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TOPIC: Interesting Documentaries

Interesting Documentaries 15 Dec 2019 01:00 #100689

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Spitfire!

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Interesting Documentaries 14 Dec 2019 23:58 #100687

Up in the big woods, the "Seneca Pumped station" has been producing electricity since 1970..Huge opportunities still have not been put to use much. Geothermal is one..Hawaii tried it and after a while the lava tube it occupied was destroyed by an eruption. Here in PA our ridges are covered by extremely expensive and inefficient [ 15%] windmills..Solar is still stuck in the 70's at 15%..Batteries too,,,baby steps..Someday. en.wikipedia.org/wiki/Seneca_Pumped_Storage_Generating_Station

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Interesting Documentaries 14 Dec 2019 23:43 #100686

Do you guys remember James Burke and the BBC documentaries called connections ? It flowed..

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Interesting Documentaries 14 Dec 2019 17:42 #100685

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National Geographic 2019 - The Biggest Scientific Discoveries of 2019

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“I would rather have questions that can't be answered, than answers that can't be questioned.” - Richard P. Feynman

Interesting Documentaries 12 Nov 2017 23:28 #79586

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It IS a wonderful thing IMHO that "green energy" has evolved to a point where it's often less expensive than fossil fuels. I think the documentary gives a bit too much credit to China for that... But China does have a big motivation to stop using coal. I was in a hotel in Beijing 15-20 years ago, and on one of the days I was there, you could barely see the buildings across the street! The pollution on a bad day is like a thick fog.

A month ago I flew from Alabama to Oregon via San Francisco. At some point I looked out the airplane window and saw this:



I got out my GPS to figure out where we were, and eventually I figured out that what I had seen was the "Crescent Dunes" solar energy plant. Basically 1.2 square miles of mirrors focusing the sun onto a tower full of molten salt, halfway between and Reno and Las VegasYou can read about it here:

en.wikipedia.org/wiki/Crescent_Dunes_Solar_Energy_Project

Another cool "green" thing IMHO we have in the Tennessee River south of Arrowhead, is TVA's "Raccoon Mountain" pumped hydro storage reservoir on top of a mountain west of Chattanooga. Basically a huge water-based battery that TVA can charge fully in about 28 hrs, and discharge in 22 hrs from the electric grid. You can read about that here:

www.tva.gov/Energy/Our-Power-System/Hydr...ric/Raccoon-Mountain

and in more detail here:

en.wikipedia.org/wiki/Raccoon_Mountain_Pumped-Storage_Plant

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Last edit: by jmhyatt. Reason: Technical corrections

Interesting Documentaries 12 Nov 2017 14:38 #79567

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great stuff Dan, watched the first and third of your collection, one more to go..........the renewable energy one was quite interesting.........cheers
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Interesting Documentaries 12 Nov 2017 04:54 #79565

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The Breakthrough in Renewable Energy


topdocumentaryfilms.com/breakthrough-renewable-energy/
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“I would rather have questions that can't be answered, than answers that can't be questioned.” - Richard P. Feynman

Interesting Documentaries 01 Nov 2017 03:10 #79305

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Richard Feynman 'The pleasure of finding things out'.

topdocumentaryfilms.com/pleasure-finding-things-out/

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“I would rather have questions that can't be answered, than answers that can't be questioned.” - Richard P. Feynman
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Interesting Documentaries 01 Nov 2017 02:59 #79304

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“I would rather have questions that can't be answered, than answers that can't be questioned.” - Richard P. Feynman
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