That little jolt we sometimes feel when touching a doorknob or someone can be surprising. Yet, this very common phenomenon is simply explained by a scientific mechanism linked to static electricity. Have you ever had that strange sensation when shaking someone’s hand or touching a doorknob: a tiny spark, almost imperceptible, but enough to make you jump? This phenomenon, as surprising as it is commonplace, happens to everyone. Yet, behind this minuscule “zap” lies a fascinating mechanism that combines physics, environment, and everyday habits. And science has a much simpler explanation than we might imagine.
Why do we feel a small electric shock?
It all starts with a very common phenomenon: static electricity . Our body can accumulate tiny electrical charges without us realizing it.
How does this happen? Simply by moving. Walking on the floor, sitting on a sofa, taking off a sweater or even turning over in bed causes small exchanges of electrons between surfaces and our body.
