The Physics of Vacuum

A vacuum is a space where nearly all matter, like air and gas, has been removed, resulting in very low pressure. In physics, this isn’t an absolute void—tiny particles and electromagnetic fields can still exist. Vacuums are useful in experiments and technology because they minimize interference from air, allowing precise measurements or the operation of sensitive tools like telescopes and electron microscopes. Understanding vacuums helps us explore space, develop advanced electronics, and understand fundamental forces, highlighting their importance beyond simply "empty" space.