Comments for en-gb 30 Sun 30 Aug 2015 11:40:17 GMT+1 A feed of user comments from the page found at richard I no longer believe science; whether something is true or not is beyond me and not important. I regard scientic ideas as poetry and scientic artifacts as sculpture or wall hangings. We have lived many generations without science; most of the goods that now come from or through science do nothing more than correct the ills civilisation has created.On balance, the journey hasn't been worth the pain and suffering.richard Wed 20 Apr 2011 09:28:58 GMT+1 Robin johnson This post has been Removed Sun 17 Apr 2011 16:19:07 GMT+1 NorthernSeaMist This post has been Removed Fri 15 Apr 2011 11:38:10 GMT+1 Stephen Allen A fascinating program generating some equally interesting comments here. I was stunned by the revelation Neutrinos were originally considered to have no mass. The conceptual change from no mass to some mass (however small) seems huge. However a review of data about Neutrinos in the editions of Astrophysical Quantites (AQ) seems to confirm this.AQ 1955 Atomic mass not providedAQ 1963 Atomic mass = 0.0AQ 1973 Atomic mass = less than 10 to the power -6Curiously, in the 1955 and 1963 editions, AQ provides data on electron mass for each of the atomic components but this is omitted from the 1973 edition. Fri 15 Apr 2011 07:32:57 GMT+1 David Correction to my earlier comment. There are ten THOUSAND or more bacteria (10 to the 14) in each human than the numbers of humankind, 6 or 7 billion, plus untold trillions of bacteria elsewhere driving the planet's systems. Thu 14 Apr 2011 17:36:28 GMT+1 Barman With reference to the neutrinos not interacting with a light year of lead; would a neutron star's core be dense enough for large scale neutrino collisions? Thu 14 Apr 2011 16:55:07 GMT+1 David An admirably concise, clear and biographical survey of the neutrino. The neutrino and also any other miniscule-mass particles travelling at near the speed of light will inevitably concentrate at the periphery of the universe. As explained they can move even faster than the local speed of light (Cerenkov effect). They are not slowed down by matter. The latter is comparatively static and what we see. Atomic matter blocks and slows other atomic matter. It is illuminated as suns and galaxies. It is an open filter for speedy neutrinos. More and more non-atomic particles like neutrinos will stream through the filter and race to the periphery of the universe. Neutrinos are only one of many hypothesized, non-baryonic particles, the difference being that neutrinos have been detected. Others haven’t, yet.Why is this neutrinal periphery significant? The total mass of neutrinos is perhaps greater than the universe’s atomic matter. One effect is a contribution to the observed acceleration of the expansion of the universe. The larger mass travels fast to the periphery. Like spraying paint from a paintcan at the centre of a sphere, the outer skin becomes heavier as the can empties. The neutrinal periphery would exert increasing gravitational forces on what we normally consider the real or star-filled baryonic universe. The neutrinal periphery would look invisible but be the equivalent of an increasingly heavy cloud at the fast receding edge of the universe travelling at near the speed of light. Conceptually it could be considered as a growing cloud of super-tiny gravitational magnets (to use a simile mixing the force fields). A subsequent effect would be that the neutrinal periphery would act like quantum messengers retaining data from their creation and interactions. Thus the periphery of the universe would increase in its information concentration compared with our own perspective. The periphery is becoming the data cortex of the universe.Atoms or baryons are a minor part of the universe. The universe has not only neutrinos but still unexplained dark matter and dark energy. Safe from violent cosmic radiation, Man is a minor but unique part of this special planet, itself a minor but well-sited speck in a privileged solar system in an exactly well-positioned part of a galaxy, ideally distanced from others. Humankind now has a record-breaking 6 billion exemplars but each human being has ten times that number of bacteria in his/ her body. Numerically humans are a practically inconsequential minority among all life forms. Yet each human is different and we would say important. Each neutrino’s quantum characteristics are identified uniquely by its creation and interactions. Thus they too are all different. They have our measure. Thu 14 Apr 2011 16:27:30 GMT+1 PJ46 What a most entertainig programme on the adventures of Neutrino!Melvyn Bragg's guests are natural born storytellers. The BrothersGrimm would have been very impressed. Thu 14 Apr 2011 13:00:33 GMT+1 barriesingleton The programme opened with the 'given' that the Sun is nuclear. Thus it emits Nutrinos.The programme ended with a quote that in cosmology you don't find what you expect, after - in passing - mentioning the Japanese generatinng a beam of Nutrinos ELECTRICALLY.I have given up asking Melvyn to air the alternative cosmolgy in which stars (hence supernovae) are electric. But to any one reading this with an enquiring mind Thu 14 Apr 2011 08:52:41 GMT+1 rwalder This post has been Removed Thu 14 Apr 2011 08:50:45 GMT+1 awpennin An excellent program. I thought Susan Cartwright in particular was superb. Thu 14 Apr 2011 08:43:55 GMT+1 Robin Dear MelvynPlease ask her about the relationship between neutrinos and midi-chlorians. Could they be the same thing?RobinJedi Knight Thu 14 Apr 2011 08:38:59 GMT+1 Sandy Taylor How did the discussion group today get through the part about Professor Ray Davis looking for sun particles without mentioning that he did his best experiments on a sunny afternoon? Thu 14 Apr 2011 08:38:49 GMT+1 Epona11 A joke thought up in a AS science class recently: A neutrino walks into a bar... and goes straight through it... :) Thu 14 Apr 2011 08:31:12 GMT+1