The Square Kilometre Array Observatory will be the world's largest radio observatory, spread across two sites in separate countries and supported globally.

Back to our radio signal. The electrons in our wire are moving, but not in one direction. These electrons are moving back and forth. Actually, the wave displayed in the activity is a ...

Bluetooth uses radio waves because radio waves pass through walls but the signal is weakened on doing so. Optical fibres (visible light to infrared) are used for cable television and high-speed ...

Radio waves could allow robots or autonomous vehicles to see through thick smoke, intense rain – or even around corners. Such waves can even detect concealed weapons. But simulating visual ...

So, instead of using ultrasound, radio waves are used as they travel at 300,000,000 m/s. It works in the same way as sonar but with radio waves in place of ultrasound. A short pulse of radio waves ...