The property unique to electromagnetic waves is that they can travel through a vacuum.
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One unique property of electromagnetic waves is that they can travel through a vacuum (empty space) without the need for a medium, such as air or water.
The property that is unique to electromagnetic waves is that they can travel through a vacuum. Unlike sound waves, which require a medium such as air, water, or solid material to propagate, electromagnetic waves can travel through empty space. This is because electromagnetic waves are comprised of mutually perpendicular oscillating electric and magnetic fields, which can propagate through a vacuum without the need for a physical medium. This ability of electromagnetic waves to travel through a vacuum is significant, as it allows them to travel across vast distances in outer space, enabling us to observe and study objects in the universe without any medium in between.
