NICHOLS AND HULL. — PRESSURE DUE TO RADIATION. 



583 



TABLE IV. 

 Radiation Pressure. Ballistic Measurements. 



Through Water Cell. 



Date. 



June 20 

 July 25 



" 26 

 Aug. 27 



" 29 

 Sept. 20 



" 23 



" 24 



June 23 



July 25 



Aug. 27 



" 28 



" 29 



" 31 



Sept. 20 



" 23 



" 24 



Ca + XIs 



18.62 

 19.00 

 18.03 

 18.63 

 18.25 

 20.39 

 20.21 

 19.84 



Ce+Dg 



17.10 

 20.10 

 19.39 

 18.66 

 19.02 

 19.14 

 19.51 

 18.91 



-Ps cor- 

 rected for 

 rr=24". 



18.46 

 18.85 

 17.89 

 18.50 

 18.10 

 20.23 

 20.05 

 19.69 



Pg cor- 

 rected for 

 r--24". 



16.96 

 19.94 

 19.33 

 18.53 

 18.87 

 19.00 

 19.36 

 18.77 



7*8 X Ob 



I 



Average . . 

 Through Red Glass. 



18.26 

 20.77 

 19.10 

 19.28 

 19.77 

 19.14 

 19.82 

 2018 

 19.53 



Average . . 



17.14 



15.82 

 15.80 

 16.29 

 15.68 

 16.69 

 16.37 

 16.10 



16.24 



17.05 

 17.24 

 17.46 

 17.36 

 17.14 

 16.82 

 17.19 

 17.39 

 17.03 



t 



16.00 

 16.74 

 10.84 

 15.99 

 16.06 

 15.82 

 16.23 

 15.40 



16.15 



16.06 

 17.43 

 16.46 

 16.75 

 16.82 

 16.84 

 16.50 

 16.92 

 16.03 



1718 



16.65 



P 



Average. 



16..57 

 16.28 

 16.32 

 16.14 

 15.87 

 16.25 

 16.30 

 15.70 



16.20 

 ±0.060 



16.56 

 17.33 

 16.96 

 17.05 

 10.98 

 16.83 

 16.84 

 17.15 

 16.53 



10.91 

 ±(1051 



