Well, men may have some sort of kinetic advantage in straight downhill racing, but the way we ski, we turn. The less you turn, the faster you go, until you can't stand it any more, or you crash. So going fast is a matter of technique and risk. But I suspect she'll catch up in a year or two. Time is on her side.
All sorts of cool things are prevented by fear.
John
Why are all the cool breakthroughs a decade or two away?
And why is it that actual breakthroughs weren't predicted 10 or 20 years in advance?
John
ay
Very odd name, not a joke. Also about pinch effect.
Isn't any hydroelectric dam ALREADY using a storage lake?
Why shuffle water to another lake and call it stored energy?
Why not just shut off the sleuce for 2 of 6 turbines at night so that flow backs up in the reservoir behind the dam?
Please explain how additional storage lakes work.
Sounds like it has great potential but what's the logic?
Geosynchronous communication satellites were predicted by Arthur C Clarke in 1945.. the first was launched in 1964.
The iPad spec is remarkably similar to a spec for the perfect computer drawn up by someone in approximately 1990.
Or to the NewsPad, also dreamed up by ACC in the movie 2001: A Space Odyssey (1967).
Cheers
Phil Hobbs
Why would the mass need to be liquid ?
Just build an electric railway up to a high plateau. During the night run the trains loaded with some heavy material (such as depleted uranium) up to the high plateau. During the day, let the same trains return down using regenerative breaking :-).
In order to keep the air resistance at manageable levels, the train can not go very fast, so the track would have to be pretty steep.
The price IIRC is dropping around 16% a year. And there seems to be no lower bound visible.
They aren't. If you keep your eye on PV you will see it happening week by week.
And used in Star Trek some decades previously, along with clamshell cellphones.
In this modern reduce/re-use/recycle "greenie" era, from the hydro generation pov you could call it recycling the water.
In simple terms:
. During the day (peak load period) you use hydro to generate power to supplement the fossil fuelled base-load generating capacity.
. During the night (minimum load period) you use effectively surplus base-load generating capacity to pump the working fluid (literally) back up the hill to the point it started from.
You are using the potential energy of the stored water in the higher dam/pond as an energy "reservoir".
This allows the base load generating plant to operate at what is generally closer to best efficiency, and reduces the need to capitalise plant to meet peak demand.
Envisage a clipped sine wave.
Basil Jet wrote in news:4d5f5701$0$2517$ snipped-for-privacy@news.zen.co.uk:
howe long ago did cartoon character Dick Tracy have the wrist TV/communicator? today's cellphones do that and more.
snipped-for-privacy@downunder.com wrote in news: snipped-for-privacy@4ax.com:
consider the LOSSES and what they do to system efficiency.
Dick Tracey had the Moon Maid.
71-75% efficiency? Didn't someone here claim 90%?
Pump greenbacks. We already have that pump "primed", or so we're told.
Just guard the gold more heavily when it's at the top of the mountain.
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