Method of measuring volume and density of solid object

Abstract

The invention relates to a method for measuring the density of an object. The method comprises the following steps of preparing fine particles with uniform texture and a container with known mass (m)and volume (V1) in advance; firstly, filling the container with fine particles; weighing to obtain the total mass m1; obtaining the density rho particulate matters of the fine particulate matters according to the formula rho particulate matters = (m1-m) / v1, weighing and recording the mass m of the measured object; transferring part of fine particles out of the container for storage; reserving a small amount of fine particles at the bottom of the container; putting a solid substance to be measured into the container; and filling the container with the fine particles transferred from the container, weighing and recording the mass m2 of the remaining fine particles taken out from the container, calculating the volume of the remaining fine particles according to the equation v measured object=m2 / rho particulate matters to obtain v measured object, and calculating the density of the measured object according to the v measured object. According to the invention, the volume and density measurement problem of the solid object with a complex shape is solved, and the measurement precision is relatively higher.

Description

technical field [0001] The invention relates to a method for measuring object density. It should be noted that the present invention is not suitable for measuring the density of hollow objects. Background technique [0002] In daily life, we usually measure the volume of solid matter to calculate the density, which can be used to evaluate the quality and purity of the substance or to judge the authenticity of the object, such as the specific gravity of wheat and corn, granular plastic, granular fertilizer true and false etc. [0003] The density of a substance expresses the mass of the substance per unit volume. Therefore, to determine the density of a substance, it is usually necessary to measure the mass and volume of the substance. The mass of a substance is relatively easy to determine and can be obtained by weighing with a balance. However, the measurement of the volume of an object is relatively complicated. For a regular object, the volume of the object can be cal...

AI Technical Summary

Problems solved by technology

However, it is very difficult to measure the volume of granular solid substances that are easy to absorb water, cannot be immersed in water or liquid, or have irregular surfaces and small volumes, such as soil clods, cork, sponges, granular fertilizers, etc.