12-17-2021, 02:20 PM
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#551 (permalink)
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Master EcoModder
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S0 appended a clip on the Galactic Wave.
Similar to the Solar wind in speed but on a vastly larger scale. The flow is normal to the Galactic arms. 10% difference in density from the peaks to the valleys. 'Tens of light years' wide, they start out short and fast but as they spread they slow and get taller -- 200 to 525 light years tall.
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Today
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Other popular topics in this forum...
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12-19-2021, 04:32 PM
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#552 (permalink)
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Master EcoModder
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Slashdot today had some interesting items:
Imagining an All-Renewable Grid With No Blackouts Without Long-Duration Batteries (stanford.edu)
Quote:
A significant finding of the study was that long-duration batteries were neither needed nor helpful for keeping the grid stable. Instead, grid stability could be obtained by linking together currently available batteries with storage durations of four hours or less. Linking together short-duration batteries can provide long-term storage when they are used in succession. They can also be discharged simultaneously to meet heavy peaks in demand for short periods. In other words, short-duration batteries can be used for both big peaks in demand for short periods and lower peaks for a long period or anything in-between.
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Can Invasive Fish Be Scared Off With a Menacing Robot Predator? (nytimes.com)
Quote:
The robot not only freaked the mosquitofish out, but scarred them with such lasting anxiety that their reproduction rates dropped; evidence that could have long term implications for the species' viability, according to the paper. "You don't need to kill them," Dr. Polverino said. Instead, he said, "we can basically inject fear.*
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Scientists Discover Seaweed Species That Stops Cows from Emitting Methane (cbsnews.com)
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The increase motivated chief scientist at Futurefeed, Rob Kinley, who worked with Dorgan on his organic certification 15 years ago, to find a seaweed species with even more methane-reducing power. "We started testing seaweeds from coastal Australia, and it wasn't long before the Asparagopsis species showed up, and it showed up in a big way. So big that we didn't even believe what we were seeing," Kinley said. "It took multiple runs of testing this before we believed what we were seeing, which was we couldn't find methane anymore." Kinley's research showed Asparagopsis, a common type of red seaweed, has the potential to virtually eliminate methane emissions from livestock.
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Melting Glaciers May Create New Pacific Salmon Habitat, Study Finds (upi.com)
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As glaciers in the mountains of western North America melt, or retreat, they could produce around 4,000 miles of new Pacific salmon habitat by the year 2100, the data showed. After modeling glacier retreat under different climate change scenarios, the glaciers could reveal potential new Pacific salmon habitat nearly equal to the length of the Mississippi River under moderate temperature increases, the researchers said.
"We predict that most of the emerging salmon habitat will occur in Alaska and the transboundary region, at the British Columbia-Alaska border, where large coastal glaciers still exist," co-author Kara Pitman said in a press release....
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Why yes, I am using The Lounge for an online scratch pad.
*Bet they learnt that from Facebook.
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12-19-2021, 04:47 PM
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#553 (permalink)
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Human Environmentalist
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Your optimism will not be tolerated. The Sky Is Falling, says the Boy Who Cried Wolf.
To temper the optimism, all of the batteries in the world can sustain the grid for seconds, not hours.
As I pointed out, my peak solar production is 5x higher in late spring as dead of winter. That's a tough problem to solve.
My thought is that grid connected EVs will partially solve the problem. An EV represents several days worth of household usage, which is quite the buffer.
Better to come up with ways to utilize what otherwise sits idle 95% of the time.
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12-19-2021, 07:00 PM
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#554 (permalink)
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Master EcoModder
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Quote:
To temper the optimism, all of the batteries in the world can sustain the grid for seconds, not hours.
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Software defined power does something (I think of it as advancing and retarding the three phases against each other [maybe]) that responds in micro-seconds.
Quote:
Your optimism will not be tolerated.
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Your tolerance shall be optimized.
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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12-19-2021, 07:46 PM
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#555 (permalink)
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Corporate imperialist
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Yeah my panels are down from 7.4kw summer peak to about 5kw winter peak. In summer I get about 70 kwh per day to about 30 kwh as of yesterday which was a good production day with no clouds.
And my leaf uses about 30% more power and I usually drive 10 to 20% less in winter.
Yeah so EVs and solar panels dont match up very well.
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2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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12-20-2021, 01:22 PM
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#556 (permalink)
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Master EcoModder
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observation
Quote:
Originally Posted by oil pan 4
Observation is complete opposite of what you assume.
As the poles have moved over the last 160 years it's gotten weaker, its moved more in the last 20 years than the previous 120 years and also weakened more in the last 20 years than the past 120.
So what makes you think as the poles move the magnetic field won't lose strength?
The gps satellites are up about 12,000 miles, they could quite easily be outside of the earth's protective field while the atmosphere is still quite well protected.
Can you assume that things 12,000 miles up will be protected?
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* Earth is a 'bar magnet'.
* Rotating a bar magnet, while changing the orientation of its magnetic lines of flux ( relative to the location of the observer ), does nothing to the 'magnitude' of its lines of magnetic flux.
* The Earth dynamo has just changed orientation. It will still pick up as many iron filings ( if it could pick up iron filings ).
* The magnetosphere is still there.
* The solar wind blows it into a perfect streamline body of revolution just as before any excursion or reversal.
* Satellites don't notice a thing. You know from 'Flying Wild Alaska,' that even in solar storms, GPS and radio are only momentarily affected, and return to service, thanks to their electronics having bathed within Trinitite caverns below the Nellis Test Range.
* The Interplanetary Magnetic Field ( which no one has mentioned ), remains, actively shielding Earth from cosmic radiation.
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12-20-2021, 03:52 PM
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#557 (permalink)
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redpoint5 can size his useage for the minimum, but cannot cheaply store the peak generated during the summer months in a small area. What is the penalty for shading unnecessary panels in the summer, assuming you don't resell the excess.
Bar magnet? I see a ball magnet, but understand most of the comparison and my magnet shape understanding of theory is lacking, notably about how the poles work on a sphere and resulting lines of force
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12-20-2021, 05:20 PM
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#558 (permalink)
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Corporate imperialist
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Your assumptions don't match observation.
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1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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12-20-2021, 05:27 PM
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#559 (permalink)
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Master EcoModder
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your
https://en.wikipedia.org/wiki/Earth%27s_magnetic_field
Quote:
Originally Posted by oil pan 4
Your assumptions don't match observation.
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Your comment offers no actionable information.
A bar magnets field lines are remarkably similar to those of Earth.
Magnets and Electromagnets
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Last edited by aerohead; 12-20-2021 at 05:46 PM..
Reason: add link
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12-20-2021, 06:47 PM
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#560 (permalink)
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Master EcoModder
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Quote:
The Interplanetary Magnetic Field ( which no one has mentioned ), remains, actively shielding Earth from cosmic radiation.
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Not everyone just discovered this, as you apparently have.
Here's one of today's Featured Links:
Evidence from Galactic Cosmic Rays That the Sun Has Likely Entered A Secular Minimum in Solar Activity
F. Rahmanifard,A. P. Jordan,W. C. de Wet,N. A. Schwadron,J. K. Wilson,M. J. Owens,H. E. Spence,P. Riley
First published: 16 December 2021 https://doi.org/10.1029/2021SW002796This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as doi: 10.1029/2021SW002796
Quote:
Abstract
Since the beginning of the space age, the Sun has been in a multi-cycle period of elevated activity (secular maximum). This secular maximum is the longest in the last 9300 years. Since the end of solar cycle 21 (SC21), however, the Sun has shown a decline in overall activity, which has remarkably increased the fluxes of galactic cosmic rays (GCRs). Here, we investigate the correlation between the modulation of GCRs, the heliospheric magnetic field, and solar wind speed for the last 24 solar cycles to find trends that can potentially be used to predict future solar activity. Specifically, we develop a tool for predicting future magnetic field intensity, based on the hysteresis in the GCR variation, during the last phases of the current cycle. This method estimates that SC25 will be as weak as or weaker than SC24. This would mean that the Sun has likely entered a secular minimum, which, according to historical records, should last for another two cycles (SC25 and SC26).
Plain Language Summary
We investigated the correlation between the modulation of galactic cosmic rays (GCRs) and solar wind parameters to find trends that could be used in predicting future solar activity. Using this method, we estimate that SC25 will be as weak as or weaker than SC24. Furthermore, these trends suggest that the Sun might be in a secular minimum.
This article is protected by copyright. All rights reserved.
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Ball? Bar? Why did Plato say it was a dodecahedron? Via DDG:
Quote:
"The Dodecahedron, or the Shape of the Earth According to Plato
https://link.springer.com › chapter › 10.1007 › 978-1-4419-8116-5_17
Abstract. The discovery of the spherical shape of the earth is the finishing touch of the new world picture that was introduced by Anaximander. Strictly speaking, it is not right to use the word "discovery," since the idea of a spherical earth, as we will see in this and the next chapter, was the product of metaphysical speculations, rather than a discovery based on verifiable observations."
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Last edited by freebeard; 12-20-2021 at 06:53 PM..
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