An old toy has inspired a powerful new weapon that could destroy submarines or annihilate tumours. Using a modified version of Newton's cradle, a series of stainless steel balls suspended by fishing ...

Scientists have created a powerful acoustic weapon called a "sound bullet" that could help kill cancer cells and down hostile submarines in war. Here's how the system is constructed: researchers lined ...

Taking inspiration from a popular executive toy ("Newton's cradle"), researchers have built a device -- called a nonlinear acoustic lens -- that produces highly focused, high-amplitude acoustic ...