A more modern experiment requires a [[television]] camera and receiver. If one sends the signal from the camera to the receiver, and then ''aims the camera at the receiver,'' the receiver will show a picture of itself, holding a picture of itself, holding a picture of itself, holding a picture of itself, and so on to infinity. | A more modern experiment requires a [[television]] camera and receiver. If one sends the signal from the camera to the receiver, and then ''aims the camera at the receiver,'' the receiver will show a picture of itself, holding a picture of itself, holding a picture of itself, holding a picture of itself, and so on to infinity. |