Conceptual Physics Alive: Heat Radiation

Conceptual Physics Alive: Heat Radiation includes a digital video and questions set with answers. Observe Paul Hewitt teach in a classroom with real students, using engaging demonstrations and artwork. In this video, the temperature dependence of radiation frequencies is related to the greenhouse effect. How sunlight spreads differently over parts of the earth helps explain the warmth of the equatorial regions and the coolness of polar regions. Segment length: 32 minutes Heat Radiation Includes: Review of heat transfer by radiation. Radiant energy: Everything is emitting: everything is absorbing. Hewitt shows a wooden box with a hole in it. The hole looks black, while the interior is white. Blackness of eye pupils. Twice-as-hot coffee story to illustrate the concept of absolute zero. Review of the Fahrenheit and Celsius temperature scales. Introduction of the Kelvin scale. The "Celsius-the-Village-Tailor" story. Newton's law of cooling; Rate of cooling- delta T. Example of a house '