Viable Collection

Listowel Monorail
The Lartigue monorail linking Listowel and Ballybunion is the worlds first commercially viable monorail, operating till 1924. It will be partly reconstructed in 2003

Goya Birdmen
MODO DE VOLAR One of Goyas many etchings depicting winged people, this is the most realistic, with wings large enough to be aerodynamically viable

Leduc 0. 21 01, mounted on a S. E. 161
Leduc 0.21 01, mounted on its SNCASE SE.161 Languedoc mother-ship, parked next door to the second 0.21, also mounted on a Languedoc mother-ship

Space Communication
Artificially-induced auroras offer a viable means of communicating with other worlds : by modifying their pulses, messages can be effectively transmitted

Newcomens Engine
Newcomen constructs the first viable steam engine

FULTONs CLERMONT
Robert Fultons Clermont, which steamed from New York to Albany and back, August 17-22 1807; the first economically viable steamboat

Oehmichen Helicopter
Throughout the world, inventors seek to build a viable helicopter : here French engineer Oehmichen flies his graceful project at Valentignay, Doubs

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