Isaac Newton. Engraving of Sir Isaac Newton (1642- 1727), English physicist and mathematician, discovering that his notes on optics are burning. This

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Isaac Newton. Engraving of Sir Isaac Newton (1642- 1727), English physicist and mathematician, discovering that his notes on optics are burning. This incident, in 1692, was blamed for a nervous breakdown that Newton suffered and his subsequent retirment for two years. The accident happened as Newton was preparing his book on light, Opticks (1704). Whilst attending a church service in Trinity College at Cambridge University, Newton's dog, Diamond, knocked over a lighted candle onto several years' notes on optical experiments. On discovering this, Newton alledgedly exclaimed \Oh Diamond, Diamond, little do you know the mischief you have done me\"."

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Keywords: breakdown, burning, isaac, newton, notes, opticks, optics, physicist, portraits, sir, surname