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View Diary: Green diary rescue: Solar panels on White House at last, wind farms rising, deniers no smarter (66 comments)

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  •  It's not the speed of the blades. It's the size. (0+ / 0-)

    Standing as close to a wind turbine as is legal is really the only way to fully understand these things, I believe.

    They are a LOT taller and bigger than they look in photos. The ones here are about 200 feet high, and each blade is about 75 feet long.

    The blades don't rotate very fast even in the highest winds, but are so big they emit a very low pitched rumble, almost down to sub-bass territory.

    Right many are called, and damn few are chosen.

    by Idaho07 on Sun Aug 18, 2013 at 02:59:52 PM PDT

    [ Parent ]

    •  infra-sound, (0+ / 0-)

      we have a lot of these turbines out there, i suspect some people very sensitive to infra sound and others don't notice it at all.

      20% of people react badly to infra-sound,  i suspect
      we will need to model this and determine what the
      tolerance levels are for people

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