Seesaw_Saga《跷跷板趣闻》
简述
应用科学类纪录片，Discovery Channel 频道 2009 年出品，是 DC MythBusters 系列其中之一。
封面
影片信息
官方网站
http://dsc.discovery.com/tv/mythbusters/
影片原始规格:
- 中文片名 ：跷跷板趣闻
- 中文系列名：DC 流言终结者
- 英文片名 ：Seesaw Saga
- 英文系列名：DC MythBusters
- 电视台 ：Discovery Channel
- 地区 ：美国
- 主演 ：亞當沙維奇(Adam Savage)
傑米海納曼(Jamie Hyneman)
多利貝樂奇(Tory Belleci)
凱利拜倫(Kari Byron)
史考特查曼(Scottie Chapman)
葛蘭特今原(Grant Imahara)
克莉絲蒂查柏林(Christine Chamberlain)
- 语言 ：英語
- 时间 ：约 47 分钟
- 版本 ：TV
- 发行时间 ：2009
影片内容介绍
剧情简介
| Myth statement | Status | Notes |
|---|---|---|
| A skydiver whose parachute fails to open can hit the high end of a playground seesaw, landing on his feet, and launch a child on the low end safely up to the roof of a 7-story building. | Busted | Adam and Jamie constructed a steel seesaw and placed a dummy on one end whose weight matched that of an average 6-year-old girl. To approximate the effect of a skydiver hitting the high end at terminal velocity, they calculated the proper combination of weight and height and dropped several water-filled barrels. The impact crushed the seesaw, ruptured the barrels, and launched the dummy to a height of 20 feet (6 m). The Build Team was brought in to determine the terminal velocity, based on one specific type of skydiving suit and the diver’s body position. From several jumps, they determined that the diver could reach a maximum speed of 122 miles per hour (196 km/h) in a vertical position. Meanwhile, Adam and Jamie designed and built a seesaw that could effectively deliver the energy of the falling skydiver to the girl without buckling. Adam did some small-scale tests to correlate drop height and maximum launch height, and also to follow the girl’s trajectory in the air. Next, the Build Team did some bungee jumping to find a way to accelerate the diver to terminal velocity without having to drop him from several hundred feet up. Their solution: attach the ends of a heavy-duty bungee cord to the diver and the ground, haul the diver up using a crane, and release him so that the cord would snap him downward at high speed. A wetsuit filled with an alginate/water mixture and dressed in a skydiving suit was used to represent the diver. The team set up the equipment at Mare Island Naval Shipyard, using the heavy-duty bungee cord and a pair of guide wires to make sure the diver dummy would hit the target accurately, and found that they could indeed reach 122 miles per hour. The girl dummy was outfitted with “shock watch” stickers to measure the forces exerted on it, and three drops were carried out. The results: |
- 1st: diver hit slightly off-center and burst on impact; girl flew 55 feet (17 m) up and 70 feet (21 m) laterally, but suffered enough force to kill her
- 2nd: sand-filled inner tube used for diver; girl hit the guide wires
- 3rd: girl flew 130 feet (40 m) up at an angle (equivalent of 200 feet or 60 meters straight up), but experienced a g-force of 42 g which would cause serious injury even before she hit the ground
Based on the need for a super-strong seesaw and the injuries inflicted on the girl, the team declared the myth busted.
截图
Image:DC_MythBusters_cover.jpg Image:Seesaw_Saga_screen1.jpg Image:Seesaw_Saga_screen2.jpg Image:Seesaw_Saga_screen3.jpg
参考信息
相关的纪录片
暂无
相关领域
| 内容 自然科学类 | 物理学 | 古典物理 |
|---|
网路消息
- 维基百科：流言终结者
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Category:片名 Category:Discovery Channel Category:DC MythBusters Category:2010 Category:3. 自然科学类 Category:3.3 物理学 Category:3.31 古典物理 Category:缺翻译