नासा और यूएसजीएस ने नदी के प्रवाह को मापने का नया तरीका खोजा

नासा और यूएसजीएस ने नदी के प्रवाह को मापने का नया तरीका खोजा: A team of scientists and engineers at NASA and the U.S. Geological Survey (USGS) collaborated to see if a small piloted drone, equipped with a specialized payload, could help create detailed maps of how fast water is flowing. Rivers supply fresh water to our communities and farms, provide homes for a variety of creatures, transport