at christmas, 1938, lisa meitner, was in sweden with her ischz, who wefr have in the next slide. also a physicist, had many distractions. they were deeply worried about his parents, who were still trapped in austria, and they were glad to look at some further information sent them by hahn as a distraction. as they walked and skied in the snow, they began to realize that what hahn had achieved was actually the splitting of the uranium nucleus. meitner wrote to hahn, "you really do have a splitting to barium. wonderful finding. a really beautiful result." when frischz returned to copenhagen, where he was working daneniels bohr, the invited him to produce a paper. in so doing, frischz found a name for the new phenomenon. he asked an american colleague, the biologist william a. arnold, what he called the process by which single cells divide into two. arnold replied "fission." frischz connected -- conducted some experiments to determine their conclusions were right, and, thus, he became the first person to provide experimental proof of the fission of the uranium atom when hit by a neu