90% occlusion = half-brightness // 99% occlusion = quarter-brightness // 99.9% occlusion = 1/8th brightness // Eclipses, Audio Power, and the mathematics of Human Perception Updated 19 June 2024 | Published 8 April 2024 by M mathematics of Human Perception
The Seven Salem Solar Eclipse of 2017 – Michelle Gibson Updated 2 July 2024 | Published 12 March 2022 by M The Seven Salem Solar Eclipse of 2017