How do hard disk drives work?

These interactive 3D models explain how hard disk drives magnetically store information.

Latest in Tech

Tech behind ADAPT: We’re building a social network for adventure seekers – get a sneak peek

The platform will allow our fellow outdoor enthusiasts to ask questions, start discussions, upvote, comment, share content and connect with other members.

Inventor lands deal to manufacture ‘swappable’ aluminium-air battery that can power electric cars for 1,500 miles

Technically an aluminium-air fuel cell, the idea is that these can be swapped out at supermarkets and recycled when spent.

The best electric cars of 2019 – our top 5 EVs

Looking for your first electric car? Here are five affordable but punchy EVs available in the UK now.

GoPro’s new HERO8 Black has add-on ‘mods’ and an integrated mounting system

A mic, a screen, a light + no frame or housing required.

First fully rechargeable carbon dioxide battery is seven times more efficient than lithium-ion and carbon neutral

Researchers at the University of Illinois at Chicago have successfully tested a lithium-carbon dioxide battery prototype running up to 500 consecutive cycles of charge/recharge processes.

Blind man helps develop smart cane that uses Google Maps and sensors to navigate the world

The WeWALK smart cane uses ultrasonic sensors to warn of nearby impediments through vibrations in the handle.

Tech behind ADAPT: Win 1 of 3 yearly subscriptions to OptinMonster

We've teamed up with OptinMonster to give three budding bloggers a free 12-month pro subscription (worth $348).

PoW is efficient: Why Bitcoin is not bad for the environment

In fact, by incentivising the development of cheap, clean and abundant energy sources, Bitcoin may be the catalyst we need to move to a Type I energy civilisation and save the planet.