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Vanilla Ice on 10/1/90 in Minneapolis, Mn. (Photo by Paul Natkin/WireImage)

Back in college I took a course on planetary and atmospheric dynamics. Although I don’t recall the course as well as I should (the class was extremely mathematical for my taste), one concept which has remained with me is is “albedo”–how well the planetary surface reflects solar radiation back into space. Albedo was a strange wild card in everyone’s computer models of planetary temperature and climate. Small changes in planetary albedo could lead to big temperature changes across the globe (as say when high-albedo ice sheets melt or when reflective white clouds form). Albedo isn’t just important in astrophysics: how well a surface reflects or absorbs radiant energy has engineering and economic implications down here at a human scale as well.


This awkward lede is an attempt to contextualize the potentially enormous importance of today’s color-themed topic. Researchers at Purdue University have invented a very, very bright shade of white paint. The color is so white that it reflects 98.1 percent of visible light. The color (which lacks a name, but should be called something like “great white”, “polar bare”, or “super dazzle”) is so radiant that surfaces painted with the compound are cooler than the ambient temperature of things around them. It is the polar opposite (snicker) of the ultra-black developed a few years ago.

The secret to this color is a molecular engineering trick. Barium sulfate is a safe and commonly used white pigment for makeup and coated papers. Engineers created a range of microscopically sized barium sulfate particles and then combined these differently sized particles into a single coating. The result was this glistening mirror white.

white glitter christmas abstract background

Now I can’t show you this color in a photo (since it wouldn’t make any sense on the luminous medium of your computer screen), but I get the sense that, like that super black, it has an unearthly look to it in the real world. Speaking of the real world there is no news yet on practical or saleable applications of the incredible ultra white (which makes me think it might prove hard to produce at scale). Yet the fact that it exists is exciting for engineers (and artists too). Let’s get to work making some more of this stuff so we can find out if is any good…and so we know whether we can solve our climate problems by painting Nevada and the Kumtag Desert shiny white!

Ye Olde Ferrebeekeeper Archives

September 2021