Inside the forbidden land – environmental photos of Russia from National Geographic

For an American, these photos are truly breathtaking. For most of our lives Russia has been an impenetrable vast region, indeed the largest country in the world, with millions of acres of natural wonders 다운로드.

My own heritage brings me back to Belarus (the first photo below). Enjoy these photos from National Geographic Russia and their Google+ page 다운로드.

I apologize for the captions since they are Google Translations from Russian (I’m also amazed that I can auto-translate a language in a browser with one click) 더미다 다운로드.

"Snow-white spring in the Belarusian forest." Photo by: Christine Lebedinskaya.

 

 

Continue reading Inside the forbidden land – environmental photos of Russia from National Geographic

Future of wind power? I vote for Dutch Windmills and small pinwheels

I recently encountered a state-of-the-art wind tower on the freeway. The base was separated into three parts and the turbine into another three. Carried by six trailers flagged with “wide load” and trailed by escort cars 다운로드. Yeah, it was big.

The current trend in wind power is to go bigger and bigger with more complex features. Including mag-lev, upper-atmosphere turbines, helicals, loopwings, skyscrapers, and highways (21 different types)  다운로드.

But, none are more interesting (to me) than the Dutch Windmill and the tiny pinwheels. I really hope our future is a landscape dotted with structural beauties and childhood toys, rather than industrial aluminum 지니 모션 t 1000 다운로드.

Doug Selsam’s Sky Serpent uses an array of small rotors to catch more wind for less money 미국 이력서 양식 다운로드. The key to increasing efficiency is to make sure each rotor catches its own fresh flow of wind and not just the wake from the one next to it, as previous multi-rotor turbines have done 다운로드.

That requires figuring out the optimal angle for the shaft in relation to the wind and the ideal spacing between the rotors. The payoff is machines that use one tenth the blade material of today’s mega-turbines yet produce the same wattage 맥용 kies. A wonderful and controversial design of which the inventor says:

“This is a 1,000 year-old design” of the single-bladed turbine, “I knew if I could get more rotors, I could get more power.”