i88 3 J 
573 
The Velocity of Light. 
The opposing curves, representing contending forces, 
must, like all arrested motions, produce beside the actual 
transport of particles mass vibrations, conflicting contacts, 
waving of molecules wholly and in their own strata, charac- 
terising the particular molecules engaged. 
The length of these waves being determined by the ratio 
of the contending forces, the diameters of the vibratory 
curves, the possible extent of their angular combination, or 
the relation of equatorial and mean centrifugality of the 
whole revolving mass and medium, which is by opposition 
continually in polar motion antagonistic to increase of 
centrifugality. The number of wave-lengths in direct white 
light not diverted and decomposed is therefore equal in the 
whole height of the atmosphere. 
Solar g at Surface Pressure i of Centrifugality 
Distance of the Earth Atmosphere. x at Equator to g 
Height of G ~R 2 of Sun Centrifugality developed Mean Centrifu- 
Atmosphere x at that Surface x in Atmosphere. galityto g - . 
Or— 
Radius 
Formula b : — 
Cos 30°. 
= 1,789,242 x 1713 X 44-63 x 3334289; or 1-149; 
which divided by 84,500 metres, the height of the atmo- 
sphere, gives to the metre 1,849,242 wave-lengths in the 
verse and transverse sense, and 540*7 mth. m.m. as length. 
A and H 2 are not the limits of darkness ; we get them on 
the side of the red by multiplying the 540*7 by V 2 with 
764*5 mth. m.m., and on that of the violet by dividing the 
540*7 by V 2 with 382*4 mth. m.m. ; that is, respectively 
multiplying and dividing the 44*63 in formula b with V 2 * 
* Thinking that the last breaking-up line of white light, or the interference 
of the completely unequalised wave-lengths, representing the oscillating dia- 
meter through the vertex of the mean of all water-stuff curves mediating 
between a&ual transport and vibration of mass, must be a prominent line, I 
expected to find it in E, with 526'g mth. m.m. wave-length or 1,897,000 waves 
to a metre, which itself, or whose immediate neighbourhood, divides the 
extent of the spe&rum beginning from the side of the violet as 1 : r6g, as the 
density of vapour to that of air, o. s. p. It does, however, not correspond to 
the wave-lengths of A and H 2 when the scale of 2 and the ascent and descent 
with V2 is maintained, and would, applied to formula a, increase solar dis- 
tance, making the velocity of light 309,910,000 metres. The line is, however, 
not without particular interest. 
Angstrom says “ E has served me as a start in my micrometric measure- 
ments,” without telling us why ; “ there are really two E’s ; it appears a 
dividing ray ; but it is impossible in spe&ra of a high order to get a distindl 
and direct image of the double ray.” He speaks of getting 1*4 units more 
