To an observer situated on the moon or on one of the planets, the most noticeable feature on the surface of our globe would no doubt be the large areas covered by oceanic water.
Is there any more encouraging sign than to see an Indian, who has never been to a university, like our friend Mr. Asutosh Dey here, for example, carrying out original work and finding it recognized by the foremost societies of the world?
Towards the end of February 1928, I took the decision of using brilliant monochromatic illumination obtained by the aid of the commercially available mercury arcs sealed in quartz tubes.
In the first English class I attended, Prof. E. H. Elliot, addressing me, asked if I really belonged to the Junior B. A. class, and I had to answer him in the affirmative. He then proceeded to inquire how old I was.
The fundamental importance of the subject of molecular diffraction came first to be recognized through the theoretical work of the late Lord Rayleigh on the blue light of the sky, which he showed to be the result of the scattering of sunlight by the gases of the atmosphere.
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