My 7 year-old nephew showed me with pride the "telephone" he had just made from a string and two tin cans.
I pulled out my iPhone and said, "That's nice, but... look at the phones that kids your age are making in China!"
SeasatIn 1978, Seasat, an experimental U.S. ocean surveillance satellite was launched. Each day, Seasat made 14 orbits of the Earth, and in a period of 36 hours was able to monitor nearly 96% of the oceanic surface. The measurement equipment on board was able to penetrate cloud cover and report measurements such as wave height, water temperature, currents, winds, icebergs, and coastal characteristics. Although it operated for only 99 days before a power failure, it had already shown the viability of the use of a satellite for collecting oceanic data. The information collected was shared with scientists and was used to aid transoceanic travel by ships and aircraft. |
