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Treatise on light - In which are explained the causes of that which occurs in reflexion, & in refraction and ⠃⠗⠋ braille edition

Grade 1 — uncontracted, letter-for-letter. Translated on this server by our own braille engine (BRF — Braille Ready Format, Library of Congress fdd000551). View Grade 2 instead.

Download .brf — Grade 2 Download .brf — Grade 1 Plain-text reader .txt

214,368 braille cells · 226 embossed pages at 40×25 · 322 unrepresentable characters omitted

⠁⠏⠏⠁⠗⠑⠝⠞⠀⠏⠇⠁⠉⠑⠀⠕⠋⠀⠞⠓⠑⠀⠠⠎⠥⠝⠂⠀⠺⠊⠇⠇⠀⠏⠁⠎⠎⠀
⠁⠃⠕⠧⠑⠀⠞⠓⠑⠀⠗⠑⠁⠇⠀⠠⠎⠥⠝⠂⠀⠺⠓⠊⠉⠓⠀⠺⠊⠇⠇⠀⠃⠑⠀⠎⠑⠑⠝⠀
⠁⠇⠕⠝⠛⠀⠞⠓⠑⠀⠇⠊⠝⠑⠀⠠⠠⠁⠑⠲⠀⠠⠁⠝⠙⠀⠎⠕⠀⠊⠞⠀⠍⠁⠽⠀
⠕⠉⠉⠥⠗⠀⠞⠓⠁⠞⠀⠺⠓⠑⠝⠀⠊⠞⠀⠕⠥⠛⠓⠞⠀⠝⠕⠞⠀⠞⠕⠀⠃⠑⠀
⠧⠊⠎⠊⠃⠇⠑⠀⠊⠝⠀⠞⠓⠑⠀⠁⠃⠎⠑⠝⠉⠑⠀⠕⠋⠀⠧⠁⠏⠕⠥⠗⠎⠂⠀
⠃⠑⠉⠁⠥⠎⠑⠀⠞⠓⠑⠀⠇⠊⠝⠑⠀⠠⠠⠁⠑⠀⠑⠝⠉⠕⠥⠝⠞⠑⠗⠎⠀⠞⠓⠑⠀
⠗⠕⠞⠥⠝⠙⠊⠞⠽⠀⠕⠋⠀⠞⠓⠑⠀⠠⠑⠁⠗⠞⠓⠂⠀⠊⠞⠀⠺⠊⠇⠇⠀⠃⠑⠀
⠏⠑⠗⠉⠑⠊⠧⠑⠙⠀⠊⠝⠀⠞⠓⠑⠀⠇⠊⠝⠑⠀⠠⠠⠁⠋⠀⠃⠽⠀
⠗⠑⠋⠗⠁⠉⠞⠊⠕⠝⠲⠀⠠⠃⠥⠞⠀⠞⠓⠊⠎⠀⠁⠝⠛⠇⠑⠀⠠⠠⠑⠁⠋⠀⠊⠎⠀
⠎⠉⠁⠗⠉⠑⠇⠽⠀⠑⠧⠑⠗⠀⠍⠕⠗⠑⠀⠞⠓⠁⠝⠀⠓⠁⠇⠋⠀⠁⠀⠙⠑⠛⠗⠑⠑⠀
⠃⠑⠉⠁⠥⠎⠑⠀⠞⠓⠑⠀⠁⠞⠞⠑⠝⠥⠁⠞⠊⠕⠝⠀⠕⠋⠀⠞⠓⠑⠀⠧⠁⠏⠕⠥⠗⠎⠀
⠁⠇⠞⠑⠗⠎⠀⠞⠓⠑⠀⠺⠁⠧⠑⠎⠀⠕⠋⠀⠇⠊⠛⠓⠞⠀⠃⠥⠞⠀⠇⠊⠞⠞⠇⠑⠲⠀
⠠⠋⠥⠗⠞⠓⠑⠗⠍⠕⠗⠑⠀⠞⠓⠑⠎⠑⠀⠗⠑⠋⠗⠁⠉⠞⠊⠕⠝⠎⠀⠁⠗⠑⠀⠝⠕⠞⠀
⠁⠇⠞⠕⠛⠑⠞⠓⠑⠗⠀⠉⠕⠝⠎⠞⠁⠝⠞⠀⠊⠝⠀⠁⠇⠇⠀⠺⠑⠁⠞⠓⠑⠗⠎⠂⠀
⠏⠁⠗⠞⠊⠉⠥⠇⠁⠗⠇⠽⠀⠁⠞⠀⠎⠍⠁⠇⠇⠀⠑⠇⠑⠧⠁⠞⠊⠕⠝⠎⠀⠕⠋⠀⠼⠃⠀
⠕⠗⠀⠼⠉⠀⠙⠑⠛⠗⠑⠑⠎⠆⠀⠺⠓⠊⠉⠓⠀⠗⠑⠎⠥⠇⠞⠎⠀⠋⠗⠕⠍⠀⠞⠓⠑⠀
⠙⠊⠋⠋⠑⠗⠑⠝⠞⠀⠟⠥⠁⠝⠞⠊⠞⠽⠀⠕⠋⠀⠁⠟⠥⠑⠕⠥⠎⠀⠧⠁⠏⠕⠥⠗⠎⠀
⠗⠊⠎⠊⠝⠛⠀⠁⠃⠕⠧⠑⠀⠞⠓⠑⠀⠠⠑⠁⠗⠞⠓⠲⠀⠀⠠⠁⠝⠙⠀⠞⠓⠊⠎⠀⠎⠁⠍⠑
⠀⠞⠓⠊⠝⠛⠀⠊⠎⠀⠞⠓⠑⠀⠉⠁⠥⠎⠑⠀⠺⠓⠽⠀⠁⠞⠀⠉⠑⠗⠞⠁⠊⠝⠀⠞⠊⠍⠑⠎
⠀⠁⠀⠙⠊⠎⠞⠁⠝⠞⠀⠕⠃⠚⠑⠉⠞⠀⠺⠊⠇⠇⠀⠃⠑⠀⠓⠊⠙⠙⠑⠝⠀⠃⠑⠓⠊⠝⠙⠀
⠁⠝⠕⠞⠓⠑⠗⠀⠇⠑⠎⠎⠀⠙⠊⠎⠞⠁⠝⠞⠀⠕⠝⠑⠂⠀⠁⠝⠙⠀⠽⠑⠞⠀⠍⠁⠽⠀⠁⠞
⠀⠁⠝⠕⠞⠓⠑⠗⠀⠞⠊⠍⠑⠀⠃⠑⠀⠁⠃⠇⠑⠀⠞⠕⠀⠃⠑⠀⠎⠑⠑⠝⠂⠀
⠁⠇⠞⠓⠕⠥⠛⠓⠀⠞⠓⠑⠀⠎⠏⠕⠞⠀⠋⠗⠕⠍⠀⠺⠓⠊⠉⠓⠀⠊⠞⠀⠊⠎⠀
⠧⠊⠑⠺⠑⠙⠀⠊⠎⠀⠁⠇⠺⠁⠽⠎⠀⠞⠓⠑⠀⠎⠁⠍⠑⠲⠀⠠⠃⠥⠞⠀⠞⠓⠑⠀
⠗⠑⠁⠎⠕⠝⠀⠋⠕⠗⠀⠞⠓⠊⠎⠀⠑⠋⠋⠑⠉⠞⠀⠺⠊⠇⠇⠀⠃⠑⠀⠎⠞⠊⠇⠇⠀

These are the same pages the .brf download embosses — form-feed breaks and all. BRF opens in braille software (Duxbury, BrailleBlaster), on embossers, and on refreshable displays.