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A Boeing 747 weighs 400,000 pounds and flies six miles above the Earth. Almost nobody on board wonders why it does not fall. The Bernoulli
June 5, 2026
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A Boeing 747 weighs 400,000 pounds and flies six miles above the Earth. Almost nobody on board wonders why it does not fall. The Bernoulli
Every evening the sky turns orange and almost nobody asks why. The orange sunset cause is a live physics demonstration involving Rayleigh scattering, atmospheric filtering,
Why does a straw look bent in water, and why do sunsets turn orange? Learn how refraction, scattering, and diffraction explain everyday light.
Why do spinning tops not fall? Discover how angular momentum, torque, and precession help a spinning top stay balanced, explained in simple language.
Charles De Lisi, PhD.
Metcalf Professor of Science and Engineering
Boston University
College of Engineering
Boston, MA