Tag Archives | Neutrino

CERN’s Neutrinos Travel Faster Than Speed Of Light

EinsteinScientists making discoveries that defy the laws of physics seems to be something of a theme this month. Now the eggheads at CERN say they’ve observed subatomic particles moving faster than the speed of light, which might theoretically allow us to travel back in time. Eryn Brown and Amina Khan report for the LA Times:

Albert Einstein had the idea. A century of observations have backed it up. It’s one of the cornerstones of physics: Nothing travels faster than the speed of light.

But now a team of experimental physicists at the European Organization for Nuclear Research, known as CERN, says that one exotic particle possibly can.

The scientists reached their conclusion after sending streams of tiny, subatomic particles called neutrinos hurtling from an accelerator at CERN outside Geneva to a detector at the Gran Sasso National Laboratory in Italy, about 450 miles away.

The neutrinos seemed to get there too soon — 60 nanoseconds too soon, give or take — than they should if they’d been traveling at the speed of light.

Read the rest
Continue Reading

Observatory 1.5 Miles Deep Under Antarctic Ice

Photo: The National Geographic

Photo: The National Geographic

Some secrets of the universe may be found by looking underground. Under the South Pole to be exact. There, under the ice, is the world’s largest neutrino observatory used to find clues to cosmic mysteries and subatomic particles that can travel through almost any matter. Via The National Geographic:

An IceCube sensor is dropped into 1 of 86 holes drilled into the Antarctic ice in a December 2010 picture.

To reach the icy depths, scientists designed and built the Enhanced Hot Water Drill, which can penetrate more than 1.2 miles (2 kilometers) of ice in less than two days. The team then fed the IceCube detector—86 cable strings that each contain 60 neutrino sensors—into the holes.

Each cable is equipped with another four sensors at the surface, which together make up one IceCube array. The detector and arrays combine to make the IceCube Neutrino Observatory.

Situated at the geographic South Pole, the U.S.

Read the rest
Continue Reading