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Citations

  • http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/heatra.html

Dec. 11:

http://www.appliance.net/2008/how-food-cooks-conduction-convection-and-radiation-411

http://chefsblade.monster.com/training/articles/213-food-science-basics-heat-transfer?page=3

http://www.physicsclassroom.com/class/thermalP/Lesson-1/Methods-of-Heat-Transfer

Dec 12:

What cooking appliances use radiation?

Conduction

Dec. 10:

http://www.physicsclassroom.com/class/thermalP/Lesson-1/Methods-of-Heat-Transfer

http://www.smartkitchen.com/resources/cooking-terms/r/radiaition-cooking

http://www.cookingforengineers.com/article/209/Heat-Transfer-and-Browning-Foods

http://webspace.webring.com/people/ey/yummyphysics/

http://ffden-2.phys.uaf.edu/webproj/212_spring_2014/Mi_Chin_Yi/Michin_Yi/conduction.html

http://www.physics4kids.com/files/thermo_transfer.html

http://ouchmath.wordpress.com/2011/01/25/the-physics-of-cooking/

What is Conduction?

  • The coils of an electric toaster
  • Microwave ovens
  • The heat you feel from stove tops and grills when you hold your hand over them

Transfer of heat from one object to

another or from one molecule to another.

- Iron Rod

- Metal

- Heat Conductors

- Blanket

- Insulators

Microwave Ovens

  • Waves penetrate food to stir molecules
  • Friction of molecules heats up food

A video about microwave ovens

How does heat transfer?

- Atom and molecule collisions

- Loosely bound electrons

Conclusion

Without physics, cooking wouldn't be possible!

The Physics of Cooking

  • Radiation
  • No exchange of mass to transfer heat
  • Conduction
  • Transfers heat between touching objects
  • Convection
  • Transfers heat by the movement of fluids.

Cooking is based upon the three

elements of thermodynamics:

Radiation

What cooking methods & appliances use Conduction?

What is it?

  • Heat transfer by electromagnetic waves
  • Carries heat from origin to area around it
  • No mass has to be exchanged
  • Infrared and microwave

1. Frying pan on stove top

2. Boiling water

What cooking methods use radiation?

  • Grilling and broiling, radiation comes from below the food
  • Baking and roasting uses primarily convection, but a little radiation

Conduction of Cooking

Conduction, convection, and Radiation

How does convection apply to cooking?

What is convection?

Convection above a hot surface occurs because hot air expands, becomes less dense, and rises.

  • process of heat transfer from one location to the next by the movement of fluids.
  • the moving fluid carries energy with it
  • flows from a high temperature location to a low temperature location.

What's the difference between a regular oven and a convection oven?

Examples of Convection

  • the convection oven will heat our pot faster because the air in the convection oven is circulated forcefully
  • Boiling/heating water on a stove
  • Hot air balloon
  • Fireplace to heat up your home
  • Air conditioner in a car

The Physics of Cooking

Austen, Helena and Tiffany

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