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Popular scientific lectures ⠃⠗⠋ braille edition

Grade 2 — contracted English braille (EBAE-compatible subset). Translated on this server by our own braille engine (BRF — Braille Ready Format, Library of Congress fdd000551). View Grade 1 instead.

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

566,524 braille cells · 598 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.