“The range in brightness from the purple glow [of the sunset] to the dark sky above is too great for most films, and naturally it is beyond the range of printed pictures.” FilmDarkSkyRangeColourSunsetPurplePrintedBrightnessDark Sky Book:How to Use Your Eyes Source: How to Use Your Eyes
“A few moments before the sun sets, the dark Earth shadow begins to rise in the east... It is nothing less than the shadow of the entire Earth, cast upward onto the atmosphere itself... I saw it over the great plains, and I felt as if I could sense the Earth pivoting silently under my feet.” IfsMomentsEarthFeltDarkSunSawsFeetShadowCastsEastAtmosphereIf I CouldSun Set Author:James Elkins
“Most people would guess that the sun is fifty or a hundred times brighter than the moon, but it's a half million times brighter - evidence of the amazing capacity of our eyes to adjust to light and dark.” PeopleLightEyeDarkHalfMillionsSunMoonHundredEvidenceCapacityFiftyBrighterLight And Dark Book:How to Use Your Eyes Source: How to Use Your Eyes
