Search results
Results from the WOW.Com Content Network
William C. Brown demonstrated in 1964, during Walter Cronkite's CBS News program, a microwave-powered model helicopter that received all the power it needed for flight from a microwave beam. Between 1969 and 1975, Bill Brown was technical director of a JPL Raytheon program that beamed 30 kW of power over a distance of 1 mile (1.6 km) at 9.6% ...
Re-narrated Horizon episode, first aired in the UK in 1972. [4]We give you a behind-the-scenes look at the making of a nature film. Oxford Scientific Films Unit shows how it tackles such problems as filming a wood wasp laying its eggs inside trees, the hatching of a chick and the courtship rituals of the stickleback.
The particles are shown to wobble faster than predicted by the Standard Model, hinting at a possible fifth fundamental force. [369] [370] 11 August. The rise in photosynthesis rates around the world caused by the increase of carbon dioxide is found to have slowed dramatically in the 21st century, as the atmosphere has grown drier. [371] [372]
[362] [363] Humans often combine the different forms (for example, music videos). [364] Other entities that have been described as having artistic qualities include food preparation, video games, and medicine. [365] [366] [367] As well as providing entertainment and transferring knowledge, the arts are also used for political purposes. [368]