It takes the average reader 5 hours and 23 minutes to read The Story of the Heavens by Robert S. Ball
Assuming a reading speed of 250 words per minute. Learn more
Sir Robert Stawell Ball was an Irish astronomer who founded the screw theory. In 1908 he published A Treatise on Spherical Astronomy, which is a textbook on astronomy starting from spherical trigonometry and the celestial sphere, considering atmospheric refraction and aberration of light, and introducing basic use of a generalised instrument. Ball became celebrated for his popular lectures on science. He gave an estimated 2500 lectures between 1875 and 1910 in towns and cities across Britain and Ireland.
The Story of the Heavens by Robert S. Ball is 316 pages long, and a total of 80,896 words.
This makes it 107% the length of the average book. It also has 99% more words than the average book.
The average oral reading speed is 183 words per minute. This means it takes 7 hours and 22 minutes to read The Story of the Heavens aloud.
The Story of the Heavens is suitable for students ages 12 and up.
Note that there may be other factors that effect this rating besides length that are not factored in on this page. This may include things like complex language or sensitive topics not suitable for students of certain ages.
When deciding what to show young students always use your best judgement and consult a professional.
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