<ul><li>Water droplets on car windows are found to build up an electrical charge, which is 10 times greater than previously thought.</li><li>The charge is generated when water droplets first contact a surface and it remains in the droplet as it moves across the surface.</li><li>Understanding the 'stick-slip' system of charge build-up could improve surface design and the safety of energy-holding systems.</li><li>The research team will conduct further testing on other liquids and surfaces to explore the implications of droplet charge build-up.</li></ul>

The water droplets on your car window are building electrical charge

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