The conversation between human and AI assistant.
How can massless particles (photons) have momentum?
Very interesting. Can you tell me more about radiation pressure and solar sails?
Sure. Radiation pressure is a physical phenomenon that occurs when electromagnetic radiation, like light, collides with an object. The momentum of the photons gets transferred to the object, causing it to experience a force. Solar sails, for example, use the radiation pressure from sunlight to propel spacecraft without the need for fuel.