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  • so my favorite class in high school was physics

    所以我高中最喜歡的課是物理課

  • they open my eyes to the facts

    他們讓我看到了事實

  • that we can understand and predict so

    我們可以理解和預測

  • much of the everyday world around us

    大千世界

  • using math and equations so today I want

    使用數學和方程,所以今天我想。

  • to revisit the classic high school

    重溫經典高中

  • physics egg drop competition where you

    物理學雞蛋下降的競爭,你

  • have to build some sort of contraption

    搞鬼

  • around an egg to make sure it doesn't

    蛋的周圍,以確保它不。

  • crack when it hits the ground originally

    原地踏步

  • I wanted to do a bunch of research and

    我想做大量的研究和

  • testing to find the single best way to

    測試,以找到單一的最佳方式來

  • win the competition every time but what

    屢戰屢勝

  • I found out with that each competition

    我發現,每次比賽

  • sort of has different rules in some

    頗有異曲同工之妙

  • you're not allowed to use popcorn or

    你不允許使用爆米花或。

  • parachutes and in others you win if your

    降落傘,而在其他地方,你贏了,如果你的。

  • contraption is the smallest or the

    器件是最小或最多

  • lightest or both so i'm going to show

    最輕的或兩者都有,所以我將表明

  • you five super easy options and then

    你的五個超級簡單的選項,然後

  • we'll talk about why each one works

    我們將討論為什麼每一種方法都有效

  • let's go crack some eggs

    煎蛋去吧

  • okay so let's start with the popcorn

    好吧,讓我們開始與爆米花

  • ball the basic principles that you put

    球的基本原則,你把

  • your egg in the middle of a box that

    你的雞蛋在一個盒子的中間,

  • contains some kind of cushioning

    含有一定的緩衝作用

  • materials such as bubble wrap or packing

    氣泡紙

  • peanuts or popcorn personally I think

    花生或爆米花 我個人認為...

  • this one is the most boring but it works

    這是最無聊的,但它的工作

  • and that's why every shipping company

    這也是為什麼每家船運公司

  • ever shipped this way i'm using a ball

    曾經運送這種方式,我使用一個球。

  • here because it's more weight efficient

    在這裡,因為它的重量效率更高

  • in a box where you have unnecessary

    框中,你有不必要的

  • cushioning in the corners plus the

    在角落裡的緩衝,加上

  • stretchiness of the ball will help

    球的伸縮性將有助於

  • absorb assembly energy

    吸收能量

  • the moment of truth and we have an

    時候,我們有一個

  • intact egg before I show you the other

    在我給你看另一個完整的蛋之前

  • four ideas let's talk about the science

    四個想法,讓我們來談談科學

  • behind landing with an uncracked egg so

    後面的落地與一個未裂開的雞蛋,所以...。

  • the starter you dropped your egg is up

    你掉了雞蛋的起動器已經啟動了

  • high and it's stationary so it has

    高,而且它是靜止的,所以它有。

  • potential energy which is the energy

    勢能

  • associated with height so these red

    與身高有關,所以這些紅色

  • blocks represent the potential energy

    塊代表勢能

  • and the higher I go the more blocks of

    而我越往上走,越多的塊

  • energy I start and then as the egg fall

    我開始的能量,然後作為雞蛋下降

  • that potential energy is converted to

    勢能轉化為

  • kinetic energy which is the energy of

    動能是

  • speed so you start up high and every

    速度,所以你開始高,每

  • single block is over here as potential

    單塊在這裡作為潛在的

  • energy but as you start to fall and fall

    但當你開始跌倒,跌倒

  • faster and faster every single block

    越來越快,每塊

  • comes over here is kinetic energy or

    過來的是動能或

  • speed and now your egg is about to

    現在你的雞蛋即將

  • impact the ground and have all this

    衝擊地面,並有這一切

  • energy in the form of speed that got to

    以速度形式存在的能量,到了

  • go somewhere now this broom represents

    這把掃帚代表

  • the standing energy that holds an

    蓄勢待發

  • eggshell together it makes it hard so

    蛋殼在一起會使它變硬,所以

  • the way to think about this is when your

    思考這個問題的方式是當你的

  • egg hits the ground do you introduce

    雞蛋落地你介紹

  • more energy than the binding energy of

    的結合能。

  • the molecule holding the hard eggshell

    卵殼分子

  • together at any point you're going to

    一起在任何時候你都會

  • break at that point so the question that

    在這一點上,所以問題是

  • becomes what can we do to keep our

    變成了我們能做什麼來保持我們的

  • blocks below the broom because simply

    掃帚下面的塊,因為只要

  • put below the broom your egg is safe

    臥薪嚐膽

  • anything above the broom and your egg is

    上樑不正下樑歪

  • busted well there's two things we can do

    破產了,有兩件事我們可以做的

  • the first is that we can make this pile

    第一,我們可以把這堆東西做成

  • of green blocks not as tall this is why

    綠化磚的高度沒有那麼高,這就是為什麼

  • no matter what your contraption is to

    無論你的裝置是什麼

  • protect the egg if your rules allow it

    守株待兔

  • you should make a parachute the bigger

    你應該做一個大的降落傘

  • the better and it does not have to be

    越多越好,而且不一定要

  • fancy this is like old-school army guys

    花式這就像老派軍隊的傢伙

  • style just cut up

    儼然

  • bag little bit of string little bit of

    袋子 一點點繩子 一點點

  • tape and just looking at this you can

    錄像帶,光看這個你就可以

  • see the difference a parachute could

    看得出,降落傘可以

  • make so the second thing you can do is

    所以,你可以做的第二件事是

  • not to remove any green blocks by

    不去除任何綠色塊,通過

  • reducing your speed but to spread them

    減少你的速度,但傳播他們

  • out so if we say left to right as our

    所以如果我們說從左到右作為我們的

  • time axis the more we could stretch out

    時間軸越長,我們就越能延伸出

  • this impact event the more we can lower

    衝擊事件,我們就越能降低

  • that high energy spike and this is a

    高能量的峰值,這是一個

  • cool way to think about any two objects

    思考任何兩個對象的酷方法

  • impacted the longer the duration of the

    影響的時間越長

  • impact the more you can spread out that

    影響力越大,你就越能傳播這種

  • force so stuff doesn't break so for

    力,這樣東西才不會壞,所以

  • example this is the point of car air

    例如這就是汽車空氣的意義

  • bags instead of your head hitting the

    袋子,而不是你的頭撞上

  • steering wheel and stopping near

    朝令夕改

  • instantaneously it stretches out the

    瞬間伸出

  • impact force overtime so you don't get a

    衝擊力加班,這樣你就不會得到一個

  • quick spite that exceeds the broom line

    恨鐵不成鋼

  • for your skull this is exactly why long

    你的頭骨,這正是為什麼長

  • jumpers prefer to land it's sand and not

    跳樓的人更喜歡落在它的沙子上,而不是。

  • on asphalt and why parkour runners will

    在瀝青路面上,為什麼跑酷選手會有這種感覺?

  • always roll after a big jump it's all

    一蹦三尺高,一跳三丈遠

  • about defusing the force over a longer

    關於在較長的時間內化解力

  • period of time so what does that mean

    時期

  • for our egg contraptions it surely is

    對於我們的雞蛋裝置,它肯定是

  • something to keep in mind because it can

    需要注意的事情,因為它可以

  • make it more intuitive for example to

    讓它更直觀,例如

  • see why putting your egg in the middle

    知道為什麼把雞蛋放在中間了吧

  • of a jar of peanut butter which is a

    一罐花生醬,這是一個。

  • popular and not a very good idea isn't

    膾炙人口,不亦樂乎

  • as good as putting your egg in the

    就像把雞蛋放進

  • middle of a popcorn ball okay back to

    中間的爆米花球 好吧,回

  • the bridge

    橋上

  • you

  • so a lot of people like to build

    所以很多人都喜歡建造

  • contraptions out of straws and in some

    用吸管做的裝置,在一些

  • competitions that's all you have to work

    競爭,這是你所有的工作。

  • with how you configure your straws

    與您配置吸管的方式

  • depends a little bit on how stiff they

    取決於他們的硬度

  • are the good folks at wendys have fairly

    是好鄉親們在Wendys有相當的

  • stiff straws which means I didn't have

    僵硬的吸管,這意味著我沒有。

  • to use quite as many so my idea was to

    所以我的想法是

  • take six like three inch long straws and

    拿六個像三英寸長的吸管和

  • build a regular triangular pyramid and

    構建一個規則的三角形金字塔和

  • then put the egg in the middle and then

    然後把雞蛋放在中間,然後

  • I took two of the Wendy straws and join

    我拿了兩根溫迪吸管,然後加入。

  • them together to sort of make a mega

    他們在一起,有點像一個巨大的

  • straw and I use this wide tape to help

    稻草和我用這個寬膠帶幫助

  • prevent it from buckling and then I made

    防止它彎曲,然後我做了

  • six of those mega straws and simply

    六根超大吸管,然後簡單地。

  • taped one to each edge of the pyramid so

    粘貼在金字塔的每一個邊緣上,以便

  • the main point here is that there are no

    這裡的主要觀點是,沒有

  • straws pointing directly at the egg when

    吸管對準雞蛋時

  • it impacts the ground the force goes up

    撞擊地面的力量會上升

  • the stiffness path through the straw I

    通過稻草的剛度路徑 I

  • saw a ton of examples online where the

    在網上看到很多例子,其中

  • straw was actually pointed at the a we

    稻草其實是對著我們

  • could create a puncture load in our case

    在我們的情況下,可能會產生一個穿刺載荷

  • we have this pyramid so all the loads

    我們有這個金字塔,所以所有的負載

  • path next to the egg so you don't get

    路徑旁邊的雞蛋,所以你不會得到

  • that primary impact three two one so

    那主要影響 三二一 所以

  • you'll notice we've got a couple of

    你會注意到,我們已經得到了一對夫婦的

  • broken pieces but that's okay because it

    但這沒關係,因為它

  • took energy to make those breaks and

    花了精力去做這些突破和

  • that sort of protect the shell of the

    某種程度上來說,是保護殼的

  • egg and receiving that energy so success

    蛋,並接受這種能量,所以成功

  • ok so our egg finally broke but it took

    好了,我們的雞蛋終於打破了,但它花了

  • about 20 tries and you can see there's a

    大約20次嘗試,你可以看到有一個。

  • lot of busted straws here all in all it

    滿嘴跑火車

  • was pretty resilient yeah

    是相當彈性的是啊

  • so this one is a throwback to my NASA

    所以這個是一個回溯到我的美國宇航局

  • roots in 2004 the emmy our Rovers landed

    2004年的艾美獎,我們的流浪者登陸了

  • on Mars using giant airbags and even

    在火星上使用巨大的安全氣囊,甚至

  • though Mars has one-third the gravity of

    雖然火星的重力只有美國的三分之一。

  • Earth I figured it would still work I

    地球我想還是可以的,我

  • started by cushioning the egg in four

    首先將雞蛋墊在四個

  • little balloons that I barely filled up

    勉強填滿的小氣球

  • and then I blew up bigger balloons and

    然後我吹起了更大的氣球,並。

  • then just tied it all together with some

    然後只是把它綁在一起用一些

  • string and tape and then if there's any

    繩子和膠帶,然後如果有任何的

  • gaps in coverage you can just tape a

    覆蓋面的缺口,你可以只用膠帶

  • balloon directly to the stream you just

    氣球直接到你剛才的流

  • tied around in addition to the balloons

    綁著氣球

  • extending the impact time this design

    延長這種設計的影響時間

  • benefits from a large cross-sectional

    從大的橫斷面中獲益

  • area relative to his weight so in a

    面積相對於他的體重,所以在

  • sense it becomes its own parachute of

    它成為自己的降落傘

  • course if your rules allow it you should

    當然,如果你的規則允許,你應該

  • still throw an additional parachute on

    再加個降落傘

  • it anyways stop it from

    阻止它

  • I'm 2012 we landed another rover on Mars

    我是2012年,我們又在火星上登陸了一個探測器。

  • called curiosity but this one was too

    稱為好奇心,但這個太

  • big to use airbags so we had to have a

    大到無法使用安全氣囊,所以我們必須有一個。

  • power to send pretty much like a jet

    輸送功率幾乎像噴氣式飛機

  • pack so I wanted to pay tribute to

    所以我想向

  • curiosity I got to work on her for seven

    好奇心驅使我在她身上工作了7天

  • years and at first I was thinking like

    年,一開始我是這樣想的

  • model rocket but without gyroscopes and

    火箭模型,但沒有陀螺儀和火箭模型

  • control algorithms things can get pretty

    控制算法的事情可能會變得非常

  • unsafe pretty quickly so I thought of

    很快就不安全了,所以我想到了

  • this idea where I use balloons that

    這個想法,我用氣球,

  • could deflate and then they would

    可以放氣,然後他們將

  • provide upward thrust like before

    上行下效

  • landing but it now and as ridiculous as

    但它現在和荒唐的是

  • this might seem it's actually not a

    貌似如此,實則不然

  • violation for most rules because you're

    違反大多數規則,因為你

  • not touching it once you've released it

    一手遮天

  • the fact is most competitions are using

    事實上,大多數比賽都在使用

  • rules that were written before you could

    條條框框

  • go on amazon and buy a toy drone for

    去亞馬遜上買一個玩具無人機,為

  • less time 50 bucks

    少了50塊錢的時間

  • intact it I save this one for lassence

    完好無損 我把這個留著用吧

  • I've never seen anyone do it and it's

    我從來沒有見過任何人這樣做,它的

  • probably my favorite in terms of its

    可能是我的最愛,因為它的

  • simplicity but you want to buy fewer

    簡單,但您希望購買更少的

  • balloons and you need and then just pop

    氣球,你需要,然後只是彈出。

  • them until you get to the point where

    他們,直到你得到的點,其中

  • you're just under neutrally buoyant and

    你只是在中性浮力下,並

  • you can see at the bottom I've just got

    你可以看到在底部我剛剛得到了。

  • this little protector of the egg you

    你這個雞蛋的小保護神

  • don't have to get fancy but I use those

    不用花哨的,但我用這些

  • little animal balloons that it seems to

    小動物氣球,它似乎

  • work pretty good this one weighs in at a

    工作相當不錯,這一個重量在A

  • couple ounces so it is a strong option

    幾盎司,所以它是一個強有力的選擇。

  • if your competition favors lighter

    如果你的競爭者喜歡更輕的

  • contraptions

    裝置

  • so which one is the best again it sort

    所以哪一個是最好的再次它排序

  • of depends on the rules of your

    的取決於你的規則

  • competition in some cases being smallest

    競爭在某些情況下是最小的

  • gets you the most points so I'm thinking

    讓你得到最多的分數,所以我想。

  • in airwolf all the way if being like

    在空天狼的所有方式,如果是喜歡的

  • wait is the most important then go with

    等是最重要的,那麼就選擇

  • the helium up house method and if you're

    氦氣上房法,如果你是。

  • Angus needs to survive then you can pick

    安格斯需要生存,那麼你可以選擇

  • any one of these but the most important

    非此即彼

  • part is to have fun and experiment and

    部分是有樂趣和實驗和

  • learn something and then to dominate

    學而優則仕

  • your competition yeah you guys are good

    你的競爭對手 是的,你們是好的

  • no that's all right it's all right and

    不,這是所有權利 它的所有權利,並

  • now you're on YouTube thanks for

    現在你在YouTube上謝謝

  • watching if you learn something or if

    看你是否學到了什麼,或者是否

  • you didn't learn something or if you're

    如果你沒有學到什麼東西,或者你是

  • a mammal then you should subscribe is

    哺乳動物,那麼你應該訂閱是

  • your blood warm you got a four-chambered

    血氣方剛

  • heart welcome aboard

    熱烈歡迎

so my favorite class in high school was physics

所以我高中最喜歡的課是物理課

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B1 中級 中文 美國腔 雞蛋 吸管 氣球 降落傘 稻草 競爭

1st place Egg Drop project ideas- using SCIENCE

  • 23 1
    huong 發佈於 2017 年 10 月 09 日
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