(Solved by Humans)-Bob Knowlton was sitting alone in the conference room of the

Question

Bob Knowlton was sitting alone in the conference room of the laboratory. The rest of the group had gone. One of the secretaries had stopped and talked for awhile about her husband's coming induction into the army and had finally left. Bob, alone in the laboratory, slid a little further down in his chair, looking with satisfaction at the results of the first test run of the new photon unit.