This Lesson is about sensing and sensors - what they are, how they work, and how they are used in robotics.
Senses often seem to overlap.
In other words, two different senses can sometimes detect the same things. For example, to find out if you're near a wall, you can open your eyes and look, stick out your hand to feel, or even yell to hear whether your voice is reflected. The Problem of Human Sensing What you learn from your senses depends on what your brain does with the information it receives from your sense organs, such as your eyes, ears, and skin. For example, a big chunk of concrete may look heavy to you, but that's because you already know that concrete is heavy. Your brain is trained to know what information from each sense organ means, and how to react.