Tune into any TV weather report and you’ll hear the words “Doppler radar” as meteorologists track storms across California. But how does Doppler radar work? And how accurate is it?

“They cooked this one up – and push and pull it wherever they want using Nexrad (sic), Doppler and HAARP.” The post was liked more than 4,000 times in 10 days. It is not possible to control ...

The changing pitch of the note is called the Doppler effect. It is found in many contexts and is remarkably useful. In a binary system, two stars spin around each other. If the plane of rotation ...