Grauniad article about power interconnectors between UK and Europe

Colour blindness is not limited to a few colour combinations. There are many subtle rarer forms which most people either never notice, or rarely appear in the information or natural world.

Computer charting displaying multiple data sets can expose difficulty in recognising rarer forms. It is for this reason that typically "poster colours" are preferable over mere shades, and if possible other distinguishing features such as shading. Arts and Media crowd love to pick similar shades which can make distinction difficult on certain displays.

Cheapest TN panel displays only display 6-bit colour, and fool the idea into seeing (say) a shade of green. Viewing that colour in peripheral vision and it can appear yellow to most people (the display is using interstitial colour mapping to create a colour it can not naturally generate by being limited to 6-bit). Classic being the Thinkpad battery life bar, and it is particularly annoying to some people.

Many companies buy PVA or IPS monitors, which can display 8-bit colour. So a confounding factor can indeed be the display is junk :-) For me the worst problem was always with greys, and particularly sharp text (I find reading fuzzy inkjet easier than ultra sharp laser).

Reply to
js.b1
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Fracking has been used to increase the surface area of hot rock when water is injected and hot water removed. But in Iceland there are places where you can drill a hole and get usable (if sulphrous) steam out of it.

Reply to
newshound

it cools the earth down and that is not an infinite thing.

In short there is no renewable energy to be had anywhere - just things that last longer than other things.

In terms of geothermal the key thing is how fast the heat is actually replenished - there are some old flooded mines in IIRC poland and the USA that are being used to generate hot water...but after 20 years they reckon they will have cooled down to only produce a small fraction of the power, because they depend on essentially draining a HUGE heatbank faster than its being replenished.

Reply to
The Natural Philosopher

none of any note.

The earth is warm from there main ways: its still cooling from when it was made, it has a significant amount of radioactivity in it and the decay heat keeps it warm, and the sun shines on it.

actual squeezing it would essentially slow the moon down: that does happen of course and it results in tides which do have a small amount of energy in them. But not enough to make a discernible difference to temperature.

Reply to
The Natural Philosopher

You obviously didn't bother reading any further than wind.

I mentioned nukes, of course.

Reply to
grimly4

no point in having wind AND nukes tho, is there?

in fact there is no point in having wind, period.

As the Mercator report showed...

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for cheap, gas for low carbon reasonably cheap, nuclear for zero carbon reasonably cheap. No need for expensive high carbon wind!

Reply to
The Natural Philosopher

No. Just a rather deep hole.

Reply to
The Other Mike

En el artículo , Dave Liquorice escribió:

if the above line breaks,

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but it's also full of "sand" to keep the

If the fractures are (mostly) horizontal, would it matter?

Reply to
Mike Tomlinson

sheets...

That depends how big the earthquakes it releases are. Two on the flyde coast, felt on the surface, have been directly attributed to fracking in that area. "Blamed" on a previously unknown fault and "it will never happen again".So they know about *every* other single fault do they? oink flap oink flap.

Can't say I'm overly enamoured about all this gas that has been discovered. It's going to make energy cheap again and reduce investment in other energy sources and do nothing for how much ancient carbon is being dumped into the atmosphere. Dash for gas all over again but maybe on a global scale.

Reply to
Dave Liquorice

What magnitude were these?

Reply to
Tim Streater

Tiddly (2.3 and 1.5) but they have been directky attributted to fracking.

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second one raises a question about shale gas:

Friends of the Earth Cymru director Gareth Clubb "We know that shale gas is a lot more emissions intensive than the use of conventional gas, for example. And in many cases it would come in only slightly better than coal, or in some places worse than coal."

Any one know what that means or the science it is based on?

Reply to
Dave Liquorice

not a lot and of course 'directly related' means some bearded weirdie with shares in a solar panel firm says so.

Reply to
The Natural Philosopher

what makes you think anything FoE say is based on science?

Reply to
The Natural Philosopher

None, it's a Friends of the Earth quote, FoE being a faction that is by far the biggest threat to the future of this planet.

Gareth Clubb? Has he ever considered going to protect baby seals in Canada?

Reply to
The Other Mike

Google for 'hot rocks' rosemanowes Cornwall

Reply to
Chris Hogg

+1

Ah, Canadian club on the rocks?

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Reply to
The Natural Philosopher

shale

Nothing at all. I certainly don't take what FoE say at face value hence asking the question.

I don't know how "clean" shale gas is compared to say north sea gas, it may have a significantly different composition. Just like crude oil varies depending on which hole in the ground you get it from.

Reply to
Dave Liquorice

Not in this case, even the firm involved in the fracking says it was down to them:

From

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"The panel agrees with a Cuadrilla report from late last year that test fracks at the company's Preese Hall site did cause two earthquakes of Magnitudes 2.3 and 1.5 in April and May."

The panel being Prof Styles, Dr Baptie and Dr Chris Green and their biographies and report for DECC is linked from:

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Reply to
Dave Liquorice

That Tony Juniper was on the Toddy prog this a.m. He's saying that "a study" indicates it takes a lot of energy in in order to get the gas out. That appears to be the substance of the argument. It helps, of course, if you pick the right study.

Reply to
Tim Streater

So, barely noticeable, then. Anyone who's fussed by that should wait until they've been in a real earthquake.

Reply to
Tim Streater

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