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Popular scientific lectures ⠃⠗⠋ 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

672,558 braille cells · 715 embossed pages at 40×25 · 1,972 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.