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[GT] ‘복사 냉각’을 활용한 에너 |
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최근 스웨덴의 린셰핑 대학교(Linkoping University) 연구팀은 수동 복사 냉각을 통해 열을 방출하는 정도를 전기적으로 조정함으로써 온도를 조절할 수 있음을 증명해냈다. |
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Always Day One: How |
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| Alex Kantrowitz |
ǻ | Portfolio |
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The Outlook for HDTV |
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In the late 1990s, when the first television channels began offering high-definition television, few U.S. households had HDTV sets to receive the signals, and it’s no wonder: Shows in high-def were scarce, and the average price of an HDTV set was $3,147. |
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The Radio Frequency |
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In the last few years, the electromagnetic spectrum has quietly become a critical part of contemporary life. It enables you to communicate with mobile phones, use remote controls, tune in TV stations, pop corn in the microwave, open your car door without a key, listen to radio stations, and surf the Internet when you’re sipping coffee at Starbucks. |
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The Female Career "O |
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To the surprise of many, large numbers of highly qualified American women are dropping out of mainstream careers. In fact, more than half of the women in the class of 1981 from Stanford University left the workforce at some point. |
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