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When the Bird Daylight Laser 200 emits a powerful green light that hits bird feathers, it makes a bright splash of light. Which traumatizes them and they can't fly away fast enough. A flock of more than 100 geese immediately took flight..
Spatial coherence also allows a laser beam to stay narrow over great distances (collimation), enabling applications such as laser pointers. Lasers can also have high temporal coherence, which allows them to emit light with a very narrow spectrum, i.e., they can emit a single color of light.