air wedge

air wedge

[′er ‚wej]
(optics)
A wedge-shaped film of air between two flat reflecting surfaces that produces an interference pattern consisting of a series of light and dark bands parallel to the thin edge of the wedge.
Mentioned in ?
References in periodicals archive ?
If you're on your own, it's tricky, but the Easy Air Wedge (PS11.
The Easy Air Wedge is a small, inflatable bag that can safely lift a whopping 120kg.