CONQUEST OF TIME AND SPACE 



three yards by eighteen while the aeroplane was mov- 

 ing at a rate of fifty miles an hour. The bullets used 

 are the regulation 30-caliber used by the army. 



It remains to be seen what practical uses may be 

 found for the aeroplane in solving transportation 

 problems of the future. Such a flight as that made 

 in August, 1913, by Mr. Harry G. Hawker in his hy- 

 droaeroplane flight around the British coast, in which 

 he covered 1043 miles in about as many minutes' 

 flying time, carrying a passenger and making 494 

 miles in his best day's journey, suggests practical uses 

 for the aeroplane, and particularly for the hydroaero- 

 plane, that as yet are almost untested. 



THE WIRELESS TELEGRAPH 



In rounding out this brief survey of the triumphs of 

 science in overcoming the barriers of time and space, 

 there remains for notice perhaps the most mystifying 

 achievement of all, the invention of the wireless tele- 

 graph. This might be called a conquest not merely 

 of the air, but of the ether. And it has the double 

 merit of being a scientific achievement which has obvi- 

 ous elements of the utmost practicality. 



As evidence of the interest that attaches to the 

 achievement as a fundamental investigation in sci- 

 ence, it may be noted that the Nobel prize in physics 

 was given in 1900 to Signor G. Marconi and Professor 

 Ferdinand Braun in recognition of their contributions 

 to the perfection of the wireless telegraph. As evi- 

 dence of the practical character of the achievement, it 

 suffices to recall that every large ocean liner is now 

 equipped with its wireless apparatus, and that the 



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