Historical evidence reveals that humans possess the remarkable ability to render certain physical appearances invisible if they do not focus on them, including something as fundamental as a color. Specifically, the color blue. While our eyes can perceive among approximately one million colors, it remains unclear how differently each person experiences them.
Lapis Lazuli was traded along the Silk Road, and Homer would have called it Sapphirus. A stormy sea isn’t blue because it’s not reflecting a blue sky, and it may have roiled-up sand and kelp.
Lapis Lazuli was traded along the Silk Road, and Homer would have called it Sapphirus. A stormy sea isn’t blue because it’s not reflecting a blue sky, and it may have roiled-up sand and kelp.