Calculation of the outflow speed of a liquid through an orifice (Torricelli's law theorem)

Discharge of liquids (Torricelli’s law)

Torricelli's law (Torricelli's theorem) states that the discharge velocity of a liquid equals a free fall of the liquid from the liquid surface to the opening of the tank.
Influence of vessel shape on hydrostatic pressure

Pressure in liquids (hydrostatic pressure)

This article provides answers to the following questions, among others: What causes the hydrostatic pressure in liquids?On which variables does the hydrostatic pressure depend?What is the...
Container ship

How do boats float: Buoyancy in liquids

Buoyancy is the force directed against gravity that an object experiences when submerged in a fluid (liquid or gas). More information on how buoyancy is formed can be found...
Stratification of the earth's atmosphere

Barometric formula for an isothermal atmosphere

The barometric formula describes the decrease of air pressure with increasing altitude. Without the influence of the temperature changes, the air pressure decreases by about 1.2% per 100 meters...
Dry adiabatic and wet adiabatic lapse rate (temperature gradient)

Barometric formula for an adiabatic atmosphere

The barometric formula for an adiabatic atmosphere takes into account the decrease in temperature with increasing altitude and the associated effects on air pressure. More information about this and...
Pressure on a flat surface

Pressure in gases

This article provides answers to the following questions, among others: What causes the pressure in gases?How is the unit bar converted into the unit Pascal?What is...
Demonstration of the siphon-spillway-principle

Siphon

This article provides answers to the following questions, among others: How does a siphon work?What is the maximum height to the apex of the flexible tube...
Pressing a drawing pin together between two fingers

Pressure

This article provides answers to the following questions, among others: What is pressure?In what way does the contact pressure differ from a gas pressure or liquid...