How do hard drives work? - Kanawat Senanan

The modern hard drive is an object that can likely hold more information than your local library. But how does it store so much information in such a small space? Kanawat Senanan details the generations of engineers, material scientists, and quantum physicists who influenced the creation of this incredibly powerful and precise tool.

Lesson by Kanawat Senanan, animation by TED-Ed.

[cmmvvt]

I would like to say thank you.... to all those people who put their efforts in making this possible.

[mreyeball]

It’s so cool how we got from banging stones together to this.

[ssebinnnyy]

To all the scientists, engineers and physicists who made this possible and helped us usher a new era of information, we really appreciate you.

[askjt]

My mind has just been blown. I am struggling to understand just how complex something that costs less than £50 is. And to think that it can play back video games is absurd.

[starlightsall]

This is one of those things that can restore your faith in humanity and makes you feel hopeful about the future.
Incredible video!

[decryptroblox]

2010: 500gb is a lot
2019: 2tb is awesome and 16 tb is maximum
2087: I’m rocking a 1000 petabyte SSD and a 2000 petabyte portable HDD from seagate

[anatolesokol]

"how hard drive works" - they work really hard, all that drives...

[Arrviasto]

As a educational channel you should use metric system. Or at least both metric and imperial.

[zzy]

Technology is amazing, I'm so appreciative of the world we live in.

[ArizonaJewell]

HDDs are practically magic. I’ve always found them super fascinating personally. The fact that we have technology that can store and recover a mind boggling amount of data on a small little disk that is spinning at a similar RPM to the average car engine is just incredible. What’s really cool to see is slow motion footage of an HDD seeking. In real time, the head moves across the platter in the blink of an eye, but in slow motion you can see it make precise, tiny little movements across the spinning disk to read and write data.

[allanjasonmburu]

amazing. lets give a round of applause to all the engineers and scientists in the world

[Ndo]

This vid really makes me realize how little I know.

[satrangirasoi]

Man everything can be innovated to a while new level🤯. From being able to make 2mb ram the size of our modern pc cabinet to making the whole pc fit in just 2% of the space and storing millions of time more, it's just beautiful, how much humans have grown

[samysaid]

mean....How?






How are humans able to invent, or even come up with stuff like this?

[weegie]

It’s just incredible how MUCH data can be crammed in such a small space. We went from floppy disks with a whopping 1.44 mb of storage to 100gb hdd’s in less than 15 years

[CinematicTechnologies]

Wow, we truly are living in the future.

[CyberSystemOverload]

What absolutely amazing clever people out there. Whom we owe so much to for the tech we use every day without a second thought. To all those generations of engineers and the current gen giving us SSDs, smartphones, GDDR5, GPUS and so much more - thank you.

[jaytwo]

This really is mind blowing how well all of these things work, and how cheap they are to us all. We truly live in a remarkable time.

[sebdouse]

I cannot even begin to understand the fundamentals of how this stuff works. Ted Talks like these make me want to learn everything on the planet.

[andrest]

You're telling me people looked at rocks, water, and air and thought "Imma make Bluetooth". Crazy.