Cosmology Old and New

Author(s): G R Jain
Publisher: Bharatiya Gyanpith

Page 97

SÜTRA 5.
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continuous stream, it does not give a sudden impulse but it causes impact on the surface on which it falls just like a jet of water or a blast of wind. It is reported that with a sufficiently strong light one could knock a man down. Fig. 9 illustrates how the tails of comets always point away from the sun. This is because a comet is composed of very minute particles which are blown back by the pressure of the light from the sun.
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The figure shows the tail of a comet continuously veering round so as to be always opposite the sun, thus verifying the Pudgala 155 nature of Light energy.
Fig. 9 To quote further from the same book :'
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"There is no doubt that a body losing energy by radiating light does lose mass; but without necessarily losing particles. The sun loses, in one year, 1,38,00,00,00,000 tons by its radíation.
"If ligth is absorbed by a body, the body becomes warmer and simultaneously heavier by the mass corresponding to the
155. Recent mathematical calculation shows that this radiation pressure is not strong enough.
156. Vide Restless Universe.