Topic
Screens
2 articles
Technology
How does a touchscreen tell your finger from your glove?
Pull a glove on and your phone stops answering. The glass is the same and the push is the same, so something else about a bare hand is doing all the work.
Technology
Why do sunglasses turn a screen black?
Tilt a pair of sunglasses in front of a laptop and the picture vanishes. Nothing has been switched off. The screen is doing something to its light long before it reaches your eyes.