Vaakumrõhk

Vaakumrõhk refers to the pressure difference between a region of space and the surrounding atmosphere. It is commonly observed in scientific experiments and industrial applications where a partial vacuum is created. A vacuum is a space devoid of matter, but in practice, a perfect vacuum is impossible to achieve. Instead, a partial vacuum is a region where the pressure is significantly lower than atmospheric pressure.

The concept of vacuum pressure is utilized in various technologies. For instance, in vacuum cleaners, a motor creates a partial vacuum, causing air to rush in and carry dust and debris with it. In scientific laboratories, vacuum chambers are used to conduct experiments under controlled low-pressure conditions, which can affect chemical reactions, material properties, and biological processes.

The measurement of vacuum pressure is typically done using specialized instruments called vacuum gauges. These gauges can measure pressure in units such as Pascals (Pa), Torr, or millimeters of mercury (mmHg). The higher the vacuum, the lower the pressure reading. Understanding vacuum pressure is crucial for designing and operating equipment that relies on reduced atmospheric conditions, ensuring optimal performance and safety.