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  LiveWire / Teen Forums / Science & Business / Viewing Topic

Neutrinos
Replies: 7Last Post Oct. 7 4:28pm by holysaiyan1
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( Raza say )


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so really, when alpha rays for polonium i think bombard Be, then Neutrinos are produced along with another element. But Neutrinos have zero mass and charge. How so?

2:03 am on Sep. 28, 2008 | Joined Sep. 2008 | 17 Days Active
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holysaiyan1


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Neutrinos do have a non-zero mass, it's just very, very, very slight.  Scientists estimate that the mass of a neutrino is somewhere around 0.0027 eV, .  To compare, a proton has a mass of 938,272,310 eV, give or take a few.

Both the electrical neutrality and small mass of the neutrino can be explained by string theory.  Tiny Planck-sized strings vibrate in certain ways, in accordance with the laws of physics.  Each different way a string can vibrate makes a different kind of particle that behaves in different ways.  The string vibration that corresponds to neutrinos (generally speaking, because there are several different kinds of neutrinos) is such that the resulting particle has extremely small mass and is electrically neutral.

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7:07 am on Sep. 28, 2008 | Joined Jan. 2006 | 577 Days Active
Join to learn more about holysaiyan1 Ohio, United States | Straight Male | 3163 Posts | 18165 Points
( Raza say )


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okay.How is it electrically neutral? And why does it has zero charge?

4:53 pm on Sep. 28, 2008 | Joined Sep. 2008 | 17 Days Active
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Nerdandproud


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If you're not happy with the string theory explination and you want to think about it as a point particle

I think charge has something to do with the spin of the particle?


5:42 pm on Sep. 28, 2008 | Joined June 2008 | 79 Days Active
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holysaiyan1


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Quote: from Nerdandproud at 8:42 pm on Sep. 28, 2008

If you're not happy with the string theory explination and you want to think about it as a point particle

No, point particle theories have major problems, and have been scrapped long ago.  

You can't think of some particles as strings that are being viewed "from far away", such that they appear as points, and think as other particles as being a true point particle.  If you view anything from far enough away, it'll look like a zero-dimensional point, regardless of its true dimensions.


I think charge has something to do with the spin of the particle?

No.  Charge is a fundamental property of particles.  For example, all electrons, no matter what, have a charge of -1.  If one didn't, it would not be an electron.

Spin is another fundamental property, different from charge.  Basically, quantum spin is a measure of how fast all particles of a certain type spin.  For example, all electrons have a spin value of ½.  If an electron did not have a spin of ½, it would not be an electron.  Particles with spin never slow down or lose momentum, unlike spinning things at the macroscopic level.



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8:23 am on Oct. 5, 2008 | Joined Jan. 2006 | 577 Days Active
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Elm


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Instead of string theory can we talk about something that is able to be tested and therefore within the realm of science and not fantasy?

Thanks.


2:27 pm on Oct. 6, 2008 | Joined Dec. 2006 | 205 Days Active
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holysaiyan1


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Quote: from Elm at 5:27 pm on Oct. 6, 2008

Instead of string theory can we talk about something that is able to be tested and therefore within the realm of science and not fantasy?

Thanks.


If you have a better theory that fits all of the available data, then, by all means, submit it to a science journal.  You'll be the new Einstein.

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4:28 pm on Oct. 7, 2008 | Joined Jan. 2006 | 577 Days Active
Join to learn more about holysaiyan1 Ohio, United States | Straight Male | 3163 Posts | 18165 Points
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