Multimedia Gallery
Displaying 421 - 430 of 534
Artifact
Sextant, made by Jesse Ramsden, last quarter of 18th century.
Artifact
One of six ships of the U.S. Exploring Expedition, the Porpoise sailed around the world between 1838 and 1842.
Artifact
The components pictured here are just part of the Ship’s Inertial Navigation System (SINS) used to steer submarines such as the USS Alabama.
Illustration
Sidereal time, or “star time,” is based on Earth’s rotation relative to the stars, rather than to the Sun.
Artifact
Information about the ship’s position, speed, heading, and attitude were constantly transmitted from the Ship's Inertial Navigation System (SINS).
Artifact
A modified IBM Selectric typewriter connected to a control unit provided input and output for the system computers.
Photograph
Navigator for 1919 John Alcock first non-stop transatlantic flight (with crash landing), St. Johns, Newfoundland to Clifden, Galway, Ireland
Photograph
1928 first trans Arctic flight from Point Barrow, Alaska to Spitsbergen, Norway in a Lockheed Vega
Illustration
Snakes, South America (Callirhinus patagoniensis, Dendrophis prasinus)
