Conductivity is the property of a material to allow the flow of heat or electricity through it. Thermal conductivity measures heat transfer, while electrical conductivity measures electric current flow. Good conductors like metals have high conductivity, enabling efficient transfer, while ...
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Pressure is the force exerted per unit area on a surface. It is a scalar quantity measured in pascals in the SI system. Pressure can arise from liquids gases or solids and plays a key role in various phenomena like ...
A substance is any material with distinct physical and chemical properties that occupies space and has mass. It can exist in solid liquid or gaseous states and may be pure like elements and compounds or a mixture. Substances play a ...
A principle is a fundamental truth or law that serves as the foundation for a system of belief or behavior. In science, it refers to a basic rule that explains how natural phenomena occur. Principles guide understanding and application in ...
SI unit is the International System of Units used for consistent measurement worldwide. It includes base units like meter for length kilogram for mass second for time and ampere for electric current. Derived units like Newton for force and joule ...