How does a cloud stay cool under direct sunlight––or seem to vanish in infrared? In nature, phenomena like white cumulus ...

This paper proposes a new location-awareness system ALTAIR (automatic location tracking system using active IR-tag) that automatically detects and tracks the location of the mobile PC (personal ...

Modern smartphones use proximity sensors for much more than just turning off screens during calls. These advanced sensors, powered by IR emitters and receivers, detect nearby objects like your hand or ...