It was found that the ratio .3937079 could be obtained almost exactly, if, instead of the centimeter being too short, it were too _long_ by .00008 cm. at 67°.
On this supposition the following tables were obtained. They represent the value of one turn of the micrometer in millimeters.
Table 1 is the result from centimeter scale.
Table 2 is the result from half-inch scale.
It is seen from the correspondence in these results, that the previous work is correct.
From 0 to 13 .99563 .99562 .99570 25 .99562 .99564 .99571 38 .99560 .99572 .99576 51 .99567 .99578 .99580 64 .99577 .99586 .99585 76 .99582 .99590 .99592 89 .99590 .99598 .99601 102 .99596 .99608 .99605 115 .99606 .99614 .99615 128 .99618 .99622 .99623 140 .99629 .99633 .99630
End of the Project Gutenberg EBook of Experimental Determination of the Velocity of Light, by Albert A. Michelson