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Invention of “Glasses/lenses”

Invention of “Glasses/lenses”. Ngawang Tsering. Reason “why?”. No visual instrument, ancient Egyptians, Greeks, Romans Prominent roman stressed resignation in old age Can’t read for himself Can’t do his daily work Turning blind slowly. Beginning “how?”. 4 B.C, Roman tragedian Seneca

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Invention of “Glasses/lenses”

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  1. Invention of “Glasses/lenses” NgawangTsering

  2. Reason “why?” • No visual instrument, ancient Egyptians, Greeks, Romans • Prominent roman stressed resignation in old age • Can’t read for himself • Can’t do his daily work • Turning blind slowly

  3. Beginning “how?” • 4 B.C, Roman tragedian Seneca • He read books through water glass globe • He got the magnification of the letter • Reading stone

  4. creation • Developed glass globe into lens • 1284 in Italy, Salvino D'Armate • No more placing on reading material • Easy to read

  5. Importance • Chinese developed it 2000 year ago • Purpose, to protect eye from evil force • Around the world glasses are fashion • Prescribed for eyes • Protective glasses at work, labs, ski, swimming, dive

  6. Effects • Invention of glasses/lenses led to many technology •  1752, James Ayscough introduced his spectacles with double-hinged side pieces • 1929, Sam Foster sold the first pair of Foster Grants sunglasses  • 1929 edwin land: polaroid sunglasses, glare-free automobile headlights and stereoscopic (3-D) photography

  7. New development • 1988, Adolph Fick thought contact lens • 1948,Kevin Tuohy invented soft plastic contacts • Now, lasik vision with synthetic lens

  8. Future • Might be more clear than ever • More beneficial and more convenient • Let’s see if it can be possible • http://www.youtube.com/watch?v=5R1snVxGNVs&feature=related

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