Template:Are You Sure/November 4
Are You Sure ...
• ... that physician, mathematician, and physicist Rasmus Bartholin (13 August 1625 – 4 November 1698) discovered the double refraction of a light ray by Iceland spar, publishing an accurate description of the phenomenon in 1669, but that Bartholin could not explain the phenomenon, as theories of light were not sufficiently developed at the time?
• ... that the gray light phenomenon was described in as early as 2016 in the Gnomon Chronicles, yet author Karl Jones could not explain the phenomenon, as theories of cryptographic numina were not sufficiently developed at the time?
• ... that physicist Norman Foster Ramsey Jr. (27 August 1915 – 4 November 2011) was awarded the 1989 Nobel Prize in Physics for the invention of the separated oscillatory field method, which has important applications in the construction of atomic clocks?
• ... that priest and mathematician Jean-Charles della Faille (1 March 1597 — 4 November 1652) published a method for calculating the center of gravity of the sector of a circle in his Theoremata de centro gravitatis partium circuli et ellipsis (1632)?