About This Book
The brilliant German mathematician Johannes Kepler (1571-1630), one of the founders of modern astronomy, revolutionized the Copernican heliocentric theory of the universe with his three laws of motion: that the planets move not in circular but elliptical orbits, that their speed is greatest when nea...
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Reading Time Estimates
6h 37m
slow reader
180 WPM
4h 46m
average reader
250 WPM
3h 24m
fast reader
350 WPM
π 71,500 wordsπ
10 days at 30 min/day
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WPM
Reading time
4 h 46 min
at 250 words per minute
Audiobook (1.5x)
5 h 18 min
at 1.5x narration speed
Audio 1x
7 h 57 min
Audio 2x
3 h 58 min
That's about:
- π 10 daysΒ reading 30 min/day
- π10 commutesΒ of 30 min each