twilight effect


Also found in: Dictionary.

twilight effect

An error in older-type radio compasses occurring at twilight because of ionospheric distortions during this period. The error is caused by the sky wave interacting with the loop antenna and giving an erratic reading of the radio compass. Also called a night effect
Mentioned in ?
References in periodicals archive ?
An installation of over 2,000 felt cones, each with a fibre-optic light, will glow just above head level, creating a twilight effect of intimacy and mystery, a statement said.
It's called the Twilight effect and did wonders for Robert Pattinson and Taylor Lautner.
The brothers Henry at Paris reported what they presumed to be a twilight effect.
Still, I found a beautiful Atkinson Grimshaw on show at Haynes of Broadway, a picture which caught perfectly this artist's distinctive end-ofthe-day twilight effect.