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This is Scientific American's 60-Second Science. I'm Christopher Intagliata. Got a minute? Engineers are always plugging away to get better energy efficiency out of our products -- like cars that guzzle less gas or light bulbs that burn brighter on f
Engineers are always plugging away to get better energy efficiency out of our products -- like cars that guzzle less gas or light bulbs that burn brighter on fewer watts. But even if we replaced all today's bulbs with energy-sipping LEDs, the world m
Science and Technolgy. 科技。 Visible-light communication. 可见光通信。 Tripping the light fantastic. 与光共舞。 A fast and cheap optical version of Wi-Fi is coming. 一个高速而廉价的光学Wi-Fi即将问世。 AMONG the many new
今天我们要学的词是coup。 Honduran President Manuel Zelaya was ousted in a coup, 洪都拉斯总统塞拉亚在政变中被赶下台。It was the first successful military coup against a president in Central America since the Cold War, 这是冷
Science and technology 科学技术 Visible-light communication 可见光通信 Tripping the light fantastic 与光共舞 A fast and cheap optical version of Wi-Fi is coming 一个高速而廉价的光学Wi-Fi即将问世 AMONG the many new gadgets u
音乐咖啡厅:Shayne Ward - Close to Close 相关介绍:真诚友善的微笑,帅气阳光的脸庞,柔情健康的情歌全球3,000,000张专辑销量,全球15白金奖(15 global platinum awards),这就是他,Shayne Ward,一出道就感