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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.