A frequency comb is a special kind of laser light whose spectrum, or set of frequencies, resembles the teeth of a comb. Instead of containing just one colour (one frequency), it emits a large number ...

“The future belongs to those who believe in frequency,” was the phrase emblazoned across the wall of a conference room I’d just been sitting in. Not a yoga retreat. Not a spiritual ceremony. A ...

A single universal equation can closely approximate the frequency of wingbeats and fin strokes made by birds, insects, bats and whales, despite their different body sizes and wing shapes, researchers ...