How did Robert Cornelius achieve the first ever selfie?

Robert Cornelius achieved the first-ever selfie by setting up a camera on a tripod and quickly running into the frame. This method was necessary due to the long exposure times required by early photography equipment, which could take several minutes to capture an image. By placing the camera on a stable surface, Cornelius could ensure that the image would not be blurred by shaking. After running into the frame, he remained still for a short period, allowing the light to capture his likeness effectively. This innovative approach marked a significant moment in the history of photography and established the concept of self-portraiture through a photographic process.