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Vol. XVI, No. 1
propagated through empty space and that electromagnetic fields are a reality of their own and can exist in empty space.13 Or,as Jeans expresses: "If we want to visualise the propagation of light-waves and electromagnetic forces by thinking of them as disturbances in an ether, our ether must be something very different from the mechanical ether of Maxwell and Faraday.14 (To Continue)
References:
1. See, Principia Mathematica, Tr. by Motte and Canjorie, p. 6 (Berkeley, 1947)
2. Ibid, p. 6
3. Cf. Whittaker, From Euclid to Eddington, p. 13
4. Loc. cit.
5. Loc. cit.; also of Sir James Jeans, The Mysterious Universe, p. 78 6. Cf. Lincoln Barnett. The Universe and Dr. Einstein, p. 45 (Mentor
Book, New American Library of World Literature, New York, 194).
7. Cf. Ibid, p. 45
8. Cf. The Mysterious Universe, p. 74
9. Cf. The Universe and Dr. Einstein, p. 45-48
10. This fact can be stated by the following equation;
If,
and then,
11
length of measuring rod at rest,
length of measuring rod in motion,
= velocity of moving rod,
12
V
C
12
59
J
velocity of light (which is nearly 186000 miles per second),
t = time taken by body travelling with velocity.
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-
vt
(v2) (c2)
It is obvious that when v is negligible in comparison to c, lg will be nearly to 11; but when v is comparable to c, 12 will be much less than 1,.
11. Cf. The Mysterious Universe, p. 77
12. The Universe and Dr. Einstein, p. 49, 50
13. Heisenberg, Physics and Philosophy, p. 101 14. The Mysterious Universe, p. 90.
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