Other Reflecting Instruments
Hadley's was not the first reflecting quadrant. Robert Hooke invented a reflecting quadrant in 1684 and had written about the concept as early as 1666. Hooke's was a single-reflecting instrument. Other octants were developed by Jean-Paul Fouchy and Caleb Smith in the early 1730s, however, these did not become significant in the history of navigation instruments.
Read more about this topic: Octant (instrument)
Famous quotes containing the words reflecting and/or instruments:
“Some may find comfort in reflecting that the distinction between an eliminative and an explicative physicalism is unreal.”
—Willard Van Orman Quine (b. 1908)
“Fashionable women regard themselves, and are regarded by men, as pretty toys or as mere instruments of pleasure; and the vacuity of mind, the heartlessness, the frivolity which is the necessary result of this false and debasing estimate of women, can only be fully understood by those who have mingled in the folly and wickedness of fashionable life ...”
—Sarah M. Grimke (1792–1873)