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A Catalogue of Roman Silver Coins, in the Library of Trinity by John Adam Malet

By John Adam Malet

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The absence of wheels also removes the speed limitations intrinsic in ordinary trains. The high speeds of TACVs will necessitate that they be isolated from other vehicles and pedestrians. This goal can be achieved by placing thi? H1011OI`3ll 011 Ei UGSLIB fl {GW m€tI'€S above UIQ A Winged Train on an Air Cushion 55 ground. A trestled track is worth consideration not only on safety grounds but from the viewpoint of economy as well, especially if the track is to be routed through impassable areas.

First we find a solution to this problem, then the idea is realized as a lifting mechanism to perform the task. But to convert this mechanism into a vehicle, it must meet a number of additional constraints. It must be safe and reliable in operation, possess sufficient capacity for the task, and be economically feasible. The conversion of a mechanism, designed to lift goods, into a vehicle is preceded by improvement, engineering development, and modernization. If after the respective modernization the vehicle can perform both the given task and a whole class of similar jobs, then various modifications are developed so forming a new mode of transportation.

Thus, technological achievements and the ingenuity of an inventor make it possible to combine in one vehicle the properties of different modes of transportation, such as the off-road vehicle of high cross-country capability and the electric commuter train of high seating capacity. Cushion but of What Type? To be surprised needs but a minute, to make something surprising needs years. c. A. nnnvnrrus When the Wheel Fails to Do the Job Is it possible to predict the appearance of a qualitatively new method of transportation?

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