Books or online PDF files?

The advancement of the web has prompted the adding of a lot of ideas beginning with “e-” to our lives. […]

Chemical Reactions in Atmosphere

Introduction The atmospheric chemistry is a branch of atmospheric science that studies the chemistry of the Earth’s atmosphere and the […]

Band Theory of Conductors

Band theory is derived from the theory of molecular orbitals and is based on quantum mechanics. When several atoms are […]

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