David Brewster
17811868
Scottish astronomer, mathematician, physicist, and inventor known for his work in physical optics, including the discovery of Brewster's angle and the invention of the kaleidoscope
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ເບິ່ງທັງໝົດໃນຊີວິດ ດ້ວຍຕົວກອງທີ່ໃຊ້ແລ້ວ