Waves in water are transverse. This means that the vibrations causing the waves are perpendicular to the direction of energy transfer. As this little boat demonstrates, you can see that the waves are ...

Dr Kevin Fong explains how sound waves could pose a real threat to astronauts and rockets in space. He uses the example of the Soyuz Rocket, and explains that as it travels through the atmosphere, the ...

Modern stealth starts with silence. In this episode, we unpack low probability of intercept - from simple emission control ...