Daily Content Archive
(as of Friday, April 29, 2022)| Word of the Day | |||||||
|---|---|---|---|---|---|---|---|
diaphanous
| |||||||
| Daily Grammar Lesson | |
|---|---|
Understanding Tenses in EnglishGrammatical tense refers to the conjugation of a verb to reflect its place in time—that is, when the action occurred. There are technically only two grammatical tenses in English: the past and the present. Why is English considered not to have a true future tense? More... | |
| Article of the Day | |
|---|---|
 The Cardiac CycleThe sequence of events that occurs as the heart pumps blood through the body is called the cardiac cycle. A single "beat" involves systole, diastole, and an intervening pause. Systole is the contraction of the heart, during which blood in the chambers is forced onward. Diastole is the relaxation and dilatation of the chambers, especially the ventricles, during which they fill with blood. What onomatopoeic words are used in medical literature to describe the heartbeat sound heard during systole? More... | |
| This Day in History | |
|---|---|
 The Elektromote Is Tested (1882)Ernst Werner von Siemens demonstrated his Elektromote, the world's first trolleybus, on a 591-yard (540-m) test track in a suburb of Berlin, Germany. The trolleybus was a converted four-wheel coach equipped with two electric motors. Electric power was transmitted to the coach via a flexible cable from a small, eight-wheeled "contact car" running on the power lines above. How long was the Elektromote in operation? More... | |
| Today's Birthday | |
|---|---|
 Henri Poincaré (1854)One of the greatest mathematicians of his age, Poincaré made important contributions across the full range of mathematics, both pure and applied. He enlarged the field of mathematical physics through his work on the theory of functions, did notable work in differential equations and celestial mechanics, and also wrote extensively on the philosophy of science. He was elected to the Academy of Sciences in 1887 and the Academie Française in 1909. How many hours a day did he devote to his work? More... | |
| Quotation of the Day | |
|---|---|
 The devil can cite Scripture for his purpose.William Shakespeare (1564-1616) | |
| Idiom of the Day | |
|---|---|
first impression— The initial, introductory evaluation upon meeting a person, encountering something, or experiencing a situation for the first time. More... | |
| Today's Holiday | |
|---|---|
 New Orleans Jazz and Heritage Festival (2023)A 10-day feast for the ears, the eyes, and the stomach held in New Orleans, Louisiana, this festival brings together thousands of musicians, artisans, and cooks who do their thing for more than half a million visitors. The concerts feature not only traditional and contemporary jazz, but also other music forms developed in New Orleans: ragtime, country, Cajun, zydeco, gospel, folk, and Latin. Food tents serve a multitude of indigenous foods, such as jambalaya, andouille, crawfish bisque, gumbo, frog legs, and so on. Hundreds of artisans also display their crafts. More... | |
| Word Trivia | |
|---|---|