It takes the average reader 3 hours and 55 minutes to read The Shadow of the Black Hole by John W. Moffat
Assuming a reading speed of 250 words per minute. Learn more
"Black holes are one of the extraordinary phenomena in the universe whose existence was surmised not by observations, but by theory. The black hole is a prediction of Einstein's 1915-1916 gravitational theory, general relativity, which replaced Sir Isaac Newton's gravity theory, published in his famous treatise Principia in 1687. In 1784, Reverend John Michell, a fellow of Queens' College and Professor of Geology at Cambridge University, had already envisioned what we now call black holes. He asked what would happen if a star's gravity were so strong that its escape velocity - the speed at which a rocket, for example, would have to travel to leave the star - exceeded the speed of light? Michell realized that any light emanating from the star would have to fall back to its surface. He speculated that the escape velocity would exceed the speed of light for a very massive star, making the star invisible to an observer"--
The Shadow of the Black Hole by John W. Moffat is 233 pages long, and a total of 58,949 words.
This makes it 79% the length of the average book. It also has 72% more words than the average book.
The average oral reading speed is 183 words per minute. This means it takes 5 hours and 22 minutes to read The Shadow of the Black Hole aloud.
The Shadow of the Black Hole 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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