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A siphon is a tube running from one container to another that uses gravity to cause liquid to flow. The key is that the container with the liquid has to be at a higher level than the container you're moving the liquid to. You have to use force to start the initial flow, but after that gravity takes over.

Scientists know exactly how siphons work. A siphon is a clever tool that uses air pressure to move liquids downhill. To make it work, you fill the siphon with liquid first, and then gravity takes over. As the liquid moves down, it creates a suction force that keeps the flow going.

ˈsī-fən. 1. : a bent tube through which a liquid can be drawn by means of air pressure up and over the edge of one container and into another container at a lower level. 2. : any of various tube-shaped organs in animals and especially mollusks that are used to draw in or pass off fluids.

Electrostatics, as the name implies, is the study of stationary electric charges. A rod of plastic rubbed with fur or a rod of glass rubbed with silk will attract small pieces of paper and is said to be electrically charged.

The siphon– it is used to empty tanks which may not be easy to empty by pouring their contents out. The tubing must be lowered below the base of the tank. The liquid flows out due to pressure difference caused by the difference in height (h ρ g).

The SI unit of force is Newton (N). A Newton (1N) can be defined as the amount of force required to give a mass of one kilogram (1kg) an acceleration of 1m/s2. The instrument that is used to measure the amount of force that is exerted on an object is called spring balance.

A siphon is a tube that allows liquid to travel upward, above the surface of the origin reservoir, then downwards to a lower level without using a pump. When a certain amount of water moves over the bend in the siphon, gravity pulls it down on the longer leg lowers the atmospheric pressure in the bend of the siphon.