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# Johann Heinrich Lambert

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**Johann Heinrich Lambert**(German: [ˈlambɛʁt], Jean-Henri Lambert in French; 1728 –1777) Swiss German mathematician, astronomer, physicist, and philosopher. In 1761, he proved that

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## External links

- O’Connor, John J.; Robertson, Edmund F., “Johann Heinrich Lambert”,
*MacTutor History of Mathematics archive*, University of St Andrews. - Johann Heinrich Lambert, ©2016 Encyclopædia Britannica, Inc.