Liquid foam can block the transmission of ultrasound, report Valentin Leroy at Paris Diderot University and his colleagues. The French team created the foam by bubbling an insoluble gas, ...

Liquid foams have a remarkable property: they completely block the transmission of sound over a wide range of frequencies. Physicists have studied how sound is attenuated in liquid foams. Their ...

Bubbles are usually the first sign that water’s coming to the boil, but heating it in a microwave seems to skip this ...

Water bubbles on a stove because heat spreads unevenly, creating spots for steam. Microwaves heat water uniformly, often preventing bubbles and leadin ...

Carbonated drinks lose their fizz as dissolved carbon dioxide escapes after opening, a process governed by pressure and ...