fajsúlyára

Fajsúlyára is a Hungarian term that translates to "specific gravity" or "relative density" in English. It refers to the ratio of the density of a substance to the density of a reference substance, typically water at a specific temperature. This dimensionless quantity allows for easy comparison of densities between different materials. For example, if a substance has a fajsúlyára of 2, it means it is twice as dense as water.

The concept is widely used in various scientific and engineering fields, including physics, chemistry, and materials science. It is particularly useful for determining whether an object will float or sink in a liquid. If a substance's fajsúlyára is less than 1, it will float in water. If it is greater than 1, it will sink. This principle is fundamental to understanding buoyancy.

Fajsúlyára can be calculated by dividing the mass of a substance by the mass of an equal volume of the reference substance. Alternatively, it can be found by dividing the density of the substance by the density of the reference substance. The choice of reference substance and temperature is important for accurate comparisons, though water at 4 degrees Celsius is a common standard due to its maximum density at that temperature.