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Solar flare threatens to disrupt Earth's communications and power



 
 
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  #62  
Old June 10th 11, 10:48 PM posted to uk.tech.digital-tv,uk.tech.broadcast
Paul Ratcliffe
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Default Solar flare threatens to disrupt Earth's communications and power

On Fri, 10 Jun 2011 18:41:50 +0100, Bill Wright wrote:

Which you can see in the difference between spring and neap tides,
when the solar and lunar influences combine and cancel respectively.
Without the moon our tides would be about a quarter as big, and at
the same time every day.


Since the moon is about the same size as the sun when viewed from the
earth, surely the two bodies should exert the same gravitational forces
on the earth.


Since when did the diameter of any two bodies have any influence on
the gravitational force between them?
It is proportional to the product of their masses and inversely proportional
to the square of the distance between their centres of mass.

What did you teach again? Not phsysics?
  #63  
Old June 10th 11, 10:50 PM posted to uk.tech.digital-tv,uk.tech.broadcast
Paul Ratcliffe
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Default Solar flare threatens to disrupt Earth's communications and power

On Wed, 8 Jun 2011 11:13:10 +0100, Rick wrote:

http://www.telegraph.co.uk/science/space/8563072/Solar-flare-threatens-to-disrupt-Earths-communications-and-power.html


A "coronal mass injection"? Bloody useless journo *******...
  #64  
Old June 10th 11, 11:13 PM posted to uk.tech.digital-tv,uk.tech.broadcast
J G Miller[_4_]
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Default Solar flare threatens to disrupt Earth's communications andpower

On Friday, June 10th, 2011 at 21:22:57h +0100, Andy Champ wrote:

JG, there are good arguments for China's "one child" policy.


Good in what sense though?

Ethically good? Morally good? Good for human rights?

The end never, ever justifies the means.

They have the kind of government that can pull it off.


Indeed so, the kind of government which has killed at least
60 million of its own people.

Surely that is the only kind of population control which is both
meaningful and significant in terms of curbing over-population?

And yes, it's unpleasantly brutal.


And having profound effects on the future of society of the
People's Republic of China. Since one child per family means
that there is a definite skewing of the gender of the population,
it means that young men have great difficulty in find wives,
thereby curbing further population growth even more.

Soylent Green is PEOPLE!!


But is it tasty as well as being nutritious?
  #65  
Old June 10th 11, 11:30 PM posted to uk.tech.digital-tv,uk.tech.broadcast
J G Miller[_4_]
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Posts: 5,296
Default Solar flare threatens to disrupt Earth's communications andpower

On Friday, June 10th, 2011 at 20:50:56h +0000, Paul Ratcliffe asked:

A "coronal mass injection"?


If you do a web search for the exact phrase, including the quotes
to ensure an exact match,

"we got a big coronal mass injection"

you see that numerous newspapers, including The Daily Telegraph,
about 304 different, have all done a cut and paste from the same source.

So the question is, did Bill Murtagh really say "injection" instead
of "ejection", or did the source journalist mishear what he said,
or make a mistake in transcribing the description given by Bill Murtagh?

Perhaps as a BBC person you would like to telephone him on (303) 497 7492
and ask him if he really did say "injection" and if he did not, what his
reaction is to being misquoted hundreds of times.
  #66  
Old June 11th 11, 01:16 AM posted to uk.tech.digital-tv,uk.tech.broadcast
Bill Wright[_2_]
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Default Solar flare threatens to disrupt Earth's communications and power

J G Miller wrote:
On Friday, June 10th, 2011 18:35:15 +0100, Bill Wright
continued with his right wing myths:

No-one forced the working classes to leave the fields and
go down the mines.


The common people were forced off their common land by the acts of
enclosures passed by the Westminster Parliament at the behest of the
local landowners, thereby leaving the common people no alternative to
starving other than to go down the mines or into the factories.


The enclosures didn't mean that the farms could operate without labour.


The poverty of the pre-industrial rural masses was far worse than
the conditions after the industrial revolution.


The living conditions of most common people in the urban areas
during the industrial revolutions were no better than slums and
was far worse than the homes they had left behind in the countryside.

That wasn't the case.

Bill
  #67  
Old June 11th 11, 02:59 AM posted to uk.tech.digital-tv,uk.tech.broadcast
Bill Wright[_2_]
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Default Solar flare threatens to disrupt Earth's communications and power

Nick Leverton wrote:
In article ,
Bill Wright wrote:
Richard Tobin wrote:

Which you can see in the difference between spring and neap tides,
when the solar and lunar influences combine and cancel respectively.
Without the moon our tides would be about a quarter as big, and at
the same time every day.

Since the moon is about the same size as the sun when viewed from the
earth, surely the two bodies should exert the same gravitational forces
on the earth.


Two immediately obvious reasons:

Firstly, mass increases as the cube of radius, but apparent radius
decreases linearly with distance.


Ah so that's why elephants and mice react differently when they hit the
ground...

Bill
  #68  
Old June 11th 11, 03:07 AM posted to uk.tech.digital-tv,uk.tech.broadcast
Bill Wright[_2_]
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Posts: 9,437
Default Solar flare threatens to disrupt Earth's communications and power

Andy Champ wrote:

Having read through the thread:
Bill, You need something else to tie the dynamo to.


Yes, it would be necessary to mount it on a turntable driven by a small
electric motor. This would compensate for the rotation of the earth. It
wouldn't use much electricity because it would only need to turn a full
circle once a day. It could be on a circular track like at Jodrell Bank.

Bill
  #69  
Old June 11th 11, 03:11 AM posted to uk.tech.digital-tv,uk.tech.broadcast
Nick Leverton
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Posts: 11
Default Solar flare threatens to disrupt Earth's communications and power

In article ,
Bill Wright wrote:
Nick Leverton wrote:
In article ,
Bill Wright wrote:
Richard Tobin wrote:

Which you can see in the difference between spring and neap tides,
when the solar and lunar influences combine and cancel respectively.
Without the moon our tides would be about a quarter as big, and at
the same time every day.
Since the moon is about the same size as the sun when viewed from the
earth, surely the two bodies should exert the same gravitational forces
on the earth.


Two immediately obvious reasons:

Firstly, mass increases as the cube of radius, but apparent radius
decreases linearly with distance.


Ah so that's why elephants and mice react differently when they hit the
ground...


You've got it in one, or else the cube root of one, as the case may be.

Nick
--
Serendipity: http://www.leverton.org/blosxom (last update 29th March 2010)
"The Internet, a sort of ersatz counterfeit of real life"
-- Janet Street-Porter, BBC2, 19th March 1996
  #70  
Old June 11th 11, 03:15 AM posted to uk.tech.digital-tv,uk.tech.broadcast
Bill Wright[_2_]
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Posts: 9,437
Default Solar flare threatens to disrupt Earth's communications and power

Paul Ratcliffe wrote:

Since when did the diameter of any two bodies have any influence on
the gravitational force between them?

Since when? Are you saying that physical laws can change with time? I
didn't know that. I thought they were immutable, like the the old woman
who wouldn't shut up.

What did you teach again? Not phsysics?


1. No, I taught spelling. Did you mean fizziks?
2. What's happened to your well-known sense of fun? Did my North Pole
power generation idea not tip you the hint that I was not entirely serious?

Bill
 




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