opacity

"This precise behaviour is obviously subject to our parametrization of these clouds as a vertically uniform grey opacity source," the authors write.

In response to Kaczynski’s sleuthing, the Harris campaign offered this response, a masterwork of opacity: “The Vice President’s positions have been shaped by three years of effective governance as part of the Biden-Harris Administration.”

Chief Justice John G. Roberts Jr. is doing his part to maintain the court’s opacity.

Some shrimp varieties don’t turn pink or orange when cooked, and some curl into tight spirals while others barely form a crescent when heated, so the best indicator is the shift from translucence to opacity.

That transition changes many of the liquid's properties, including its viscosity and opacity.