  • · Replies 4 ·
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4

Graduate Can solar heating of hot cathodes generate useful power?

  • JoJo
  • · Replies 15 ·
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15

Graduate Temperature and level temperatures

  • ShayanJ
  • · Replies 1 ·
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1

Graduate Is Elasticity Possible in Collisions at a Microscopic Level?

  • Delta2
  • · Replies 1 ·
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1

Graduate Contribution of surface heat to atmospheric warming

  • Graeme M
  • · Replies 4 ·
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4

Undergrad Irreversible cycles, Carnot's Principle and volume-pressure diagrams

  • FranzDiCoccio
  • · Replies 7 ·
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7

Undergrad Does the Euler method give a better insight into adiabatic processess?

  • chuakoktong
  • · Replies 6 ·
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6

Undergrad Droplets on a solid / liquid surface (engineering)

  • binbagsss
  • · Replies 12 ·
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12

Graduate Thermodynamics and Statistical Mechanics: An intermediate level course

  • Greg Bernhardt
  • · Replies 1 ·
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1

Undergrad Help finding thermal insulation physics paper

  • thepaqster
  • · Replies 1 ·
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1

Graduate Does radiation pressure depend on the wave phase?

  • Uchida
  • · Replies 9 ·
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9

High School Kelvin - not the basic, but the derived unit of measurement?

  • Piotrovskiy Yury
  • · Replies 13 ·
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13

Undergrad Solving Adiabatic Process for Two Compartments

  • chuakoktong
  • · Replies 1 ·
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1

Graduate What is the Entropy at ZERO Degrees Kelvin?

  • fxdung
  • · Replies 18 ·
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18

Graduate Confused about use of external vs internal pressure in thermodynamics

  • etotheipi
  • · Replies 13 ·
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13

Undergrad Can a black material reflect light when heated to incandescence?

  • theobromine
  • · Replies 4 ·
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4

Undergrad Ignoring the acceleration of a piston in thermodynamics

  • etotheipi
  • · Replies 4 ·
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4

High School Irreversible expansion of gas against gas

  • Christofer Br
  • · Replies 10 ·
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10

Graduate Relation between the arrow of time and entropy

  • vitorvenancio
  • · Replies 6 ·
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6

Undergrad What are the real-world applications of convection?

  • LordWhiplash
  • · Replies 3 ·
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3

Graduate Temperatures of the hot source and cold sink in a heat engine

  • FranzDiCoccio
  • · Replies 2 ·
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2

Graduate Use of the Stefan Boltzmann Law in a Non Equilibrium system?

  • colorofeternity
  • · Replies 1 ·
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1

Graduate How to calculate entropy from positions and velocities of gas molcules

  • olgerm
  • · Replies 6 ·
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6

High School How Engineering physics impact on technology?

  • usmantemuri
  • · Replies 5 ·
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5

Graduate Calculating the "mean values" in the thermodynamic limit

  • fxdung
  • · Replies 17 ·
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17

Graduate Black Body Radiation -- why is it not at discrete wavelengths?

  • SebastianRM
  • · Replies 3 ·
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3

Graduate Does classical statistical physics predict newer things vs. thermodynamics?

  • Aidyan
  • · Replies 4 ·
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4

Undergrad Power delivered/Internal work done by a car's engine

  • alkaspeltzar
  • · Replies 21 ·
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21

Graduate Can Macroscopically Distinguishable Objects Have the Same Entropy?

  • shimzz5
  • · Replies 3 ·
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3

Graduate Equipartition of energy in the modes of a resonant cavity

  • Guilherme Franco
  • · Replies 4 ·
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4

Undergrad Thermal inertia vs effusivity, what is the difference?

  • carter7gindenv
  • · Replies 4 ·
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4

Graduate Is Heat Capacity Derivable for Non-Ideal Liquid Mixtures?

  • Gvozden
  • · Replies 4 ·
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4

High School Converting 10 PSI to Electrical Energy

  • bjAndrea
  • · Replies 15 ·
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15

Graduate Temperature and non-equilbrium thermodynamics

  • pervect
  • · Replies 10 ·
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10

Graduate Probability of a fluctuation/entropy decrease

  • shimzz5
  • · Replies 2 ·
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2

Undergrad Do two boxes expand equally with temperature if one has a Hole?

  • Frigus
  • · Replies 2 ·
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2

High School Temperature: Definition & Atomic Level Effects

  • Frigus
  • · Replies 6 ·
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6

Graduate Thermodynamic equilibrium with fixed energy/entropy

  • Jonk
  • · Replies 5 ·
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5

High School Newton's first law and a body on an infinite and frictionless road

  • jonander
  • · Replies 16 ·
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16

Graduate Historic experimental evidence of Kirchhoff's radiation law

  • fsonnichsen
  • · Replies 4 ·
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4

High School Why do we need different temperature scales?

  • Frigus
  • · Replies 40 ·
2
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40

Undergrad Question about Newton's Third Law and and the Force between 2 objects

  • MrDickinson
  • · Replies 21 ·
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21

Graduate Thermal Imaging of people and background temperature

  • Anand Sivaram
  • · Replies 1 ·
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1

Undergrad What does the 2.3 constant in e^Q/2.3RT come from?

  • FQVBSina_Jesse
  • · Replies 1 ·
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1

Undergrad Why is it more efficient to get thermal energy from a higher temperature source?

  • fog37
  • · Replies 16 ·
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16

Undergrad Can a Gold Leaf Electroscope Detect Alpha Particles?

  • Muhammad Danish
  • · Replies 7 ·
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7

Graduate Question about the first law of thermodynamics

  • RedCliff
  • · Replies 3 ·
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3

Undergrad Question about thermodynamics first law

  • Clara Chung
  • · Replies 2 ·
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2

Undergrad Heat Transfer in Metal Tank: Time to Drop from θ2 to θ1

  • Thatrandomdudeacross
  • · Replies 5 ·
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5

Graduate The second law of the thermodynamics and philosophy

  • Ronemberg Junior
  • · Replies 19 ·
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19

Undergrad Heating of elements with laser light

  • philip porhammer
  • · Replies 6 ·
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6

High School Can anyone explain Pascal's principles?

  • Frigus
  • · Replies 16 ·
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16

Undergrad How is absorbed thermal energy invested during a phase change?

  • fog37
  • · Replies 2 ·
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2

Undergrad Airflow direction -- Improving the cooling of my computer

  • Riogunati
  • · Replies 5 ·
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5

Undergrad Condensation as humidity control

  • Yud
  • · Replies 5 ·
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5

Graduate Fuel/oxidizer preheating to a high temperature

  • Tera
  • · Replies 2 ·
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2

Graduate Ambipolar diffusion and sheaths in a bounded plasma

  • Decimal
  • · Replies 2 ·
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2

Undergrad Isentropic Process, General Results for dU and dH

  • Kushwoho44
  • · Replies 1 ·
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1

High School Hypersonic aircraft shock layer color

  • Xforce
  • · Replies 5 ·
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5

High School How does this osmotic system reach equilibrium?

  • Exper
  • · Replies 2 ·
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2

Undergrad Why is hysteresis loss proportional to area hysteresis loop ?

  • fxdung
  • · Replies 3 ·
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3

Graduate Black body radiation, Planck's law, derivation

  • Max Loo Pin Mok
  • · Replies 2 ·
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2

Graduate Entropy in a non inertial reference frame

  • hgandh
  • · Replies 1 ·
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1

Undergrad Direct polar radiation increases as....

  • QuarkDecay
  • · Replies 7 ·
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7

High School Does the Density of a Portable Cloud in a Bottle Depend on Pressure?

  • fizzyfiz
  • · Replies 7 ·
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7

Graduate Thermodynamics: Gas Expansion with Piston Friction

  • Chestermiller
  • · Replies 65 ·
3
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65

Graduate Entropy increase of solid vs liquid

  • thinkingcap81
  • · Replies 19 ·
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19

Graduate Why do we need to supply energy to a biological body to keep entropy decreasing?

  • fxdung
  • · Replies 22 ·
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22

Graduate Entropic Force - Heat Transfer Mechanism

  • mgkii
  • · Replies 5 ·
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5

Graduate Are nuclear or chemical energy release thermodynamic processes?

  • fxdung
  • · Replies 4 ·
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4

High School Why does heat flow from hot to cold?

  • PGaccount
  • · Replies 4 ·
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4

Graduate Heat Absorbed by Gas: An Expert Explanation

  • Nikhil Rajagopalan
  • · Replies 2 ·
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2

Undergrad Does the postulate of equal a priori probability apply only to equilibrium?

  • Jeremy1986
  • · Replies 8 ·
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8

Undergrad What happens in the molecular structure of a liquid (imcompressible)?

  • MagnusChases
  • · Replies 4 ·
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4

Graduate Carnot's Argument (Cryptic passage in Feynman Lectures v. 1)

  • sponteous
  • · Replies 4 ·
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4

Graduate Definition of an engine operating between two temperatures

  • jojo12345
  • · Replies 1 ·
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1

Undergrad Condensation inside the walls of a bottle

  • Sofi Michaelian
  • · Replies 11 ·
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11

Graduate What is the derivation of the exact Maxwell-Boltzmann distribution?

  • rabbed
  • · Replies 1 ·
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1

Undergrad Precision Temperature Measurement

  • fsonnichsen
  • · Replies 4 ·
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4

Graduate How Does Proton Decay Relate to the Law of Entropy?

  • Gfellow
  • · Replies 21 ·
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21

Undergrad Transporting an Ice Cream Tub in hot weather

  • cmb
  • · Replies 7 ·
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7

Undergrad Liquid Air and Compressed Air Density

  • Anand Sivaram
  • · Replies 3 ·
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3

Graduate Understanding the Kelvin Equation

  • fogl
  • · Replies 1 ·
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1

Graduate What's special about the Carnot Cycle?

  • Opus_723
  • · Replies 1 ·
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1

Graduate Discrepancy in my calculations

  • lilrex
  • · Replies 1 ·
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1