Technology
How Does E-Ink Hold an Image Without Power?
An electric field moves charged black and white pigment particles toward the surface of each microcapsule. Their bistable positions persist, so power is used mainly when the display changes.
TECHNOLOGY
Technology
The inventions, mistakes, and language behind the tools we use today.Technology
How Does the Internet Cross the Ocean?
Most international Internet data travels as laser light through submarine fiber. Repeaters amplify fading signals while protective layers and cable ships keep long routes operating.
Technology
How Can a Damaged QR Code Still Work?
QR Codes store Reed-Solomon error-correction data alongside their message. Remaining codewords can repair some damage, although essential patterns, contrast and margins still matter.
Technology
Why Do Rechargeable Batteries Wear Out?
Charging and discharging gradually grow interface films, crack particles, decompose electrolyte and consume usable lithium. Together these changes reduce capacity and raise resistance.
Technology
How Does GPS Find Your Location?
A receiver converts satellite signal travel times into distances. It solves ranges from at least four satellites together with its clock error to locate itself in three dimensions.
Technology
The First Computer "Bug" Was an Actual Moth
The term "bug," used today to describe a software error, is famously traced back to an actual moth found inside a computer in 1947.
