Static pass through boxes are used to transfer materials between two clean rooms that are equally clean. Dynamic pass through boxes are used to transfer materials from uncontrolled environment to a controlled environment.
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The main difference between static and dynamic pass box is the airflow. In a static pass box, the airflow is restricted to prevent contaminants from entering the clean room. In a dynamic pass box, there is continuous airflow to help remove contaminants as items are transferred.
Dynamic pressure is the pressure exerted by a fluid in motion, caused by its velocity, while static pressure is the pressure exerted by a fluid at rest. Dynamic pressure increases with the square of the velocity, whereas static pressure remains constant regardless of velocity.
Static electricity is the buildup of an electric charge on the surface of a material, causing it to attract or repel other objects. Dynamic electricity, on the other hand, is the flow of electric charge through a conductor, such as in a circuit. Dynamic electricity is what powers most electrical devices and systems.
The main difference is the scale and intensity of the electrical discharge. A bolt of lightning is a large-scale and high-intensity natural phenomenon that occurs in the atmosphere, while the spark between hair and a comb is a small-scale and low-intensity static discharge caused by friction between materials in close contact.
The main difference between heat and temperature is that temperature measures the average kinetic energy of the particles in a substance, while heat is the transfer of energy between two substances due to a temperature difference. Temperature is a scalar quantity, while heat is a form of energy.
The main difference between mechanical and electromagnetic waves is how they travel. Mechanical waves require a medium, such as air or water, to propagate, while electromagnetic waves can travel through a vacuum.