Tập
Modern Marvels: Episode 2
Tóm tắt
From Alexander Graham Bell’s crude creation, to today’s high-speed wireless networks, we’ll look into the past, present and future of the telephone. We’ll visit the AT&T archives to see how the very first telephone boxes wired together with telegraph cables have evolved into vast wireless networks. Enter into the inner workings of Los Angeles County’s 911 emergency dispatch center, as well as explore advancements made by Lucent/Bell Labs in phone-embedded GPS technology. With telephone privacy issues making headlines, witness a demonstration of how easy it can be for someone to illegally tap your phone. We’ll also look at a technology developed by NASA-Ames that might one day allow people to converse by merely thinking what they want to say.
Chi tiết
- Phim bộ
- Modern Marvels
- Mùa
- Mùa 4
- Tập
- Tập 2
- Ngày phát sóng
- 1996-09-15
- Thời lượng
- 44 min
Thông tin tập
Episode 2 là tập 2 trong Season 4 của Modern Marvels. Tập này phát sóng ngày 1996-09-15. Thời lượng là 44 min.
Tập trước / tập sau
Tập 1
In 1912, a headlight-maker and an auto magnate built the first cross-country road to spur the demand for new cars; 70 years and $125 billion later, the highway system had grown to 42,000 miles. Rare photographs and interviews tell the incredible story of the “paving of America”.
Tập 3
Many rivers quenched the thirst of millions in the American west and around the world. Without these aqueducts, some of the earth’s largest cities would turn into gigantic ghost towns. Their technology has been in use for over two thousand years. But today these engineering marvels cost billions of dollars to build, requiring thousands of men to toil for years on end. Aqueducts have made some men famous and others fabulously wealthy. In Los Angeles one man’s vision took one hundred thousand men to complete and a great city was truly born. In Northern California the most famous conservationist of our time waged the political fight of his life in an attempt to save one of nature’s most spectacular valleys from San Francisco’s demand for more water.
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