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COVID-19 / what are the relative effects of recovery and vaccines reduction of threat

« on: 01/12/2020 18:24:29 »

I have tried to get an answer to this question from every supposed authority/web site/ radio programme/tv programme ad nauseam with no luck. If someone has recovered from covid, had anti bodies, has been free of symptoms for at least 2 weeks, why do they have to quarantine/isolate 2 weeks when visiting another jurisdiction? My Swedish based son cannot come to Canada to see me although he has had all the above. No one will say when he will be acceptable. No one will say whether a vaccinated person has the same conditions, although the suggestion is that once vaccinated everything will be all right again. What is the difference between the two in terms of threat to another population? One person told me that the recovered person could get the disease again which was why they couldn't come, but that will be true of everyone who has had it, so that's the end of the tourist industry. Vaccinated people could also get it again =- a few of them - so will the same apply to them?
I can't see the elites following these rules.Does BJohnson think he can go anywhere now? The media should keep careful watch on who among our 'better/richers' go away fro Xmas and don't isolate, or go anywhere outside their own jurisdictions, and make examples of them until,they come up with rules for the above that make sense for everyone.

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Physiology & Medicine / Re: WHy do certain frequencies of sound make us feel different emotions?

« on: 01/11/2020 04:28:21 »

alancalverd
I'm not sure the whining from the past is the main reason although ti may contribute on occasion because although one feels sad during minor passages one often also feels  the beauty - (what do I mean by beauty?perhaps indefinable/ touches something we can't put into words) of the sound - especially if it calls up bittersweet experiences  - or we wouldn't listen to it any more than we would want to go on listening to whingeing.

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Physiology & Medicine / WHy do certain frequencies of sound make us feel different emotions?

« on: 31/10/2020 21:14:09 »

Why do certain musical chords/notes/melodies make us feel different emotions and are they consistent over different cultures? What is it about minor chords, for example, that makes us feel sad? I have read things about this - eg Music on the brain - by various authors - but while they show what happens in the brain in different aural scenarios they don't give any explanations as to WHY emotions are caused by different sounds. Perhaps that's not something science can address.

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Physiology & Medicine / Re: is there any evidence for genetic memories?

« on: 25/10/2020 04:28:02 »

alancalvert
I wasn't suggesting I was responding to the supposed spiritual uses of these monuments although they may have had significance for their builders in those terms. Yes, they probably had a lot of practical uses.It's more a feeling of amazement at being able to touch things that have been worked on and shaped by people 5000 years ago. I held a stone at Skara Brae once that someone had used to grind grain on another stone- it had the impressions of the user's fingers worn into the stone -and i could put my own fingers into the grooves. 5000 years later. That was something I would never get the same feeling from something from somewhere else.
ANyway, I was just curious.

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Physiology & Medicine / Re: is there any evidence for genetic memories?

« on: 25/10/2020 04:20:55 »

Halc
your flatworm ref. could have something to it. I ought to look into it further. I know Rupert Sheldrake writes about this sort of thing.

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Physiology & Medicine / Re: is there any evidence for genetic memories?

« on: 25/10/2020 04:19:30 »

Halc
perhaps. I don't have any emotional reaction to pyramids - not in the same way I do to the British monuments. And it's not through long familiarity or thoughts of home - I haven't lived in Britain for decades but I used to live near Stonehenge as a child and went there often on my bike before all the barbed wire and gift shops. Even just seeing them on tv has a similar effect

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Physiology & Medicine / is there any evidence for genetic memories?

« on: 24/10/2020 18:07:40 »

Is there any evidence -(and I don't know how this would be discovered!)for some kind of genetic memory for places/situations/people/ etc.? When i watch programmes about or visit historical places like Orkney or Stonehenge I have quite different reactions than I had seeing the pyramids or other impressive buildings/places that are out of my cultural sphere. I know my ancestors are from the north and thousands of years ago may have lived in Shetland/Orkney or somewhere in the Scottish islands. When i visited the Hebrides, too, I had the same sort of emotional reaction to the standing stones, circles etc. as i have to places like Stonehenge which recent programmes on tv suggest were probably constructed by descendants of the same people who lived in Orkney when it was quite a centre of a neolithic civilization. I have visited places in the middle east that are just as old but do not have the same involuntary emotional response to them although they are just as impressive. Is there any,even speculative theory about why one would react in this way to structures in pone's own historical environment independently of the actual appreciation of skill and technological ability of ancient builders

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Physics, Astronomy & Cosmology / How does 'the math' explain complicated physics theories

« on: 19/05/2020 17:48:46 »

 Physicists like Brian Greene (Until the End of Time etc.)  in lectures, discussions online . frequently 'explain' concepts like string theory that have no experimental evidence by saying  it's all there in 'the math'. Sometimes graphics help visualize the concepts but in terms of evidence to justify the ideas, understanding stops at 'the math'. Is there anywhere ordinary non mathematicians can learn enough about 'the math' to see how the equations explain physics concepts that have no experimental evidence or are difficult to grasp ?
And what is meant b y a 'beautiful equation'? Are there any simple examples?

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Physics, Astronomy & Cosmology / Re: Can new telescope show there was something before the BBang?

« on: 16/05/2020 18:25:05 »

You may have fallen into the apostasy of geocentrism! If we are 10 BLY away from the epicentre of the BB, there will be little green men at least that far away on the other side.

no,but  perhaps little green women

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Physics, Astronomy & Cosmology / Re: Can new telescope show there was something before the BBang?

« on: 16/05/2020 05:53:19 »

But still, I find it difficult to take in talk of 20 billion LY away when the BB was 13-14 bly ago - can't get rid of the thought that suggests there was/is something beyond the Bbang 'out there'.
And how are these distances calculated?
probably I'm naive about this but how is the layman to cope with this idea?

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Physics, Astronomy & Cosmology / Re: Can new telescope show there was something before the BBang?

« on: 15/05/2020 05:14:27 »

So does that mean it might not actually exist any more because we're just seeing what was there 4b LY ago?

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Physics, Astronomy & Cosmology / Can new telescope show there was something before the BBang?

« on: 15/05/2020 01:27:51 »

I heard on a podcast that the James Webb telescope can see more than 14 billion years away. Does this mean that there is something it  (and we) might see that came before the big bang?And if so what  does this do to the origin of the universe theories?

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General Science / Re: why are omega fatty acids called Omega?

« on: 08/12/2019 05:15:02 »

Thanks. I knew it was the last letter but didn't know the connection. Interesting!

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General Science / why are omega fatty acids called Omega?

« on: 08/12/2019 01:26:21 »

As per topic heading .....

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Physics, Astronomy & Cosmology / WIll the rogue waves from the sun affect auroras?

« on: 07/12/2019 21:59:46 »

Nasa's Parker Solar probe is recording some strange sun activity. WIll the 'rogue' characteristics of this activity affect the aurora?

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Physiology & Medicine / how can microscale vessels be actually made?

« on: 18/11/2019 17:39:52 »

microscale vessels carrying acoustic waves and oscillating bubbles are benkig developed to carry meds. to precise locations in the body. great! But how can such things be actually made? they can only be seen with high powered microscopes so how can anything handle them let alone insert anything into them? I have read about the composition of the nano vessels but nowhere does anything say how these things are actually constructed - is there a special machine? They are quite complicated.

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Physics, Astronomy & Cosmology / Re: Do things stop decaying in space?

« on: 10/11/2019 05:05:14 »

So if an astronaut  left the space station and couldnt get back, or anyone's body was just let go in space would it freeze and stay like that for ever? Would it move or stay in one place?

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Physics, Astronomy & Cosmology / Do things stop decaying in space?

« on: 09/11/2019 22:29:35 »

I heard someone today saying, when talking about Voyageur 2, that it would go on travelling in space for billions of years. This suggests that it will never break down/'decay,change. is this true of anything that gets into space?

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Technology / Re: Do new fridges still need good air circulation space around them?

« on: 24/10/2019 05:16:12 »

Are you on about a fridge or freezer?

I am talking about a fridge and the freezer compartment either at top or bottom

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Technology / Do new fridges still need good air circulation space around them?

« on: 23/10/2019 23:21:42 »

havnig to buy a new fridge after mine gave up (29 years old) I was unfamiliar with the new ones. the condenser coils are now enclosed at the back and the salesman said i wouldn't need any space for air to circulate , or at the sides. Is this true? Doesn't lack of air circulation mean more energy is used? Also he says a bottom freezer space does not use more energy than a top one, although some energy guides say the opposite because he compressor motor is at the bottom.??