## What does hydrostatic balance explain?

: a balance for weighing a substance in water to ascertain its specific gravity.

## What is hydrostatic balance in atmosphere?

behaviour of wind systems In climate: Characteristics. The atmosphere is mainly in hydrostatic balance, or equilibrium, between the upward-directed pressure gradient force and the downward-directed force of gravity.

What is the hydrostatic balance equation?

∂z = −gρ. This is the hydrostatic equation. The negative sign ensures that the pressure decreases with increasing height. That is, the pressure at height z is equal to the weight of the air in the vertical column of unit cross-sectional area lying above that level.

What is the hydrostatic approximation?

An approximation in geophysical fluid dynamics that is based on the assumption that the horizontal scale is large compared to the vertical scale, such that the vertical pressure gradient may be given as the product of density times the gravitational acceleration. …

### What happens if the Sun is not in hydrostatic equilibrium?

Apart from some very tiny changes, the Sun is neither expanding nor contracting (it is in hydrostatic equilibrium) and puts out energy at a constant rate. Fusion of hydrogen occurs in the center of the Sun, and the energy generated is carried to the surface by radiation and then convection.

### How is hydrostatic balance used?

The hydrostatic balance is used to determine the specific gravity of a gemstone. Although it is a fairly simple apparatus to operate, it can be time-consuming. One must put the results into a calculation, something not all gemologists enjoy doing.

Who invented hydrostatic balance?

Al-Khazini
Hydrostatic equilibrium/Inventors

Why is the hydrostatic balance important?

A hydrostatic balance is a particular balance for weighing substances in water. Hydrostatic balance allows the discovery of their specific gravities. This equilibrium is strictly applicable when an ideal fluid is in steady horizontal laminar flow, and when any fluid is at rest or in vertical motion at constant speed.

## What does it mean when the Sun is in hydrostatic equilibrium?

Hydrostatic equilibrium is the state where the force of gravity pulling inward is balanced by pressure pushing outward. In the core of the Sun, hydrogen is being fused into helium via nuclear fusion. Gravity, on the other hand, is working to contract the Sun towards its center.

## What must be balanced for the Sun to remain in hydrostatic equilibrium?

The structure of the Sun is a matter of balance between the pressure outward and the force of gravity inward: this balance is known as hydrostatic equilibrium. To remain in balance, the Sun must produce just enough energy in its interior to replace the energy radiated away from its surface.

Is the Sun in hydrostatic equilibrium?

The Sun’s interior is in hydrostatic equilibrium. Energy is carried away from the Sun’s core by radiative diffusion and convection. The Sun’s interior can be probed by helioseismology.

### How to know if the atmosphere is in hydrostatic balance?

If the net upward pressure force on the slab is equal to the downward force of gravity on the slab, the atmosphere is said to be in hydrostatic balance. Balance of vertical forces in an atmosphere in hydrostatic balance. 2 The mass of air between heights z and z +δz in the column of air is ρδz.

### What are the forces that balance hydrostatic balance?

Horizontal motion above the boundary layer: Acceleration = horizontal PGF + Coriolis force Horizontal motion within the boundary layer: Acceleration = horizontal PGF + Coriolis force + frictional force Force Balances Hydrostatic Balance

Which is the correct description of hydrostatic equilibrium?

In fluid mechanics, hydrostatic equilibrium or hydrostatic balance (also known as hydrostasy) is the condition of a fluid or plastic solid at rest. This occurs when external forces such as gravity are balanced by a pressure-gradient force.

What is the balance of forces in the vertical?

For an atmosphere in hydrostatic equilibrium, the balance of forces in the vertical requires that −δp = gρδz In the limit as δz → 0, ∂p ∂z = −gρ. This is the hydrostatic equation. 4 For an atmosphere in hydrostatic equilibrium, the balance of forces in the vertical requires that −δp = gρδz In the limit as δz → 0, ∂p ∂z = −gρ.