今天 我们的实验将向她传声 Today, our experiment is to send a voice to her,
她远在天边 who waits far away.
我们将会用到线绳和纸杯 We’ll be using string and paper cups.
一个纸杯电话 A paper cup phone!
我们将把线绳拉伸到136米 We’ll stretch the string over the distance of 136 meters.
她听见了吗 Did she hear it?
促进科学认知的非凡实验 Spectacular experiments to sharpen your sense of science.
展现自然现象 揭露自然法 Making natural phenomena visible to reveal the rules governing them.
今天 今天您将见证一个大型实验 Today, you’ll witness a grand experiment
大科学实验 and discover science
一个纸杯电话 Oh, a paper cup phone.
我听见了 I can hear it!
声音是怎样通过纸杯电话传播的呢 How is a voice carried through the paper cup phone?
让我们看看它的使用情况 Let’s take a look at it in use. (Sound voice)
它在震动 Hey, it’s vibrating.
线绳也在震动 The string is vibrating too.
另一个纸杯也在震动 The other cup is vibrating too!
声音的震动传到纸杯底部 The vibration of the voice is transmitted to the bottom of the cup,
穿过线绳 引起另一个纸杯震动 passed along the string, and causes the other cup to vibrate.
因此声音可以从一端传到另一端 Thus a voice can reach from one end to the other end.
今天的任务 Mission
使用纸杯电话 传话给另一端的公主 Use the paper cup phone to reach the princess on the other end!
这位公主在哪 And where is this princess?
在这儿 自然博物馆 Here, in the Science Museum.
馆如其名 The name says it all,
在这里你可以看到最新的科学研究 it’s where you can see the latest scientific research.
电话的一端在一楼大厅里 One end of the phone will be at the hall on the first floor,
那里有一个大型地球模型 where there is a large globe.
线绳将被拉伸至三楼的展厅 The string will be pulled up to the exhibition space on the 3rd floor,
那里有机器人和一些很酷炫的展品 where there are robots and other cool things.
线绳继续穿过展厅和出口 The string will thread through the exhibition space and out the exit.
然后一直向上 Then the string will go all the way up
穿过中庭 延伸到七楼 through the atrium space that stretches to the 7th floor.
这是距离最长的一段 This is the part covering the longest distance,
而且很难搭设线绳 and is very difficult to thread the string through.
公主将静候于穹顶之下 The princess will be in the dome,
它坐落于这层楼的后方 situated at the back of the floor.
话筒两端的总距离为136米 The total distance from one receiver to the other is 136 meters.
真远啊 Quite a distance!
纸杯电话真的能远距离传声吗 Can the paper cup phone really carry the voice that far?
长距离通话开始了 Begin the long-distance conversation!
首个目标是将声音传到三楼 The first goal is for the voice to reach the 3rd floor.
距离约为10米 The distance: about 10 meters.
线绳被垂放下来 The string is hung down,
现在线绳连接好了 The string is attached now!
你好 能听见我说话吗 “Hello Hello Can you hear me?”
她听见了吗 Did she hear that?
我听不见 I can’t hear that.
你好 能听见我说话吗 “Hello Hello Can you hear me?”
我听见了 听起来和实际声音有出入 I hear it! It sounds different from the actual voice!
现在 让我们把线绳延伸到展区 Alright, let’s now stretch the string to the exhibition space.
我们要确保线绳是紧绷的 We make sure that the string is kept taut.
什么 听不见 为什么呀 What, no good? But why?
线绳触碰到了护栏 The string is touching the handrail.
是因为这个吗 Is that the reason?
一条蓝色的线绳横跨大厅 A blue string is stretched across the hall.
红色的电话线 The red string of the telephone
将绕在蓝色的线绳上 will be hooked around the blue string.
你好 能听见我说话吗 “Hello Hello Can you hear me?”
我听见了 Alright! I heard that!
你好 能听见我说话吗 “Hello Hello Can you hear me?”
如果电话线搭在另一条线绳上 If the telephone string is hooked around string,
声音就可以传播 the sound can be transmitted.
让我们把线绳拉得更远一些 Okay, let’s stretch out the string some more!
我们用蓝色线绳来改变方向 We use the blue string to change direction.
距离初始地点25米 25 meters from the starting point.
下一个目标是 The next goal is
三楼展厅的出口 the exit of the exhibition space on the 3rd floor.
你好 能听见我说话吗 “Hello Can you hear me?“
你好 能听见我说话吗 “Hello Can you hear me?”
我听见了 但不如之前的声音响亮 也许 I heard it! But not as loudly as before, perhaps…
接下来 线绳将被一直拉伸到七楼 Next, the string is stretched all the way up through the 7th floor.
这也太远了 要怎样把线绳拉伸到那里呢 It’s so far away, how will we get the string over there?
我们改变线绳的方向 We change the direction of the string,
然后将它和从七楼垂下来线绳连起来 and hook it up to the string hanging down from the 7th floor.
线绳细得几乎看不见 The string is really hard to see!
将线绳拉伸到七楼花费了三十分钟 It took 30 minutes to get the string up to the 7th floor.
距离起始地点110米 110 meters from the starting point.
声音能传到那里吗 Will the voice reach the goal?
他们等待了很长时间 Ah, they’ve been kept waiting forever!
你好 能听见我说话吗 “Hello Hello Can you hear me?”
我能听见 但音量降低了一些 I can hear it, but the volume has gone down quite a bit.
接下来是终极挑战 Next is the final challenge.
从一楼到穹顶房间的距离为136米 136m from the 1st floor to the dome.
我们就要成功了 We’re almost at the goal!
线绳被仔细地拉伸 The string is carefully stretched out,
工作人员小心谨慎以免 as rangers take caution not to break it.
穹顶的下等待的是 At the end of the dome awaits…
是公主本人 It’s her…in person!
纸杯电话的另一端 The other end of the paper cup phone
终于是公主本人 has finally reached the princess,
距离起始地点136米 136 meters from the starting point.
她会听到声音吗 Will the voice reach her?
最后一次尝试 Guys, this is the last time.
就是现在 我们一定能成功 This is it! We’re gonna make this work.
你好 能听见我说话吗 “Hello Can you hear me?”
你好 能听见我说话吗 Hello Can you hear me?”
声音很微弱 但我能听见 It’s faint, but I can hear it!
我能听见 谢谢你 “Yes Yes thank you”
她能听见吗 Can he hear her voice?
成功了 It’s a success!
在这项试验中 In this experiment,
我们得知 we learned that
纸杯电话能将声音传播136米远 a paper cup phone can carry a voice 136 meters away.
我们还得知 We also learned that
当电话线架设在线绳上 when the telephone string is hooked against string,
声音可以继续传播 the sound continues to travel,
但当它接触到其他物体时 but when it is against a different object,
声音传播中断 the sound is cut off.
对了 公主是来自哪个星球 By the way, what planet’s princess is she?
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