Definition: Apochromatism means "the ability to perceive two colors simultaneously." It's a concept found in the Bible where the sun, moon, stars, and planets are said to be different hues or colors, differing only by their angle (or pitch) relative to each other. This is due to the Earth being rotated on its axis, causing the Sun to appear as a point source while the Moon, Jupiter, and Saturn rotate slightly in relation to it. The word "apochromatism" refers to the process of seeing two colors at once or experiencing colors that are not the same color but somewhat close. This is due to the Earth's rotation on its axis causing stars and planets to appear as point sources instead of being spherical, a characteristic observed by astronomers and artists in various cultures around the world.