Gadgets
Wi-Fi 6 vs 6E vs 7: What the Numbers Mean and How to Fix Slow Wi-Fi
New routers and phones advertise Wi-Fi 6, 6E and 7. Meanwhile, your Wi-Fi still drops in the bedroom. Understanding what each version actual...
Gadgets
AI
Passkeys Explained: Why Your Passwords Are Being Replaced
Google, Apple, Microsoft, banks and shopping sites are now asking you to "create a passkey". It is the biggest change to how we lo...
Gadgets
What Do AQI Numbers Mean, and Do Air Purifiers Actually Work?
Air quality is one of the most searched topics in India every winter, and wildfire smoke now sends air quality alerts across North America a...
Energy
Solid-State Batteries: What They Are and Why Phones and EVs Are Waiting for Them
Carmakers and electronics companies keep announcing breakthroughs in solid-state batteries. They promise longer range, faster charging and b...
Gadgets
How Starlink Satellite Internet Works: Dishes, Lasers and Low Orbits
Starlink has put high-speed internet on ships, aircraft, remote villages and disaster zones. It works very differently from older satellite ...
Gadgets
OLED vs LED vs QLED TV: How Each Screen Works and Which One to Buy
TV shops are full of acronyms: LED, QLED, Mini-LED, OLED. They sound like different generations of the same thing, but they are really two d...
Energy
How Lithium-Ion Batteries Work, and 7 Habits That Make Your Phone Battery Last Longer
The same basic battery technology powers your phone, laptop, electric scooter and electric car. Understanding what happens inside a lithium-...
AI
How UPI Works Behind the Scenes: What Happens in the Few Seconds After You Pay
You scan a QR code, enter a PIN and the shopkeeper's phone chimes within seconds. India now processes billions of UPI transactions every...
Gadgets
How GPS Knows Exactly Where You Are: Satellites, Timing and Einstein
Your phone can place you on a map within a few metres, anywhere on Earth, without sending a single signal to space. It only listens. The tri...
Gadgets
How Noise-Cancelling Headphones Erase Sound: The Physics in Plain Words
Put on a good pair of noise-cancelling headphones on a train or plane and the rumble fades as if someone turned down the world. The trick is...
Energy
EV vs Petrol in India: The Real Cost of Ownership, Kilometre by Kilometre
Electric vehicle advertisements talk about saving on fuel. Petrol loyalists talk about the high purchase price and battery worries. Both are...