News tagged with lens

A space-time magnifying glass

(Phys.org) —Bright arcs are smeared around the heart of galaxy cluster Abell S1077 in this image taken by the NASA/ESA Hubble space telescope. The arcs are stretched images of distant galaxies distorted ...

May 15, 2013 5 / 5 (5) 5

Breaking the rules for how tsunamis work

The earthquake zones off of certain coasts—like those of Japan and Java—make them especially vulnerable to tsunamis, according to a new study. They can produce a focusing point that creates massive and devastating tsunamis ...

Mar 07, 2013 3.7 / 5 (3) 2

Sound bullets in water

Sound waves are commonly used in applications ranging from ultrasound imaging to hyperthermia therapy, in which high temperatures are induced, for example, in tumors to destroy them. In 2010, researchers at Caltech led by ...

Nov 19, 2012 5 / 5 (8) 0 | with audio podcast