Light makes matter visible to your eyes; it is itself invisible.

KBS Sidhu, ex-IAS (Substack)
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1 min read·
Nov 26, 2018
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Light makes matter visible to your eyes; it is itself invisible.
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Written by KBS Sidhu, ex-IAS (Substack)735 Followers
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Spl. Chief Secretary (retd.), Punjab; ex-IAS, 1984 batch, https://substack.com/@kbssidhu?utm_source=profile-page
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