효과맨 - 리얼 민방위 싸이렌

효과음넣어만든영상 댓글로 평가좀...

효과음 넣은영상 처음으로 올려요.

재난현장 구조요청을 위한 손목시계

재난현장시에 구조요청을 원할하게 할수 있도록 제작된 손목시계형 구조용품입니다. 체온을 이용하여 전기를 생산, 배터리에 저장시켜 LED와 경보음...

어디서 레이저총 쏘는 소리가.....ㅋㅋㅋㅋㅋ

어디서 레이저총 쏘는 소리가.....ㅋㅋㅋㅋㅋ - 0분 6초 -

A nationwide blackout drill saves energy

Anchor: The first nationwide blackout drill was held on June 21 to prepare for possible power shortages. It saved about 5 million kilowatts of electricity, as the power was cut in pre-designated...

Three Mile Island Nuclear Accident Documentary Film

The Three Mile Island accident was a partial nuclear meltdown which occurred at the Three Mile Island power plant in Dauphin County, Pennsylvania, United States on March 28, 1979. More on this...

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