It takes the average reader 6 hours and 40 minutes to read Yerkes Observatory, 1892-1950 by Donald E. Osterbrock
Assuming a reading speed of 250 words per minute. Learn more
Drawing on his experience as historian of astronomy, practicing astrophysicist, and director of Lick Observatory, Donald Osterbrock uncovers a chapter in the history of astronomy by providing the story of the Yerkes Observatory. "An excellent description of the ups and downs of a major observatory."—Jack Meadows, Nature "Historians are much indebted to Osterbrock for this new contribution to the fascinating story of twentieth-century American astronomy."—Adriaan Blaauw, Journal for the History of Astronomy "An important reference about one of the key American observatories of this...
Yerkes Observatory, 1892-1950 by Donald E. Osterbrock is 394 pages long, and a total of 100,076 words.
This makes it 133% the length of the average book. It also has 122% more words than the average book.
The average oral reading speed is 183 words per minute. This means it takes 9 hours and 6 minutes to read Yerkes Observatory, 1892-1950 aloud.
Yerkes Observatory, 1892-1950 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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