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Undergrad Why Does Blood Boil in a Vacuum?

  • pivoxa15
  • · Replies 24 ·
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24

Undergrad Building an Egg Incubator Box: Calculating Heat-up Time

  • ecid
  • · Replies 13 ·
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13

Undergrad Compressing nitrogen and its characteristics

  • Pengwuino
  • · Replies 6 ·
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6

Graduate Residual Entropy: Do All Particles Have It at Absolute Zero?

  • Delzac
  • · Replies 8 ·
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8

High School Why Does a Bunsen Burner Flame Stay at the Top?”

  • GiTS
  • · Replies 3 ·
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3

Graduate Solving Statistical Physics Equations of Motion for N-Particle Systems

  • eljose
  • · Replies 2 ·
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2

Undergrad What is Entropy and How Does It Vary in Different Systems and Reactions?

  • southafrican wizard
  • · Replies 1 ·
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1

Graduate Noncentral potential and Newton third law

  • yukawa_2006
  • · Replies 4 ·
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4

Undergrad How to calculate the size of an explosion?

  • Buckwheat Jones
  • · Replies 9 ·
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9

Graduate Absolute entropy, definition, measurement, practical use

  • lalbatros
  • · Replies 5 ·
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5

Undergrad Can an Air-to-Air Intercooler Cool Air Below Ambient Temperature?

  • daz59
  • · Replies 13 ·
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13

Graduate Newton's Third Law, Gravity, and the Planck Length

  • kmarinas86
  • · Replies 3 ·
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3

Undergrad Thermocouple Errors in Temperature Controller

  • ColdFusion85
  • · Replies 13 ·
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13

Graduate Temperature Below 0 K: Is Absolute Zero Possible?

  • whoelsebutme
  • · Replies 20 ·
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20

High School Perpetuum Mobile: Robert Boyle's Self-Flowing Flask

  • Nissan
  • · Replies 3 ·
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3

Undergrad Does the 3rd Law of Thermodynamics Prove the Impossibility of Absolute Zero?

  • ArielGenesis
  • · Replies 1 ·
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1

High School Melting Ice: A Comparison of Air and Water Environments

  • Micko
  • · Replies 7 ·
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7

High School Where does the Earth lose its energy from solar?

  • Pengwuino
  • · Replies 8 ·
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8

High School Heat Form Changes: How Does Heat Travel?

  • daniel_i_l
  • · Replies 1 ·
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1

High School The Mpemba Effect: Hot Water Freezing Faster Than Cold

  • Poncho
  • · Replies 3 ·
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3

Undergrad Mass: Creation & Destruction - What Does it Mean?

  • ThomasFuhlery
  • · Replies 1 ·
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1

Graduate Sneaker heat diffusion through walking

  • charlesworth
  • · Replies 1 ·
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1

Undergrad Thermal Conductivity & Heat Transfer Coeff: Relationships

  • xharville
  • · Replies 1 ·
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1

Undergrad Air saturation level vs temperature and pressure

  • Mr-gone
  • · Replies 2 ·
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2

Undergrad Calculating Heat Transfer of Photovoltaic Panels

  • xharville
  • · Replies 2 ·
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2

High School Why Does Evaporation Cool You Down If It Uses the Sun's Energy?

  • daniel_i_l
  • · Replies 26 ·
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26

High School Heat Physics: Are Energy Levels Equal in Different Objects?

  • touqra
  • · Replies 6 ·
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6

High School Questions about Newton's third law

  • Byrgg
  • · Replies 60 ·
3
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60

Undergrad Hot food = more energy for your body?

  • pivoxa15
  • · Replies 31 ·
2
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31

Graduate How Do Entropy Changes Differ Among Gases, Liquids, and Solids?

  • pivoxa15
  • · Replies 9 ·
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9

Graduate Measuring Heat Generated by Tumbling Barrels for Beach Studies

  • mfor040
  • · Replies 8 ·
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8

Undergrad Calculating Entropy of a System: What to Do?

  • pivoxa15
  • · Replies 6 ·
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6

Undergrad Is a Vertical Increase in Pressure Possible in the Pump Stage of a Steam Engine?

  • pivoxa15
  • · Replies 4 ·
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4

Undergrad Is There a Universal Unit for Measuring Gas Compressibility?

  • Mattius_
  • · Replies 7 ·
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7

Undergrad K (thermal conductivity) value question.

  • lawtonfogle
  • · Replies 7 ·
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7

Undergrad Blackbody Radiation and the Incandescent Light Globe

  • uart
  • · Replies 1 ·
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1

Undergrad Radiowaves & Heat: Why Don't They Grill Us?

  • Helicobacter
  • · Replies 6 ·
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6

Graduate What is the ideal mixture ratio of oxygen to aluminum for a rocket fuel?

  • foulbr3@yahoo.com
  • · Replies 1 ·
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1

Undergrad Uncovering the Correlation of Wire Creep and Temperature

  • silver-rose
  • · Replies 2 ·
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2

Undergrad Enthelpy so commonly described only in constant pressure situations?

  • pivoxa15
  • · Replies 1 ·
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1

Graduate Triple Point of Water: Hail Rain Explained

  • pivoxa15
  • · Replies 1 ·
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1

High School Rubber Bands and Energy Dissipation

  • pallidin
  • · Replies 7 ·
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7

Graduate Arrow of time/ entropy probability

  • Tsunami
  • · Replies 17 ·
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17

Undergrad Fire and Smoke: Understanding the Phenomenon

  • dimensionless
  • · Replies 3 ·
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3

Undergrad Carnot and renkine steam cycle

  • Micko
  • · Replies 6 ·
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6

Graduate Is the Work Done on a System Positive When There is Compression?

  • eep
  • · Replies 1 ·
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1

High School A pool with vapor over it at night

  • endeavor
  • · Replies 4 ·
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4

Graduate Earth as an energy source & sink

  • dsky
  • · Replies 1 ·
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1

High School Can Energy Be Created or Destroyed According to the Law of Conservation?

  • lurksalot
  • · Replies 8 ·
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8

Undergrad Question about the ideal gas law

  • korneld
  • · Replies 5 ·
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5

Graduate Explaining the Perpetuum Mobile Paradox

  • ivan
  • · Replies 2 ·
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2

High School High pressure temperature rise and smoke

  • motioncity
  • · Replies 10 ·
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10

Undergrad Seebeck Coefficeints: Definition, Significance & Thermocouple Image

  • chound
  • · Replies 1 ·
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1

Graduate Discussing Solid State Cooling & Entropy

  • ferretgr
  • · Replies 1 ·
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1

Graduate Question entropy rises over time right?

  • skywolf
  • · Replies 3 ·
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3

Graduate Highest possible temperature = Planck temperature?

  • Lisa...
  • · Replies 3 ·
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3

Undergrad Why Does Water Show Maximum Density at 277K?

  • shaviprem
  • · Replies 4 ·
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4

High School Max Temperature: Speed of Light

  • fehlzunden
  • · Replies 9 ·
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9

Undergrad Is the Universe Becoming More Ordered Despite the Law of Entropy?

  • alias25
  • · Replies 8 ·
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8

Graduate Uncovering Residual Radiation from Ancient Atomic Bomb Detonations

  • Line
  • · Replies 2 ·
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2

Graduate Does Entropy Change When the Universe Contracts or Expands?

  • Serene_Chaos
  • · Replies 9 ·
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9

Graduate Meaning of formula from statistical physics

  • broegger
  • · Replies 3 ·
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3

High School Burning Paper on Open Fires - What are the Red Hot Threads?

  • wolram
  • · Replies 2 ·
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2

Undergrad Space Probes & Slingshot Effect: Energy Source & Violation of Laws?

  • simon009988
  • · Replies 4 ·
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4

Scientists achieve highest temp. on Earth - over 100x Sun's core

  • neutrino
  • · Replies 19 ·
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19

Graduate Statistical Entropy: How Can Zero Entropy be in View of the Second Law?

  • touqra
  • · Replies 8 ·
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8

Undergrad Thermodynamics: gas for stirling engine + liquid with high density

  • The Crazy Noob
  • · Replies 3 ·
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3

Undergrad Confused about statistical entropy and thermodynamic entropy

  • touqra
  • · Replies 1 ·
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1

Undergrad Kitty's Guide to Heat Engines, Refrigerators, & Air Conditioners

  • misskitty
  • · Replies 3 ·
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3

Graduate Is the 3rd law of thermodynamics necessary?

  • Feynmanfan
  • · Replies 4 ·
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4

Graduate Statistical Mechanics to Thermo for Isothermal Isobaric Ensemble

  • JM1
  • · Replies 2 ·
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2

Undergrad Phase Change: What is actually going on?

  • brianparks
  • · Replies 2 ·
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2

High School Linear Expansion: Why Not Volume Expansion?

  • Milind_shyani
  • · Replies 4 ·
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4

Graduate Equilibrium=homogeneity of the intensive parameters?

  • mma
  • · Replies 19 ·
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19

Undergrad Is There a Limit to the Speed of Energy Transfer?

  • darkar
  • · Replies 5 ·
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5

Undergrad Kelvin & Joule Link: Energy Unit Relationship?

  • TSN79
  • · Replies 1 ·
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1

Undergrad Preventing Gas Expansion: Molar Specific Heats at Constant Pressure & Volume

  • chound
  • · Replies 2 ·
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2

Does evolution contradict 2nd law of thermodynamics?

  • lwymarie
  • · Replies 12 ·
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12

Graduate Comparing Entropy: Equally Distributed Universe vs. Black Hole Universe

  • Blahness
  • · Replies 6 ·
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6

High School Why does a metal door knob feel colder that a wooden one on a cold day?

  • Stalker23
  • · Replies 9 ·
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9

Undergrad What Happens if Newton's Third Law is Violated?

  • Mt. Nixion
  • · Replies 8 ·
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8

Undergrad How much heat from a magnifying glass?

  • fizixx
  • · Replies 7 ·
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7

Undergrad What if you build a big vacuum sphere

  • magi
  • · Replies 14 ·
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14

Undergrad Does Thermal Expansion Occur Uniformly in All Directions?

  • Cyrus
  • · Replies 12 ·
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12

High School Difference between convection and radiation

  • TSN79
  • · Replies 5 ·
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5

Graduate Temperature Variations of Ideal Gas in Gravitational Field

  • mma
  • · Replies 4 ·
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4

Undergrad Room Full of Hydrogen: Fusion or Entropy?

  • skywolf
  • · Replies 6 ·
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6

Graduate Can Hankel functions explain the radiation of small antennas?

  • lisawoods
  • · Replies 3 ·
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3

Undergrad Calculate Heat Loss from Copper Sphere of 8cm Diameter

  • EIRE2003
  • · Replies 4 ·
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4

Undergrad Can a Perpetuum Mobile Exist According to the Laws of Conservation of Energy?

  • Mattara
  • · Replies 13 ·
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13

High School What Temperature Does a Lamp Need to Reach to Melt a Room?

  • dervast
  • · Replies 5 ·
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5

Undergrad Debating Creationist: Seeking Physicist to Clarify Thermodynamics Conflict

  • Nooj
  • · Replies 17 ·
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17

High School Comparing Temperatures: Is It Logical?

  • pivoxa15
  • · Replies 22 ·
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22

High School Why does cold air go to the bottom of the room?

  • daniel_i_l
  • · Replies 16 ·
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16

Undergrad Can Radiative Heat Transfer Change the Temperature of an Object in a Vacuum?

  • quasi426
  • · Replies 5 ·
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5

Graduate Efficiency of the Stirling Cycle: Examining the Debate

  • Vegeta
  • · Replies 5 ·
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5

High School Energy Conservation: Criteria and Examples

  • madking153
  • · Replies 2 ·
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2

Undergrad Understanding Enthalpy Change in Cooled, Moist Air

  • TSN79
  • · Replies 1 ·
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1

Undergrad Calculate Flame Height: Material and Output Hole Size

  • dyiu9632
  • · Replies 4 ·
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4

Undergrad Understanding Evaporative Temperature in Heat Pumps: Explained

  • TSN79
  • · Replies 1 ·
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1