Scientist Mairead Smith (r), tests a "robot" that disinfects hospital rooms with ultraviolet light at ECRI, a medical research facility Thursday, Marc

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Scientist Mairead Smith (r), tests a "robot" that disinfects hospital rooms with ultraviolet light at ECRI, a medical research facility Thursday, March 2, 2017 in Plymouth Meeting, Pennsylvania. (WILLIAM THOMAS CAIN / For The Philadelphia Inquirer)

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Photo credit: © William Thomas Cain / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: hospital, light, robot, science, scientist, testing, ultra, violet