Hawking's Wheelchair

Initially, Hawking's wheelchair was just a means of transportation. As Hawking's condition worsened, the wheelchair became the only tool for communicating with the outside world, forming a part of Hawking's image. The wheelchair has served Hawking for a total of 55 years, during which time it has undergone about five iterations of updates, enabling speech communication and scientific research through small movements of the face or eyeballs.