Nerve impulses are the body’s lightning-fast communication signals—electrochemical messages that allow the brain, spinal cord, and nerves to coordinate every thought, movement, and reaction. Whether you’re touching something hot, taking a step, or solving a puzzle, these impulses make it all possible.
Below, we break down how nerve impulses work and how messages move through...
Light is one of the most fascinating forces in our universe. It is a form of electromagnetic radiation that allows us to see the world around us, and even the distant stars beyond our planet. Unlike sound, light does not need air or any material medium to travel. It moves freely through empty space, making it possible for sunlight to reach Earth across millions of kilometres of vacuum.
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