?? ???? ??? ??? ??? ????????? ?? ???? ???? ???? ?????? ?? ????? ?? ????? ????? ???? ???? ???? ???? ????.??? ????? ??? ?????? ????????? ???? ?? ???????? ? ??? ?????? ??????? ????? « ???? ?????? » ??????? ) ??????? ) ???? ????? ??????? ?? ?? ? ?????? ????? ???? ????? ??? ? ??????? ???????Fizeau found that at a specific amount of rotation, the beam