Published onNovember 5, 2014What Is a Triangular Number?number-theorymathematicsA number formed by arranging dots in a triangle shape.
Published onOctober 21, 2014What Is Proof by Contradiction?logicmathematicsA proof method that assumes the opposite first and shows its falsehood to reveal the truth.
Published onOctober 4, 2014What Is Acid Fog?air-quality-engineeringAcid fog is fog that has become highly acidic due to dissolved acidic pollutants.
Published onJuly 11, 2014What Is BTEX?soil-remediationBTEX refers to Benzene, Toluene, Ethylbenzene, and Xylene.