Named for the third Greek letter, they resemble X rays but have shorter wavelengths
A battery may have a single one of these electricity producing units or have several connected in series
The simplest of the aldehyde compounds, it prevents deterioration of protein-rich substances
4-letter word for the force that hinders an airplane's forward thrust, caused by friction with the air
The MR in MRI, it's the absorption of energy by atoms
Thousands of these Protestants were killed by pro-Catholic forces in the Massacre of Saint Bartholomew's Day
In 1709 Sweden was defeated by this Russian czar in the Battle of Poltava, losing its dominance in the Baltic area
In 1996 Emil Constantinescu defeated Ion Iliescu in a runoff election for president of this country
In 1905 journalist Arthur Griffith founded this political party, urging the Irish to not pay taxes to the British
In 1928 this finance minister grabbed power & began his 40-year rule as dictator of Portugal