Dashing the dream of ideal 'invisibility' cloaks for stress waves

Whether Harry Potter's invisibility cloak, which perfectly steers light waves around objects to make them invisible, will ever become reality remains to be seen, but perfecting a more crucial cloak is impossible, a new study ...

Sun, moon and sea as part of a 'seismic probe'

Looking inside the Earth requires a signal that can penetrate rocks, minerals and other opaque material. Seismic waves represent such a signal. By recording them with a seismometer, researchers can draw conclusions from the ...

page 3 from 4