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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.