The Laboratory for Radioactivity consisted of only two rooms at the time; at a later date, when tests of radioactive substances became more extensive, it expanded into four rooms.
It is one of the severest tests of friendship to tell your friend his faults. So to love a man that you cannot bear to see a stain upon him, and to speak painful truth through loving words, that is friendship.
We worked on solving the problem of voice communications in a noisy military environment. We established military codes that are highly audible and invented selection tests for personnel who had a superior ability to recognize sound in a noisy background.