Abstract
Galileo Galilei was born in Pisa in 1564, the year Michelangelo died. In the same year Shakespeare was born. His father, Vincenzo Galilei, was a talented musician with unorthodox views on music, and a generally independent mind. In one of his books (Dialogo della musica antica e della moderna) he wrote: those who try to prove an assertion by relying simply on authority act very absurdly.
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Notes
- 1.
M. White, Galileo ANTICHRIST, (Phoenix), 2009. The interested reader will find references to the original texts in White’s book.
- 2.
We now know that the period of such a pendulum increases in proportion to the square root of the length of the pendulum.
- 3.
see Footnote 1.
- 4.
The first to construct a working clock using a pendulum was the Danish physicist Christian Huygens, who also published (in 1673) a book on the subject: Horologium Oscillatorium.
- 5.
see Footnote 1.
- 6.
Strictly speaking, here and throughout this chapter, by motion of the rolling sphere we actually mean motion of the centre of mass of the rolling sphere. Because of the rolling aspect of the motion, extrapolating the results obtained for rolling spheres on an inclined plane to free fall, is not at all an obvious proposition. It is fully explained only in the context of Newton’s mechanics (see exercise 7.12).
- 7.
In the experiments of Galileo the inclined plane could not be very steep, in order to secure a rolling motion of the ball (avoid sliding which complicates the motion).
- 8.
see Footnote 1.
- 9.
Evangelista Torricelli, then in his early thirties, would later become grand-ducal mathematician at the Tuscany Court. He is rememberd for his discovery of the barometer.
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Modinos, A. (2014). Galileo: His Life and Work. In: From Aristotle to Schrödinger. Undergraduate Lecture Notes in Physics. Springer, Cham. https://doi.org/10.1007/978-3-319-00750-2_4
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