Physical AI is artificial intelligence embedded in machines that can perceive, decide and act in real-world environments. Unlike chatbots, physical AI systems collect information from the 3D world using sensors such as cameras, microphones and lidar (laser-based distance sensors). They can also use environmental sensors that measure temperature, pressure, humidity and vibration to understand what's happening around them. They process that information in real time and then control motors, wheels, robotic arms or other mechanical components to respond. "Physical AI is definitely not just a ChatG