We use cookies to provide you with a better experience. If you continue to use this site, we'll assume you're happy with this. Alternatively, click here to find out how to manage these cookies

hide cookie message
Contact Forum Editor

Send an email to our Forum Editor:


PLEASE NOTE: Your name is used only to let the Forum Editor know who sent the message. Both your name and email address will not be used for any other purpose.

Speakers Corner


It's free to register, to post a question or to start / join a discussion


 

Neutrinos win again


zzzz999

Likes # 0

As we approach an Olympic year a new pretender to the throne of sprint champion has emerged. Neutrinos have managed to repeat their feat from two months ago and have again beating the previous champion 'Speed of light'.

For many years we had thought speed of light, Like Ed Moses, was unbeatable. Now this young pretender has done it twice: the world of athletics has been turned on its head.

That old joke will need rewritten.....'Who's there'.....'knock knock'

Like this post
OTT_B

Likes # 0

john bunyan

I'm a long way from being any kind of expert in this area. But frm what (I think) I know, it's the mass of a neutrino that should make it impossible to exceed the speed of light, since mass becomes infinite at the speed of light, therefore requiring infinite energy to keep moving.

"Surely observations of the arrival of neutrinos and light from a supernova would have shown this phenomenon?"

I'm not sure. First you'd need a way to differentiate the neutrino's from the supernova from all the other neutrinos heading in from space.....

I was dubious about this discovery when the original results were published, and I'm still dubious now. Once independent verification has been completed and replicates the results, the world of physics will have to re-think its position. Until then....

Like this post
Aitchbee

Likes # 0

infinity and nothing are human concepts Let's not get above ourselves.

Like this post
OTT_B

Likes # 0

"infinity and nothing are human concepts"

Really? Sure about that?

Everything we say and do is a 'human concept' by virtue of the fact that we are all human (presumably!). But 'infinity', and especially 'nothing' are absolute. They are not like telling the time (which is a human construct in its context of being used to set an alarm clock) or defining wealth.

Like this post
john bunyan

Likes # 0

OTT_B I had temporarily forgotten your point that the faster an object, the heavier it is, and shorter, and that time lengthens such that theoretically at the speed of light an object would be of infinite mass, zero length and that time would stand still! I now remember Laurentz. A fascinating subject and I hope the likes of Brian Cox or Stephen Hawking could give some views on the TV.See here for Laurentz.

http://en.wikipedia.org/wiki/Lorentz_transformation

Like this post
Aitchbee

Likes # 0

I should have said infinity and nothing can be envisaged, or encapsulated into equations of a mathematical nature...but we, (humans) don't know what these things are...and, possibly, never will.

Like this post
Forum Editor

Likes # 0

OTT_B

"...it's the mass of a neutrino that should make it impossible to exceed the speed of light"

This thing about the mass of a neutrino is a contentious issue, to say the least.It used to be thought that they had no mass, but as I understand it, the current thinking is that a neutrino's mass is less than a billionth of the mass of an atom of hydrogen. That's an almost unbelievably small amount, which is just as well, as billions of neutrinos pass through your brain every second.

In February 1987 neutrinos from Supernova 1987A - an event that occurred in the Tarantula Nebula, 186,000 light years from earth - arrived about three hours before the first flash of light. That may have been because a collapsing star emits neutrinos before light, but it's intriguing, nevertheless.

Like this post
Aitchbee

Likes # 0

neutrinos don't piggy-back - so alan14,...your theory is scandalous! buses are not that fast.

Like this post
zzzz999

Likes # 0

Teslar was unconvinced with Einstein's theory.

Like this post
interzone55

Likes # 0

How do they know the neutrinos that were sent are the ones that were received?

Like this post
Aitchbee

Likes # 0

Don't know for sure, I would have thought...but I could be wrong, that the path of each neutrino is monitored on it's journey from Switzerland to Italy.Perhaps pulses of 100 are sent and received, then 'averaged out' for a 'typical speed'.

Like this post

Reply to this topic

This thread has been locked.



IDG UK Sites

Best Black Friday 2014 tech deals UK: Latest bargains on phones, tablets, laptops and more this...

IDG UK Sites

Tech trends 2015: 3D printing grows up

IDG UK Sites

25 iOS apps turn (Red) for World AIDS Day campaign

IDG UK Sites

Black Friday 2014 UK: Apple deals, Amazon deals & other Black Friday tech offers