Equipment: A waiter's tray and a glass filled with water or "wine". What it does: When the waiter's tray is swung in a full circle, the glass does not move and the water does not fall out. Concepts ...

Waiters in Bath have been taking part in a Parisian tradition, racing against each other while trying to keep a tray steady. People working across the city's restaurants and cafes took turns ...

The three robots, which are named Claire, R24 and Nadia, aren’t programmed to have a full conversation ... up their food from the tray. They are commanded by waiters through an application ...