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(2012-01-01 00:25)
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Fig. 1: The Graz «coupled shutters» experiment during preliminary measurements in the air of the laboratory; when performing measurements in vacuum the laser was mounted in parallel with the axle and the regulator for motor’s velocity (to be seen between the motor and the far disk) was taken outside the evacuated space. At the left corner of the apparatus' plate one sees the socket for one of the reflecting mirrors for the case that Sun’s light should be used (the socket of the other reflecting mirror is at the far right corner). The mechanician spent considerable time (and I lost money) for mastering the adjustable reflecting mirrors for Sun’s light which have not been used in the laser arrangement, so that the price of the actually used apparatus had to be less than the half.

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