PETER MENZEL / SCIENCE PHOTO LIBRARY PETER MENZEL / SCIENCE PHOTO LIBRARY
Robotic wheelchair. Time-exposure image of researcher Joseph Spano testing a robotic ball-wheelchair. This chair uses spheres instead of wheels, and automatically compensates for the movements of its user by adjusting the position of its spheres. This is known as autonomous-control technology. Spano works in the laboratory of Harry Asada, at the Massachusetts Institute of Technology (MIT), Cambridge, USA.
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