It is almost 100 years since scientists discovered the universe is expanding. In the decades that followed, the accuracy of ...

Physicists at the University of Southampton have tested and proven a 50-year-old theory for the first time using ...

First developed for World War II, motion detectors have come a long way from the radar that pilots used way back then.

A reproduction inflatable of American artillery, positioned to persuade the Germans to fire at dummy positions during the war ...

Only after a brief overview of the Doppler effect, [Shahriar] digs into the PCB which reveals three die-on-PCB ASICs responsible for generating and receiving 77GHz FMCW signals coupled to a 2D ...

In a study published in Nature Communications, physicists at the University of Southampton tested and proved a 50-year-old ...

Scientists have introduced a groundbreaking method for detecting gravitational waves using Mössbauer resonance, which is ...

Such a common experience in our everyday lives, the Doppler Effect has proved to be a major factor in demonstrating the existence of an ever-expanding universe. Simply put, the effect occurs when ...

The frequency of the returning signal typically changes based upon the motion of the raindrops (or bugs, dust, etc.). This Doppler effect was named after the Austrian physicist, Christian Doppler ...

This is the Doppler effect. When a jet aircraft’s speed exceeds the speed of sound (about 760 mph), the pressure it exerts upon the air produces a shock wave which can be heard as a loud supersonic ...

It’s why the pitch of a train whistle changes as it passes. Meteorologists use the “Doppler effect” with radar to determine if a raindrop is moving toward or away from the radar site.

This stretching of the wavelengths of light from other galaxies, known as “redshift”, is caused by the Doppler effect. This ...