Kaaltihedus

Kaaltihedus is a term used in Estonian to describe density, specifically mass per unit volume. It is a fundamental physical property of matter, indicating how much "stuff" is packed into a given space. The standard unit for kaaltihedus in the International System of Units (SI) is kilograms per cubic meter (kg/m³). In everyday contexts, grams per cubic centimeter (g/cm³) or grams per milliliter (g/mL) are also commonly used, especially for liquids and solids.

Kaaltihedus is determined by both the mass of the substance and its volume. Substances with higher kaaltihedus are considered denser, meaning they have more mass in the same amount of space compared to substances with lower kaaltihedus. For example, lead has a higher kaaltihedus than water, which is why a piece of lead sinks in water. Temperature and pressure can also influence kaaltihedus, particularly for gases, as changes in these conditions can affect the volume occupied by a given mass of substance. Understanding kaaltihedus is crucial in various scientific and engineering fields, including material science, fluid mechanics, and astrophysics. It helps in identifying materials, calculating buoyancy, and understanding the behavior of matter under different conditions.