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.Neutrinos are slowing down
Posted Mar17-12 at 06:36 AM by DennisN
"The only problem with the speed of light, is it gets here too early in the morning." - Danny Neaverth
News came in yesterday that the supposed faster-than-light neutrinos seem to have slowed down a bit;
"The ICARUS experiment at the Italian Gran Sasso laboratory has today reported a new measurement of the time of flight of neutrinos from CERN to Gran Sasso. The ICARUS measurement, using last year’s short pulsed beam from CERN, indicates that the neutrinos do not exceed the speed of light on their journey between the two laboratories. This is at odds with the initial measurement reported by OPERA last September." CERN Press Release (16 March 2012)
The CERN press release states that further measurements are planned in May to give a final verdict.
These were the four main reasons why I personally suspected that the initial OPERA result was a measurement error:
1. The measured speed was so very, very close to the speed of light; approx. 1.000024c (Sep 2011).
2. The experiment setup is very complicated, which means many possible sources of error.
3. Neutrinos are difficult to study.
4. Special relativity.
It seems Einstein is about to win yet another round.
See also:
News came in yesterday that the supposed faster-than-light neutrinos seem to have slowed down a bit;
"The ICARUS experiment at the Italian Gran Sasso laboratory has today reported a new measurement of the time of flight of neutrinos from CERN to Gran Sasso. The ICARUS measurement, using last year’s short pulsed beam from CERN, indicates that the neutrinos do not exceed the speed of light on their journey between the two laboratories. This is at odds with the initial measurement reported by OPERA last September." CERN Press Release (16 March 2012)
The CERN press release states that further measurements are planned in May to give a final verdict.
These were the four main reasons why I personally suspected that the initial OPERA result was a measurement error:
1. The measured speed was so very, very close to the speed of light; approx. 1.000024c (Sep 2011).
2. The experiment setup is very complicated, which means many possible sources of error.
3. Neutrinos are difficult to study.
4. Special relativity.
It seems Einstein is about to win yet another round.
See also:
- 'Faster-than-light' particles fade after cross-check (PhysOrg, 16 March 2012)
- ICARUS Refutes OPERA's Superluminal Neutrinos (Tommaso Dorigo's blog on Science 2.0)
- Faster-than-light neutrino anomaly (Wikipedia)
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