Show xray X ray reflectors I 1 mica has hag been found an excellent material for concentrating mirrors for X rays glass will not do bee because ause smooth as it Is it Is too rough for the extremely minute X rays which are much smaller than light waves glass diffuses the X rays much as a rough surface diffuses dlf fuSes light yaves waves hut but it was found bound th atthe surface of mineral crystals were of the requisite smoothness I 1 for reflecting X rays and of them mica Is the most adaptable being readily split into sheets I 1 |