A "ridiculously simple" device keeps airplanes aloft.
Airplanes are largely the toys or transporters of the middle and upper classes. But one man's childhood of poverty paved the way for a clever gadget that helps pilots keep their planes in the air.
Born in New York in 1918, Leonard M. Greene was the youngest in a family of five caught in the post-World War I depression. Living on $20 a month, the family had no money for toys, so a 5-year-old Greene began to invent his own playthings. He rejuvenated spent batteries in salt water, built a lighted wagon, salvaged a sewing-machine motor-all with a "trash-can set" of a children's encyclopedia for reference and inspiration.
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Manufacturing in the United States is in trouble. That's bad news not just for the country's economy but for the future of innovation.
This document is part of the “How-To Guide for Most Common Measurements” centralized resource portal. This tutorial provides a detailed guide for measurement and device considerations to take temperature measurements using thermocouples. Get an introduction to thermocouples, which are inexpensive sensing devices widely used with PC-based data acquisition systems. Also review some specific thermocouple examples and learn how thermocouples work and ways to integrate them into a data acquisition measurement system.
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