The history of RADAR and Doppler RADAR.
The history of the radio.
Charles Jenkins invented a mechanical television system called radiovision and claimed to have transmitted the earliest moving silhouette images on June 14, 1923.
The history of railroads and railroad related innovations. See - Also First Steam Powered Locomotives
King Munjong invented a rain gauge for measuring rainfall.
Intel's 1103 was the world's first available dynamic RAM chip.
The history of shaving time line - safety razors, mechanical razors, electric razors, razors for women and more.
Early American pioneers had only a sickle or a scythe with which to cut down and harvest their grain before reapers were invented.
In 1831, Cyrus McCormick invented the first commercially successful reaper, a horse-drawn machine that harvested wheat.
The history of this famous kitchen appliance.
The first television remote control called "Lazy Bones" was invented in 1950 by Zenith.
The first respirator was called the "iron lung". It was invented by Philip Drinker and Louis Agassiz Shaw in 1927.
The history of restaurants and famous restaurant chains.
The history of the revolver.
The history of roads and asphalt and the invention of traffic management.
Introduction to robotics and few famous first robots. See Also - Definition of a Robot
, Photo Gallery
Any of a variety of weapons systems that deliver explosive warheads to their targets by means of rocket propulsion.
Robert Goddard invented liquid-fueled rockets and a control mechanism for rocket apparatus. See Also - Timeline
, Rockets: Timeline II
, Rockets: How They Work
Earl Bascom invented and manufactured the rodeo's first one-hand bareback rigging.
Scott and Brennan Olsen invented rollerblades.
John Miller was the 'Thomas Edison" of rollercoasters.
The history of roller skates began as a way to ice skate on land.
Alfred Neustadter invented the Rolodex.
Hires first sold commercial root beer to the public in 1876 at the Philadelphia Centennial Exhibition.
The strange story of rubber - also the history of rubber stamps, rubber erasers, rubber balloons and more.
There is only one correct answer and 43 quintillion wrong ones to the most populaRr puzzle in history.
Theodore Harold Maiman received a patent for the Ruby Laser System.
Count Rumford (aka Benjamin Thompson) invented the Rumford fireplace in 1796.
If you cannot find what you want by invention.