<<  Kaleidoscope Initially intended as a scientific tool, the kaleidoscope was later  >>

History. Sir David Brewster began work leading towards invention of the kaleidoscope in 1815 when he was conducting experiments on light polarization. His initial design was a tube with pairs of mirrors at one end, pairs of translucent disks at the other, and beads between the two. Initially intended as a scientific tool, the kaleidoscope was later copied as a toy. Brewster later believed he would make money from this popular invention; however, a fault in his patent application allowed others to copy his invention.

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Слайд 2: History | Презентация: Kaleidoscope.pptx | Тема: Тексты на английском | Урок: Английский язык