Articles on Aircraft

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Perth air traffic control tower. As a pilot flies towards the destination, the air traffic control tower sends an interrogation signal. The aircraft automatically responds with a series of short pulses that let air traffic control know the identity of the plane and its altitude. © Copyright Airservices Australia

Curious Kids: what’s the history of aircraft squawk codes and how do they work?

Secondary radar is an important tool in the control of aircraft traffic, and helps make air travel safe. It was developed during dangerous times.
Moviegoers familiarize themselves with the joystick that will allow them to interact with the film ‘I’m Your Man’ during its premiere on Dec. 16, 1992. AP Photo/Richard Harbus

From Smell-O-Vision to Astrocolor, the film industry’s biggest innovation flops

Sound, color and special effects transformed the moviegoing experience. These inventions decidedly did not.

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