Speedometer for boats
作者： Gary O Sandstedt
DOI:
关键词: Speedometer 、 Acoustics 、 Radiant energy 、 Electrical engineering 、 Response effect 、 Engineering 、 Movement (clockwork) 、 Water pressure
摘要: A boat speedometer embodies a radiant energy source and receiver means which is responsive to produces an output. speed indicator coupled the means. Another water pressure caused by movement of in changes response effect accordance with variations boat.
lens.org 参考文章(1)
Joseph P Heagney, Air-speed indicator ,(1938)