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?

Doppler velocimetry is a way to make sure that your baby is getting a healthy supply of blood. You may need it if earlier tests showed that your baby could be having problems. Maybe your baby is ...

“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 ...