Pride pylons meant to spark conversation and alert the community to the extensive safety measures York Pride takes in ...

is their unique ability to reflect light as rainbow colors. It's certainly a cool look, but have you ever wondered how it happens? To answer this requires little more than some basic science know-how.

“This is referred to as interference — interfering with the ability to reflect,” Mr. Siegrist said. “The shimmering rainbow effect is caused by a second laser treatment, which creates a ...

For instance, the way diffractive waveguides disperse colors creates a rainbow effect, and the eye sees red, green and blue separately. In contrast, mirrors don't break up colors but reflect them ...