[D7835G], Letter from John Harper Long to Thomas Alva Edison, July 11th, 1878

Read about heat measurer TAE made for Prof. Langley and wants info -- wants to conduct experiments on conductivity of heat in fluids and needs a finer thermometer than any which physicists presently possess -- has consulted several gentlemen at U. of Tubingen in Wirttenberg, including Profs. Lothar Meyer and DuBois Raymond and they wonder if TAE's inst would work -- this fellow is an American, has met Langley, and would like to introduce TAE's inst among German chemists TAE marg: You can do all you require the delicacy is inf & depends on manip I have sent one to Browning who will make them of any design require to give idea for instance [then goes on to describe expt but difficult to read on film]

Long, John Harper

Edison, Thomas Alva

1878-07-11

1870-1879

Letter

Tasimeter

Heat and thermodynamics

D7835G

D7835-F

19:423

Thomas Edison National Historical Park

Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University