I Peter Mansfield waved a hand in a gesture that included the laboratory inclusively and said, "I can't wait to turn it on." Norma Higgins smiled up at him and said, "Peter, you're still a bit of a breathless kid at heart, aren't you?" Peter nodded boyishly. "Maybe I am," he admitted with a grin. "But after a guy has worked and slaved for about five years, and then he finally gets his job finished, it's tough to wait before he can try it out." "Just 'till tomorrow," said Norma softly. "It isn't