Sub-Topics Flywheels Simple Machines Also Try Physics Lesson Plans Airships (UCLA News - Brown) Describes lighter-than-air aircraft. 1-02 Lists Aviation - Types of Airplanes (About.com - Bowles) Provides information by type of plane. 3-01 Electric Cars (Awesome Library) Provides sources of information on electric cars and other electric vehicles. 1-02 Fuel Cell Power (Awesome Library) Provides sources of information. 1-02 Hydroelectric and Wave Power (Awesome Library) Provides sources of information. 1-02 Inventors (Awesome Library) Provides sources of information. 1-02 Patents and Trademarks (Awesome Library) Provides sources of information. 1-02 Quadcycles (Awesome Library) Provides sources of information. 1-02 Recumbent Bicycles (Awesome Library) Provides sources of information. 1-02 Solar Power (Awesome Library) Provides sources of information. 1-02 Tricycles and Tricycling (Awesome Library) Provides sources of information. 1-02 Wind Power (Awesome Library) Provides sources of information. 1-02 Papers Airships - Causes of the Hindenberg Airship Crash (UCLA News - Brown) Describes recent research that shows that the chemicals on the skin of the aircraft, not the hydrogen, caused the fire. 1-02 Airships - Hindenberg Airship Crash (Hitter) Describes the zeppelin blimp that crashed when it arrived in the USA. Discusses possible causes of the explosion that set the airship in flames. Editor's Note - Recent research as shown that chemicals on the skin of the aircraft, not the hydrogen, caused the fire. 1-02 Airships - Hindenberg Airship Crash (Widner) Describes the radio broadcast of the crash of the Hindenberg airship, an event that is believed to have stopped airship travel. 1-02 Commuting Alternatives (Awesome Library) Provides an analysis of options and then gives recommendations. 1-02 Sewing Machines - How Sewing Machines Work (HowStuffWorks.com) Shows how a sewing machine works. 2-02 Projects Radios - Building an AM Radio (Xtal Set Society) Provides instructions and diagrams for building a complete crystal radio in a Quaker Oats box. 1-02

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