Ottawa Boy's Invisible Invention Warns Birds About Deadly Windows

From CBC | Technology & Science News:

Eighth grader Charlie Sobcov wants to stop birds from dying in collisions with windows, but he doesn't want to ruin anybody's view. For his latest school science fair project he has invented painted, plastic decals that can be placed — discreetly — right in the middle of a window pane. "This paint is a colour that birds can see but humans can't," he said Wednesday on CBC Radio's All in a Day. "It's like putting a big stop sign in the middle of the window." The colour is ultraviolet, beyond the range of colours visible to humans. That means the "stop sign" lets birds know the window is solid, but is nearly invisible to humans. Similar flying falcon-shaped decals already exist on the windows of some buildings, but unlike Sobcov's, they are black and can obstruct part of the window.

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