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Oh, hi, everyone! You're just in time.
哦，嗨，大家好，你们来得正及时。
I've been working on some new experiments, and I'm so excited to show you my latest one: I can make this ordinary magnet float in the air!
我一直在做一些新的实验，很高兴向你们展示我的最新实验：我可以让这块普通的磁铁悬在空中！
Thanks, Squeaks! I'm excited, too. Let's get started.
谢谢，吱吱！我也很激动。那么咱们开始吧。
Alright, first, we take this marker, and we stick it to the table. I'm using some modeling clay to make it stick.
好的，首先，我们把这支记号笔粘在桌子上，我用了一些粘土让它粘在上面。
Next, I take one magnet ring, and slide it down to the bottom of the marker.
然后，我拿了一个磁环，让它滑到记号笔的底部。
Now, very carefully, I take the next magnet ring, and lower it down the marker, until… Presto! A floating magnet!
现在，小心地，我再拿一个磁环，让它沿着记号笔往下，知道……看！磁铁悬浮起来了！
Squeaks, it's not exactly a magic trick. It's more like… a magnets trick — because magnets can do all sorts of amazing things!
吱吱，确切说这不是魔术，这更像是……磁铁小把戏，因为磁铁可以做各种神奇的事情！
Magnets are special objects made with metals.
磁铁是用金属制成的特殊物体。
I bet you have some in your classroom or your home — like, maybe stuck to a refrigerator or whiteboard, or in a toy.
我敢打赌大家的教室里或家里肯定会有一些磁铁，比如粘在冰箱或白板上的，或者在玩具里。
And the important thing about magnets is, they can make forces. A force is a push or a pull.
磁铁的重要之处在于，它能产生力。力是推力或拉力。
And magnets can push or pull on things made with many kinds of metal, like paper clips or nails.
磁铁能够推或拉由多种金属制成的物体，比如回形针或者钉子。
That's why you sometimes see magnets stuck to refrigerators.
这就是为什么有时我们会看到磁铁粘在冰箱上。
They can pull so hard on the metal inside the refrigerator that they'll stick to it!
它们会用力拉住冰箱里的金属，所以会粘在上面！
We call things magnets pull on, like refrigerators, magnetic.
我们称物体具有磁性，比如冰箱具有磁性。
And get this: Magnets don't even need to be touching something to push or pull on it! That's one of the things that makes them so cool.
还有一点：磁铁甚至不需要接触物体就能推或拉它们！这也是它们如此之酷的原因之一。
I agree! Magnets are really fun to play with!
我同意！玩磁铁真的很有趣！
Now, testing to see if different things are magnetic can be fun by itself, but really interesting things happen when you put two magnets together.
现在，测试不同的东西是否具有磁性本身就很有趣，但当你把两块磁铁放在一起时，真正有趣的事情发生了。
Check this out: Sometimes, the magnets pull on each other, so they stick together really hard.
看看这个：有时候，磁铁会相互吸引，所以它们会紧紧粘在一起。
But now… look what happens when I flip this magnet over.
但是现在，看看我把磁铁翻过来会发生什么。
I can't push them together! It's just like my floating magnet experiment:
我没法儿把它们放到一块儿了！就像我的悬浮磁铁实验一样：
the two magnets won't touch. It almost feels like they're pushing against each other!
两块磁铁无法接触，感觉就像他们在互相推彼此！
Great question, Squeaks. Why does this happen?
问得好，吱吱，为什么会这样？
Well, magnets have two sides. We call them the north pole and the south pole.
磁铁有两面，我们称它们为北极和南极。
Exactly! It's a lot like the North and South Pole that you see on a map of the Earth!
没错，很像你在地图上看到的北极和南极！
In fact, Earth is a giant magnet. But that's a different story — one we'll talk about soon.
其实，地球是一块巨大的磁铁。但那是另一个故事，我们很快就会讲到。
When I hold the north pole of one magnet and the south pole of another magnet near each other, each magnet makes a really strong force, and the two pull together.
当我握住一个磁铁的北极和另一个磁铁的南极彼此靠近时，每个磁铁都会产生很强的力，两个磁铁就会拉在一起。
We say that they attract each other. They actually pull on each other pretty hard, so I'm being careful that they don't pinch my fingers.
我们就说“磁铁相互吸引”。它们相互拉得很用力，所以我很小心，以免它们夹到我的手指。
Now, when I hold two north poles together, the opposite happens: The magnets push against each other and won't stick!
现在，当我把两个北极放在一起时，相反的情况就会发生：磁铁相互推动，不会粘在一起！
In other words, we say that the magnets repel each other.
换句话说，我们说“磁铁相互排斥”。
So, different poles attract each other, and same poles repel each other.
所以，不同的极相互吸引，相同的极相互排斥。
Hey, maybe that's why they say opposites attract!
嘿，或许这就是人们说“异性相吸”的原因！
You've got it, Squeaks! In my experiment, the two magnets on the marker are repelling each other.
你说对了，吱吱！在我的实验中，记号笔上的两块磁铁相互排斥。
This one has its north pole facing up, and this one has its north pole facing down, so the two push against each other.
这一块的北极是朝上的，这一块的北极是朝下的，所以两者相互推。
Right now, the side on the top is a south pole, so if I want to add another floating magnet ring,
现在，上面的一边是南极，所以如果我想再加一个悬浮磁环，
which side should I put facing the other magnets? North or south? South pole? Let's try it!
我应该把哪一边面对着其他磁环呢？北还是南？南极吗？咱们试试吧！
You were right! Nice work, buddy. The matching sides are facing each other, so the magnets repel each other and float.
你是对的！真棒。匹配的两面是相对的，所以磁铁相互排斥，能悬浮起来。
You can use magnets to do all kinds of fun experiments!
大家可以用磁铁做各种有趣的实验！
You could try this floating magnet ring experiment at home, or try something new!
大家可以在家里尝试这个悬浮磁环实验，或者尝试做一些新的实验！
Maybe you could use attracting magnets to hold together sheets in a blanket fort. Or, you could try to balance things on repelling magnets.
也许你可以用磁铁把床单粘在一起做成毯子堡垒。或者，你可以试着用磁铁来平衡物体。
Aw, Squeaks, that's such a fun idea! We could use magnets to put some art up on the fridge! We can start our own magnet art gallery.
啊，吱吱，这个主意很有趣！我们可以用磁铁把一些画粘在冰箱上！我们可以开办自己的磁铁画廊。
Let us know what you do with magnets! If you want to send us a note, you can ask a grown-up to help you e-mail us at kids@scishow.com.
大家可以告诉我们你们是怎么使用磁铁的！如果你想给我们发短信，可以让成年人帮你发电子邮件到kids@scishow.com。
And if you want to explore more science with Squeaks and me, hit the subscribe button. For now, we'll see you next time, here at The Fort.
如果你想和我和吱吱一起探索更多科学，请点击订阅按钮。我们下期见，在城堡等你哦。
