Other Work
In 1671, or perhaps earlier, he established the theorem that
- ,
the result being true only if θ lie between −(1/4)π and (1/4)π. This formula was later used to calculate digits of π, although more efficient formulas were later discovered.
James Gregory discovered the diffraction grating by passing sunlight through a bird feather and observing the diffraction pattern produced. In particular he observed the splitting of sunlight into its component colours – this occurred a year after Newton had done the same with a prism and the phenomenon was still highly controversial.
Gregory, an enthusiastic supporter of Newton, later had much friendly correspondence with him and incorporated his ideas into his own teaching, ideas which at that time were controversial and considered quite revolutionary.
The crater Gregory on the Moon is named after him. He was the uncle of mathematician David Gregory.
Read more about this topic: James Gregory (mathematician)
Famous quotes containing the word work:
“‘Tis not need we know our every thought
Or see the work shop where each mask is wrought
Wherefrom we view the world of box and pit,
Careless of wear, just so the mask shall fit
And serve our jape’s turn for a night or two.”
—Ezra Pound (1885–1972)
“Oh sure, everyone goes back to the earth at some point, but life itself is a thread that is never broken, never lost. Do you know why? Because each man makes a knot in the thread during his lifetime: it is the work he has done and that’s what gives life to life in the long stretch of time: the usefulness of man on this earth.”
—Jacques Roumain (1907–1945)