Science basics

• Physical constants

  A physical constant is a physical quantity that is generally believed to be universal in nature and have constant value in time.

• Mathematical constants

  A mathematical constant is a number whose value is fixed by an unambiguous definition,.

• Elements

  Elements of the periodic table with their atomic number, electron configuration, and recurring chemical properties.

Periodic table Scandium Transition metal Halogen group Rare-earth Metal incl. Lanthanoid series Actinoid series Transuranium series