This is invaluable for short-range weather forecasting or nowcasting. A simple mathematical expression, the Doppler equation, gives the change of frequency in terms of the motion of source and ...

Flapping frequency of birds, insects, bats and whales described by universal equation. ScienceDaily . Retrieved June 2, 2025 from www.sciencedaily.com / releases / 2024 / 06 / 240605162702.htm ...