Saturday, April 20, 2013

The old and the new

Today I went on a field trip with students in our Environmental Studies department. We took them to see an old grist mill and a new wind turbine. We also got to see an old windmill that was used to pump water. It was part of a greater Earth Day / week festivities in our area. It was interesting to see various types of windmills that ground wheat for flour, pumped water for livestock, and generated electricity for a community college. The old grist mill had cloth sails, but they could not be put on because the winds were around 15-20 miles per hour and that was too strong. The winds had to be between 5-10 m.p.h. Who knew? The water pumping windmill would operate regardless of the wind speed. The modern wind turbine had to have winds over 3 m.p.h. but not more than 80.





2 comments:

OldLady Of The Hills said...

What a treat to see these three....Whenever I see an Old Fashioned Windmill like the ones in Holland, I think of the Hitchcock film, "FOREIGN CORESPONDENT" where a Windmill played a very very important plot point.....! And I think they are so very very pretty and graceful.

CyberKitten said...

I love the new wind turbines. If I could have one in my garden I *so* would!

And on and on and on

Still busy!  Surprised?  I think this is just the state of my life.  I'm teaching an on-line course, traveling three weeks in a row (MD,...