See how research and development help the frame design of modern bicycles

Encyclopædia Britannica, Inc.

Don't let film photography become a lost art.

Media Editors: Lauren Sims , Kira Helm

Contunico © ZDF Studios GmbH, Mainz

A Boeing 747 undergoing a D-check, an extensive maintenance inspection in which much of the aircraft is disassembled and examined.

NASA/Dryden Research Aircraft Movie Collection

A U.S. Air Force KC-135A Stratotanker taking off during a test of experimental winglets, mid-1970s.

Encyclopædia Britannica, Inc.

On June 12, 1979, the Gossamer Albatross became the first human-powered plane to cross the English Channel. This video shows the plane on its way from England to France, accompanied by engineers and paramedics ready to rescue the pilot if he were to crash.

Encyclopædia Britannica, Inc.

Learn about surface tension and compare the surface tensions of different liquids, including water, alcohol, mercury, and soap bubbles.

© MinutePhysics (A Britannica Publishing Partner)

Gravity, air molecules, an airplane's wings, engines—all of these factors, and more, perform a complex dance involving lift, thrust, drag, and gravity that enables an airplane to fly.

Encyclopædia Britannica, Inc.

Every minute, multiple liters of air are cycled through your lungs.