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  • This episode of Scishow is brought to you by

    這一集的 Scishow 是由 贊助播出。

  • As far as I know there hasn't been a study to confirm this, but I'm pretty sure water damage is the leading cause of panic among smartphone users worldwide.


  • One minute, you're having a great day, and the next, your phone is sitting at the bottom of the toilet and your world comes crashing down.


  • All those photos of your cute baby...


  • So what do you do when you accidentally spill your grande latte all over your screen?


  • Is there any way to rescue a drowned phone?


  • Sometimes, maybe, if you act quickly.


  • The biggest problem here is that most water contains ions that make it conductive.


  • Which means it can mess up where power is being routed in your phone and short-circuit essential components.


  • In a short circuit, there's a connection being made that allows a quicker, easier path for current to flow.


  • That can fry some parts, since they aren't designed to handle that kind of jolt.


  • And it can quickly drain your battery in a way that can cause long-term damage.


  • So if your phone is wet and it's still on, the first thing you should do is turn it off.


  • That way, at least you're not actively sending a current through all that circuitry.


  • And if the screen went black, resist the urge to turn it on to see if it's still working.


  • Once your phone is off, you'll want to use a cloth to dry as much of the water as you can.


  • Letting the water dry naturally is not a good plan because it can react with parts of the phone and cause corrosion.


  • Which wears away components and can cause permanent short circuits and irreversible damage.


  • Plus, the longer the phone is wet, the more time the water has to seep into it and get to the most sensitive electronics.


  • If your phone was truly soaked through, odds are you've already got water in places you can't reach.


  • You'll need to make sure all of that water has dried, too, before you turn it back on.


  • That's why you might have heard people suggest putting your wet phone in a container of uncooked rice for a day or so.


  • The idea here is that the rice grains are a desiccant.


  • They attract and absorb water.


  • Just like leave a container of rice open in a humid environment for a while and you'll see what I mean.


  • Just maybe don't eat it afterward.


  • When you put your phone in a tightly sealed container with rice, you're hoping that the rice will pull the moisture from the trapped air,


  • allowing the water in your phone to evaporate more quickly and leaving you with a nice, dry phone.


  • Some people swear by this, and rice-drying is definitely better than blow-drying your phone.


  • The hot air might get rid of the water, but heat generally isn't very good for electronics.


  • Rice isn't the best desiccant, though.


  • It's just convenient because most people have it in their house already.


  • There are a lot of other substances that are much better at wicking moisture, like the little silica packets that say "Do Not Eat" on them, or even cat litter.


  • So if your that kind of person who tends to give your phone lots of unscheduled baths, you might want to hoard all those little silica packets and put them in an airtight container for a rainy day.


  • But even with the best desiccant, there's no guarantee you'll be able to rescue your phone if the water has done its worst.


  • So if this does happen to you a lot, you might just want to invest in a waterproof phone or a waterproof case.


  • Or, if you're interested in experimenting with things like desiccants and circuits, you can check out

    又或者,如果你對於乾燥劑、電路等相關的實驗很感興趣的話,你可以去看 。

  • supports SciShow, and we think you'll like their interactive quizzes and lessons in astronomy, physics, geometry and more. 贊助 SciShow。我想你會喜歡他們的互動式課程和測驗,包含天文學、物理學、幾何學等等。

  • Actively solving problems is a great way to master the concepts you might learn about here on SciShow.

    主動的解決問題是學習精通各種概念的好方法。你可能已經在 SciShow 學到一些了。

  • Brilliant has a chapter on Oscillations in their Classical Mechanics course, which explains why fireflies' blinks synchronize when they're in a group.

    Brilliant 網站有一個古典力學的課程,裡面有一個章節在說震盪現象,解釋了為何螢火蟲在群體中可以同時發亮。

  • There are helpful solutions and animations that walk you through the equations involved.


  • Brilliant teaches you how to think like a scientist, and there are tons of different topics to try.

    Brilliant 網站教你如何像科學家一般思考,也還有更多不同的主題等著你嘗試。

  • To check it out, you can go to and sign up for free.

    如果想知道更多的話,可以搜尋 並免費註冊。

  • As a bonus, the first 200 people who subscribe through SciShow will get a 20% discount on their annual subscription.

    作為獎勵,最先透過 SciShow 訂閱的兩百個人可以獲得八折的年訂閱優惠。

This episode of Scishow is brought to you by

這一集的 Scishow 是由 贊助播出。

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