Engineering

• Bridges and tunnels: Why are there so many different types of bridge? Which one works best?
• Buildings: Why don't buildings fall down?
• Carburetors: How does a car engine mix fuel and air to produce power efficiently?
• Car engines: How do they convert liquid fuel into a trip to the mall?
• Clockwork: How can you power things with a windup spring and gears?
• Cranes: How do they work? Why don't they topple over?
• Cranks and cams: What's the best way to turn rotary motion into back-and-forth, push-pull motion?
• Diesel engines: Why are diesel engines more efficient than gasoline engines?
• Drilling: What's the science behind drilling holes? What are drills made of?
• Eddy-current brakes: How can you stop a high-speed train with a magnet?
• Engines: How does an engine convert fuel into mechanical power?
• Flywheels: How can you store energy for hours on end with nothing but a wheel?
• Gas springs: How does a fluid-filled pipe support your office chair or the trunk lid of your car?
• Gears: How can we make wheels turn faster or with more force?
• Hydraulics: How do liquid-filled pipes allow one person to lift or move incredibly heavy loads?
• Jet engines: How fast is air travelling when it roars out of the back?
• Pneumatics: How can you apply force or shift energy with pipes full of compressed air?
• Pumps and compressors: How do you move liquids and gases from place to place?
• Springs: How do springs store energy and why is that helpful?
• Stirling engines: Why are Stirling engines among the most efficient engines of all?
• Steam engines: If we love them so much, why don't they still pull trains today?
• Turbines: How can you get useful energy from a moving liquid or gas?
• Valves: What stops fluid leaking from a pipe or controls how quickly it moves through?