In ancient Rome, an angusticlavia, angusticlavus, or angustus clavus was a narrow-strip tunic (tunica) with two narrow vertical Tyrian purple stripes (clavi). The tunic was typically worn under the toga with the right side stripe visible. == Usage and significance == The angusticlavia was the tunic associated with the rank and office of the eques, or equestrians, one of the two highest legal orders in aristocratic Rome. Order members were military men, often patricians (patrici), who served as the cavalry units in war. During times of peace they frequently served as personal assistants to Roman...

The calorie is a unit of energy widely used in nutrition.For historical reasons, two main definitions of calorie are in wide use. The small calorie or gram calorie (usually denoted cal) is the amount of heat energy needed to raise the temperature of one gram of water by one degree Celsius (or one kelvin). The large calorie, food calorie, or kilocalorie (Cal, calorie or kcal) is the amount of heat needed to cause the same increase in one kilogram of water. Thus, 1 kilocalorie (kcal) = 1000 calories (cal). By convention in food science, the large calorie is commonly called Calorie (with a capital...

The Pyrrhic War (280–275 BC) was a war fought by Pyrrhus, the king of Epirus. Pyrrhus was asked by the people of the Greek city of Tarentum in southern Italy to help them in their war with the Roman Republic. A skilled commander, with a strong army fortified by war elephants (which the Romans were not experienced in facing), Pyrrhus enjoyed initial success against the Roman legions, but suffered heavy losses even in these victories. Plutarch wrote that Pyrrhus said after the second battle of the war, "If we are victorious in one more battle with the Romans, we shall be utterly ruined." He could...

Opinion polling has been regularly conducted in Brazil since the start of Jair Bolsonaro's four-year term administration, gauging public support for the President of Brazil and his government. Typically, an approval rating is based on responses to a poll in which a sample of people are asked to evaluate the overall administration of the current president. Participants might also be asked whether they approve of the way president handles his job, if they trust him, to rate his personality, or to opine on various policies promoted by the government. == Overall administration evaluation == The public...