One of four original Swan and Raven models used by William froude on River Dart in 1867 measuring 12 foot in length. One of four original Swan and Raven models 1867
One of four original Swan and Raven models used by William Froude on River Dart in 1867 measuring 12 foot in length. One of four original Swan and Raven models 1867
Parts of William Froude's original Resistance Dynamometer (1871) used in his researches on surface tension and ship resistance consisting of 1) Lever and index arm 2) counterweights 3) pivot 4) wood framing, by William Froude c.1871 Parts of William Froude's original Resistance Dynamometer 1870