Question

समुद्र की गहराई कैसे ज्ञात की जाती है।how to find the depth of ocean.

Answer 1

The weight is pulled back up and the distance from the surface mark to the weight is measured. This length equals the depth of the ocean at that point. This method of seafloor mapping is very time consuming, especially when charting deep water. The invention of sonar changed the way that the seafloor is mapped

Depth finder. Depth finder, also called echo sounder, device used on ships to determine the depth of water by measuring the time it takes a sound (sonic pulse) produced just below the water surface to return, or echo, from the bottom of the body of water.