Fishfinders are beneficial instruments that anglers can use to monitor fish populations in certain bodies of water. They’re commonly found at the end of fishing rods but also on boats and other gadgets. Fishfinders identify the existence of fish swimming nearby using electronics and detection technologies, then display their location on an electronic screen. The transducer and the sonar are the two primary types of fish finders, each with numerous variations.
A transducer is a device that emits sound waves into the water and then receives its reflection at its original location. Sound waves return in different frequencies depending on what is in front of them: sand, vegetation, and fish return at different frequencies. These frequencies are transformed into an image on a screen when they reach the device.
Sonar is a device that works on the same principles as radar, except instead of using sound waves to identify objects, it employs electromagnetic waves. It functions in the same way as a transducer, but it puts out electromagnetic impulses and receives their reflections instead of sound waves.
…
