Definition: A device or organ that detects certain external stimuli and responds in a distinctive manner.

Alright class, settle down now, let’s take a look, At this word ‘sensors,’ a concept we must cook! The dictionary gives us a clue, it's true, “A device or organ that detects, for me and you!” Let’s break it down, nice and slow, Think about things that sense the flow. "Detects certain external stimuli..." – That's the key! It means they notice what’s out there, you see? Like light, or sound, or temperature too, Things happening around, for me and for you! "...and responds in a distinctive manner." – Now this is neat, They don’t just sit still, oh no, not complete! They react somehow, in their own special way, Like flashing lights when you brighten the day. Think of your eyes, they sense the light so bright, And send that signal to your brain with all its might! Or a thermometer, feeling warm or cold, Telling you if your story must be told – "It’s chilly outside!" or “A lovely summer day!” Sensors are everywhere, don't you see? From smartphones and cars, for you and me! So, in short class, a sensor does this: it feels And then tells us what the world reveals. Do you have any questions about this clever word?