logo

Video encyclopedia

Flashback calendar

Felix Baumgartner jumps from over 128, 000 ft

Felix Baumgartner is best known for jumping to Earth from a helium balloon in the stratosphere. Doing so, he set world records for skydiving an estimated 39 km (24 mi), reaching an estimated top speed of 1,357.64 km/h (843.6 mph), or Mach 1.25. He became the first person to break the sound barrier without vehicular power relative to the surface on his descent.

Montreal begins the operation of its underground Metro

The Metro, operated by the Société de transport de Montréal, was inaugurated in 1966, during the tenure of Mayor Jean Drapeau. It has expanded since the 1960s from 26 stations on three separate lines to 68 stations on four lines totalling 69.2 kilometres in length.

Supersonic flight

Supersonic travel is a rate of travel of an object that exceeds the speed of sound (Mach 1). For objects traveling in dry air of a temperature of 20 °C (68 °F) at sea level, this speed is approximately 343 m/s, 1,125 ft/s, 768 mph, 667 knots, or 1,235 km/h. Speeds greater than five times the speed of sound (Mach 5) are often referred to as hypersonic. Flights during which only some parts of the air surrounding an object, such as the ends of rotor blades, reach supersonic speeds are called transonic. This occurs typically somewhere between Mach 0.8 and Mach 1.23.

Roll film is patented

American inventor and businessman George Eastman patented paper-strip photographic film. His invention made photography available to the masses. It also enabled the development of motion picture film and cinematography. Four years later Eastman founded the Eastman Kodak Company, referred simply as Kodak.

Anniversaries of the (in)famous