Friggin' radio waves: they're everywhere. Really, it's odd that your cordless phone even has that 2.4-GHz sticker. To your average, not-so-technically-inclined shopper, it's a number that means A ...

Depending on the type of radiation, however, different knowledge can be gleaned. Radio waves and microwaves, with their long wavelengths, allow scientists to see into dense molecular clouds where ...

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 ...