Robert Barker (physician)

Robert Barker (died 1745) was a British physician and inventor.

[5] Barker's Mill, a rotating device powered by water and Newton's Third Law, is sometimes described as a 17th-century invention.

It was published by John Theophilus Desaguliers in his book Experimental Philosophy of 1744.

[7][3] Desaguliers, who himself demonstrated the mill to the Royal Society, attributed the principle involved to Antoine Parent.

[8] French terms for the mill are tourniquet hydraulique, moulin de Parent or roue à réaction.