Physics

Nuclear Astrophysics Definition Nuclear Astrophysics is a field at the intersection of nuclear physics and astrophysics that seeks to understand how nuclear processes shape the…

Particle Physics Definition Particle Physics is a search for the most primitive, primordial, unchanging and indestructible forms of matter and the rules by which they…

Big Bang Theory Definition The Big Bang Theory is the leading explanation about how the universe began. A scientific theory describing the origin of all…

Nitrogen Definition Nitrogen is vital for all living things. Animals and plants both need nitrogen to make proteins. Proteins make up everything we need to…

Neutrino Definition Neutrino is a subatomic particle that is very similar to an electron, but has no electrical charge and a very small mass, which…

Application and Functions of Sodium Introduction Sodium is an essential element for all animals and some plants. It’s Atomic number 11; atomic weight 22.99; melting…

Classes and Uses of Minerals Introduction Minerals are naturally-occurring inorganic substances with a definite and predictable chemical composition and physical properties. A mineral is an…

Minerals Definition Minerals are defined as solid, inorganic, naturally occurring substances with a definite chemical formula and general structure. Almost all chemical elements in the…

Thermal Equilibrium Definition Thermal Equilibrium is when two objects are at the same temperature. Two objects at different temperatures will reach thermal equilibrium because heat…

Radium Definition Radium is the chemical element of atomic number 88 and the element symbol is Ra, a rare radioactive metal of the alkaline earth…

About Fluorescence Definition Fluorescence is a form of luminescence, which is the emission of light not attributed to thermal radiation, that occurs over very short…

About Phosphorescence Definition Phosphorescence is light emitted after exposure to radiation, or produced by something that doesn’t produce flame or heat. Unlike fluorescence, in which…