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Undergrad Oxidizing gas to cheat a fuel-cell based breathalyzer?

  • gonello
  • · Replies 3 ·
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3

Graduate Overcome Entropy: Understanding Mixing & Separation of Gases

  • lilrex
  • · Replies 7 ·
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7

Undergrad Energy Distribution of EM Radiation ~ One Photon

  • kcodon
  • · Replies 6 ·
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6

Undergrad Relation between entropy and pressure at constant temperature

  • bill nye scienceguy!
  • · Replies 7 ·
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7

Graduate Entropy change of an irreversible process

  • supermesh
  • · Replies 2 ·
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2

Graduate Boltzmann distribution vs. Distribution of energy

  • timmy1234
  • · Replies 4 ·
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4

Undergrad Conservation of Angular Momentum from Newton's third law

  • vjraghavan
  • · Replies 5 ·
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5

Graduate Temperature Change for N Gas in 5L Bulb in Space

  • duvix
  • · Replies 25 ·
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25

Graduate (radiation) monpoles vs. dipoles

  • lion8172
  • · Replies 1 ·
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1

Graduate Could electron movement influence the vibrational energies that define heat?

  • aims_
  • · Replies 8 ·
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8

Undergrad Newton's Third Law - Weak Form Application

  • DaTario
  • · Replies 6 ·
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6

Undergrad Freezing @ 500 degrees centigrade

  • miss photon
  • · Replies 4 ·
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4

Undergrad The Significance of the Mechanical Equivalent of Heat

  • miss photon
  • · Replies 5 ·
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5

High School Physics of Dry Air: Is a Space Heater Drying the Air?

  • hmmmm
  • · Replies 1 ·
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1

Graduate Energy conservation and thermodynamics

  • Demystifier
  • · Replies 20 ·
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20

Graduate Reversibility and Carnot cycle

  • LTP
  • · Replies 1 ·
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1

Graduate Does the temperature of a body depend upon the frame of the observer?

  • miss photon
  • · Replies 15 ·
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15

High School Newton's 1st Law: Motion & Astronauts

  • aikawax
  • · Replies 6 ·
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6

Graduate Entropy and information: Do physicists still believe so?

  • LTP
  • · Replies 4 ·
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4

Undergrad Does Thermal Expansion Affect the Enclosed Volume or the Shell Material Volume?

  • miss photon
  • · Replies 4 ·
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4

Undergrad Can 9kJ Qh/s at 375K Be Converted to 4kJ Ql/s at 225K?

  • Sefour
  • · Replies 1 ·
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1

High School Real time help-Which has faster thaw time?

  • BurntToast
  • · Replies 10 ·
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10

Graduate How Does Thermal Effect Influence Wave Velocity in Piezoelectric Materials?

  • Turtle Yuan
  • · Replies 1 ·
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1

High School Understanding Exergy: The Basics of Energy and its Applications

  • pixel01
  • · Replies 4 ·
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4

High School Understanding Newton's Third Law: Why Does a Rocket Go Up?

  • noagname
  • · Replies 9 ·
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9

High School Heat and thermal energy question

  • kaweezah
  • · Replies 1 ·
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1

Graduate Heat and objects approaching the speed of light

  • jism411
  • · Replies 9 ·
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9

Graduate Does Removing a Partition Increase Entropy in a Gas Box?

  • LTP
  • · Replies 8 ·
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8

High School Heating water - microwaves vs kettle?

  • dst
  • · Replies 7 ·
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7

Undergrad Entropy Change in Pumped Air: Increase or Decrease?

  • erjkism
  • · Replies 5 ·
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5

Graduate Understanding Gas Flow through Tubes: Choking at the Speed of Sound

  • RKT
  • · Replies 15 ·
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15

Graduate Understanding Brillouin's Entropy Decrease

  • LTP
  • · Replies 5 ·
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5

High School Why Does Water Move on a Hot Surface Instead of Evaporating Immediately?

  • The_Z_Factor
  • · Replies 8 ·
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8

Graduate What does b mean in this context?

  • LTP
  • · Replies 2 ·
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2

How do you construct an OVEN THERMOMETER?

  • annagrace
  • · Replies 11 ·
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11

Undergrad Do Incandescent Solids Follow Stefan's Law?

  • neelakash
  • · Replies 3 ·
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3

High School Dryness Fraction: Dry or Wet Steam?

  • bill nye scienceguy!
  • · Replies 4 ·
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4

Undergrad Why Did Temperatures Drop Despite Identical Sunny Skies?

  • pivoxa15
  • · Replies 6 ·
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6

Undergrad Why is Infrared Light Considered Heat in CO2 Lasers?

  • Mephisto
  • · Replies 10 ·
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10

Undergrad Coal Fire Pockets: Is Temperature Higher?

  • neelakash
  • · Replies 7 ·
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7

Graduate Investigating the Dependence of SoS on Pressure & Temperature

  • RKT
  • · Replies 1 ·
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1

Graduate Stefan's Law And Definition Of Temperature

  • neelakash
  • · Replies 1 ·
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1

Undergrad Filling small compressed air bottle with a big one

  • khoopes01
  • · Replies 1 ·
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1

High School Newton's 2nd Law: F=ma - Does Object A Feel Force?

  • udar subedi
  • · Replies 4 ·
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4

High School Why Do Objects Move Despite Equal and Opposite Reactions?

  • Dirtyhand
  • · Replies 4 ·
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4

Undergrad Convert radio frequency to temperature

  • spune
  • · Replies 3 ·
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3

Undergrad How to Determine if Temperature Increase is Due to Work or Heat?

  • pardesi
  • · Replies 5 ·
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5

Undergrad Radiator Maxumum Heat Transfer

  • V Mad
  • · Replies 11 ·
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11

Graduate Temperature Limit of Matter: Can it Be Reached?

  • jobyts
  • · Replies 1 ·
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1

Undergrad Rate of Butter Reaching Room Temp: Need Help!

  • sphynx
  • · Replies 3 ·
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3

Graduate Entropy change with angular momentum

  • lou_boumian
  • · Replies 6 ·
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6

High School Understanding 1233K on the Kelvin Scale

  • mibrejes
  • · Replies 1 ·
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1

Graduate Quantum Effects on Energy Levels: The Relationship between Heat and Work

  • cp7970
  • · Replies 7 ·
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7

Undergrad Room Temperature Changes With Refrigerator: Warmer or Colder?

  • MrXow
  • · Replies 6 ·
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6

High School Why Did My Pub's Cellar Temperature Rise During a Sudden Cold Snap?

  • mufcdiver
  • · Replies 6 ·
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6

Undergrad Can Thermal Imagers See Through Aluminised Cloaks?

  • Dirk Bruere at NeoPax
  • · Replies 8 ·
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8

Graduate Estimating Complexity of Images: Entropy & World Perception

  • LeoYard
  • · Replies 2 ·
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2

Unfrozen freezy pops a bewitched frozen treat

  • phubaba
  • · Replies 5 ·
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5

High School The temperature of a satellie's surface

  • pixel01
  • · Replies 2 ·
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2

Question about Ice in a drink cooler

  • qtp
  • · Replies 8 ·
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8

Undergrad What Keeps the Universe Dynamic Instead of Fixed?

  • Skhandelwal
  • · Replies 29 ·
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29

Undergrad Temperature Amplifier: Ideas & Input Requested

  • zytrahus
  • · Replies 21 ·
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21

High School Heat Transfer: Conduction vs. Convection vs. Radiation

  • jobyts
  • · Replies 11 ·
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11

Undergrad How Do I Calculate the Cost Savings on My Electricity Bill for Running My AC?

  • Quadruple Bypass
  • · Replies 13 ·
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13

Undergrad Calculating the Temperature Needed to Move a Piston in a Sealed Cylinder

  • npau8648
  • · Replies 2 ·
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2

High School Can a Fan Increase Temperature in a Closed Room?

  • bassplayer142
  • · Replies 18 ·
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18

High School Forehead Thermometer: How Liquid Crystals Work

  • The Worry Boy
  • · Replies 2 ·
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2

High School What is Newton's First and Second Law?

  • justx007
  • · Replies 1 ·
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1

Graduate Entropy and expanding universe

  • geonat
  • · Replies 11 ·
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11

Undergrad Can a Stirling Engine Withstand Intense Solar Heat without a Coolant?

  • douglasg14b
  • · Replies 13 ·
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13

Undergrad How Can Space Be Cold in a Vacuum Despite Molecular Vibration?

  • bassplayer142
  • · Replies 44 ·
2
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44

High School Understanding Newton's Third Law

  • Lloyd
  • · Replies 17 ·
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17

Undergrad Hot Objects Don't Always Accelerate - Puzzling Physics Explained

  • CarrotHole
  • · Replies 3 ·
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3

Undergrad Where Can I Find a Thermal Physics Q&A Forum for My Class?

  • solidus_E
  • · Replies 1 ·
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1

Undergrad Is Newton's Third Law always true in every scenario?

  • treborly45
  • · Replies 5 ·
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5

High School Please explain why the freezer is the top compartment in a fridge

  • gamecube999
  • · Replies 3 ·
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3

Undergrad Heating Time of Compressed Air

  • s.p.q.r
  • · Replies 4 ·
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4

Graduate Can Entropy Be Reversed?: A Reflection on Isaac Asimov's 50-Year-Old Story

  • chronie
  • · Replies 2 ·
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2

Undergrad The given power of a heated body

  • C_Ovidiu
  • · Replies 4 ·
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4

Graduate Can a Closed System at Absolute Zero Experience Thermodynamic Change?

  • BosonJaw
  • · Replies 4 ·
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4

High School Convert PSI to Pascals & Compare to Atmospheres

  • Big Drop
  • · Replies 4 ·
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4

How useful are thermometers if they only show their temperature?

  • gdpudasaini
  • · Replies 4 ·
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4

Undergrad Carnot Cycle help - Engine temp reservoirs

  • Big Drop
  • · Replies 1 ·
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1

Undergrad Real vs Ideal Gas: Pressure & Temperature Effects

  • s.p.q.r
  • · Replies 1 ·
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1

Graduate Black Body / Emission difference ?

  • HarryWert
  • · Replies 8 ·
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8

High School Vacuum Insulation Cup: Best Way to Hold 1L of Boiling Water

  • akahmed
  • · Replies 10 ·
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10

Keep Cool in Summer: AC + 3 Portable Fans

  • JimmyJockstrap
  • · Replies 13 ·
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13

Graduate Heats generated during atmospheric entry

  • Loren Booda
  • · Replies 5 ·
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5

Graduate Is there any way for the entropy to increase in an closed adiabatic sy

  • Dili
  • · Replies 1 ·
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1

Undergrad Question on Thermal Siphoning velocity?

  • derekpearcy
  • · Replies 2 ·
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2

High School How Does Infrared Radiation Relate to Heat?

  • bassplayer142
  • · Replies 1 ·
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1

Undergrad Will A Temperature Change Caused by Fire Line Crack Mirror?

  • rody084
  • · Replies 2 ·
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2

Graduate Heat propagation in radiating surface

  • Jairo Amaral
  • · Replies 4 ·
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4

Undergrad Heat Transfer Q: Will Water Reach Equilibrium?

  • kayjaygee_13
  • · Replies 10 ·
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10

Undergrad Understanding the PV^(gamma) = C Equation in Adiabatic Processes and Ideal Gases

  • mune
  • · Replies 9 ·
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9

Graduate Heat Capacity & Density: Math Relation Explored

  • LeoYard
  • · Replies 2 ·
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2

High School Concentrating sunlight to creat different extream temperatures

  • douglasg14b
  • · Replies 11 ·
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11

Graduate Adiabatic cooling vs. Joule-Thomson effect

  • One128
  • · Replies 2 ·
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2

Undergrad Can Someone Explain How the Second Law of Thermodynamics Opposes the First Law?

  • kthouz
  • · Replies 3 ·
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3

High School Discovering the Father of Thermodynamics and the Laws of Energy Conversion

  • ellebeee
  • · Replies 1 ·
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1