Wax vs. ceramic coating
Wax sits on your paint. A ceramic coating bonds to it. Here's what that means for shine, water beading, scratches, rock chips and cost. Wax every month, or coat once and forget it?
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3D breakdowns of the tech you use every day. Here's gear from the videos.
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E-bikes vs. burgers
A full e-bike battery holds less energy than one burger, yet it takes about three burgers to ride as far as one charge. Body heat is the difference. Outlet or drive-thru?
Shop: Ebike battery charger on AmazonHeat pumps
A heat pump doesn't make heat. It moves it, even out of freezing air, thanks to a refrigerant that boils near -50 °C. Would you swap your furnace for one?
Shop: Heat pump water heater on AmazonLithium battery fires
A lithium battery fire heats itself, makes some of its own oxygen and hides inside a sealed case, so water and smothering struggle. Do you charge your e-bike or phone overnight?
Shop: Lithium battery fire extinguishers on AmazonFoldable screens
A foldable phone screen really has glass in it, just thinner than a hair, tucked into a stack built so the bend barely touches the fragile parts. Would you trust a folding phone?
Shop: Foldable phone screen protector on AmazonContactless cards
A contactless card has no battery. The payment terminal powers it through the air for a split second. Card or phone?
Shop: Rfid blocking wallet on AmazonCamera stabilization
The lens in your phone camera floats on springs, and gets pushed around to cancel out your shaky hands. Ever heard yours rattle?
Shop: Phone gimbal stabilizer on AmazonThermal printers
Receipt printers don't use ink. The paper itself turns black wherever it gets hot. Do you still take the paper receipt?
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A lotus leaf is covered in tiny waxy bumps. Water can barely touch it, so it just rolls away.
Shop: Hydrophobic spray coating on AmazonGPS
GPS doesn't track you. Your phone listens to clocks in space and works out where it is.
Shop: Handheld gps on AmazonSmoke detectors
There's a speck of radioactive metal in a lot of smoke detectors. Here's why it's there.
Shop: Smoke and carbon monoxide detector on AmazonNoise-cancelling headphones
Noise-cancelling headphones don't just block sound. They play the noise back at you, upside down.
Shop: Noise cancelling headphones on AmazonInduction cooktops
An induction stove doesn't heat the pan. It makes the pan heat itself. Here's how.
Shop: Portable induction cooktop on AmazonWireless charging
Your phone charges without touching a single wire. Here's what's actually going on inside the pad.
Shop: Qi2 wireless charger on Amazon