This popularity was driven by the simplicity of windmills as mechanical energy generators. By simply putting a windmill with many vanes up, you could quickly garner access to a free mechanical energy source. Through the spinning of the blades, that rotational energy could be used to drive machines through gearing or used to push and pull water from the ground with simple water sucker-rod pumps.
PTELook at the text below. In 35 seconds, you must read this text aloud as naturally and clearly as possible. You have 35 seconds to read aloud.
Recorded Answer
Current status:
Beginning in 35 seconds.