Search found 5 results

by Geepy
11/03/11, 18:59
Forum : Company and Philosophy
Subject : End of the world (for 2012), astronomy and assumptions
answers: 401
views: 123456

Yes, but as you will only know in 300 years, you will have no deadline!
by Geepy
27/10/10, 21:18
Forum : Solar thermal: solar collectors CESI, heating, hot water, stoves and solar cookers
Subject : USA: 1 gigawatt thermal solar complex :-)
answers: 3
views: 2999

Small precision for the title of the subject: 1000 megawatts = 1 gigawatt or 0,001 Terawatt
by Geepy
21/06/10, 20:44
Forum : Garden: landscaping, plants, garden, ponds and pools
Subject : Nature also makes mistakes and makes "GMOs"?
answers: 33
views: 34627

I have the same oddity in my garden on a red hazel tree: green shoots have come out of the ground (or has it sprouted from another hazel tree?) But there are also green leaves on some parts and they are next to red leaves ... https: //www.econologie.com/fichiers/partager2/12 ...
by Geepy
07/04/10, 14:16
Forum : special motors, patents, fuel consumption reduction
Subject : Little physics question: potential energy / free fall
answers: 17
views: 8998

1st case: T = Mgh (differences of potential energies) 2nd case: E = 1/2 MV² / 2 with V = (2gh) ^ 1/2 (which you demonstrate by starting from the basic equation "sum of the forces = M x acceleration of the solid ", which here is equal to g, only gravity is involved) By replacing V, you thus obtain E = ...
by Geepy
25/04/09, 09:34
Forum : Heating, insulation, ventilation, VMC, cooling ...
Subject : How to calculate a copper heating resistor ?!
answers: 15
views: 17955

For the calculation of a resistance, see here for example:
http://pagesperso-orange.fr/f5zv/RADIO/ ... 23B01.html

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