On 17 February 1869, Russian chemist Dmitri Mendeleev jotted down the symbols for the chemical elements, putting them in order according to their atomic weights and inventing the periodic table.

The modern periodic table, arranged in rows and columns, was first introduced by Dmitri Mendeleev in 1869. At the time, it included the known elements and their properties, but Mendeleev predicted ...

Chinese smart home specialist SwitchBot has taken the covers off of its latest creations: the SwitchBot Air Purifier and the SwitchBot Air Purifier Table. The latter, as the name suggests, doubles up ...

We present a general method for solving the modified Helmholtz equation without shape approximation for an arbitrary periodic charge distribution, whose solution is known as the Yukawa potential or ...

About 300 cases were pending in court when Trump directed the Justice Department to dismiss the charges. Only two defendants were acquitted of all charges. Trump’s pardons and dismissals covered ...

Michigan has not closed the door on a future road usage charge (RUC) pilot. The state’s Department of Transportation (MDOT) would still be interested in a pay-per-mile road funding trial program ...

A Massachusetts man was arrested Tuesday on gun charges after he was found with a pistol in his waistband soon after touring the US Capitol in Washington, D.C., police said. US Capitol Police said ...