at Utrecht, an apparatus was constructed for these experiments which 
runs perfectly regularly, which gives accelerations from 0.03 g. to 
60 g., which picks up and looses the whole of its speed in the 
space of r/ 2 seconds, and which can be used with a vertical and 
with a horizontal axis. 
With this apparatus I obtained the following results-. 
Acceleration Presentation time Product in (/-seconds of^is* 
0.08 g 
0.08 g 
0.14 9 
0.25 g 
0.36 g 
0.38 g 
0.60 g 
0.67 g 
0.76 g 
1-04 g 
1.25 g. 
2.08 g 
2.14 g 
2.24 g 
2.30 g 
2.89 g 
3.00 q 
3.04 g 
3.71 g 
3.93 g 
4.42 'g 
4- 43 g 
4.68 g 
5.36 g 
5- 76 g 
6.48 g 
10.08 g 
11.70 g 
13.89 g 
17.28 g 
23.86 g 
41.76 g 
58.43 g 
In these 
3900" 
3900" 
2230" 
1300" 
510" 
441" 
415" 
310" 
248" 
140" 
145" 
125" 
135" 
110 " 
100 " 
75" 
72" 
70" 
65" 
55" 
31" 
26" 
22 " 
13" 
7" 
products there 
312 horizontal 
312 vertical 
312 horizontal 
325 
299 vertical 
306 horizontal 
306 vertical 
296 horizontal 
315 
322 vertical 
, 310 
291 
310 
281 
311 horizontal 
318 vertical 
300 
286 
297 horizontal 
295 vertical 
318 
3IQ horizontal 
3Q4 vertical 
295 » , 
305 horizontal 
292 . vertical 
312 
304 ” 
30g horizontal 
344 vertical 
310 
292 
292 ’’ 
therefore a possible error of 3 /# 
