How EV Batteries Store Energy
மின்சார வாகன பேட்டரிகள் ஆற்றலை எப்படிச் சேமிக்கின்றன?
An electric car's battery is a pack of many small cells. Here is how they hold energy, and why driving range varies.
Technology
தொழில்நுட்பம்
How the gadgets, networks and machines in our lives actually work.
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How Does Wi-Fi Pass Through Walls?
வைஃபை சுவர்களைக் கடந்து எப்படிச் செல்கிறது?
Wi-Fi uses radio waves, which can pass through many walls but not all of them. Here is why, and how to get a better signal.