Ocupation: Astronomer
Life: March 12, 1835 - July 11, 1909
Birthday: March 12
Death: July 11
The demonstration that no possible combination of known substances, known forms of machinery and known forms of force, can be united in a practical machine by which men shall fly along distances through the air, seems to the writer as complete as it is possible for the demonstration to be.
topic: Distance, Future, Airplane, Flying Machines