Daily Content Archive
(as of Thursday, December 7, 2023)| Word of the Day | |||||||
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effervescent
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| Daily Grammar Lesson | |
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Personal pronounsA personal pronoun is a pronoun (a word that functions as and acts as a substitute for a noun or nouns) that represents a grammatical person within a sentence. The personal pronoun that is used varies depending on which four grammatical elements? More... | |
| Article of the Day | |
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 Wave PowerWave power is a form of renewable energy that may be harnessed for use in electricity generation. Capturing the energy of ocean surface waves and converting it into a useable form of electrical energy is a difficult task, and a major technological breakthrough is necessary for it to contribute significantly to the world's energy needs. Salter's Duck, invented in 1974, remains the device against which all other wave energy systems are measured. Why did wave power funding dry up in the 1980s? More... | |
| This Day in History | |
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 "The Blue Marble" Photograph Taken by Apollo 17 Crew (1972)"The Blue Marble" is a famous photograph of Earth taken by the crew of the Apollo 17 spacecraft while traveling toward the Moon in 1972. So-titled because the Earth resembles a blue marble—accented by swirls of white clouds—the image is among the most widely distributed photographs in history. Depicting a fully lit Earth, the snapshot was originally taken "upside-down," with Antarctica on top, but was rotated before distribution. How did NASA update the image in 2005? More... | |
| Today's Birthday | |
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 Theodor Schwann (1810)Schwann was a German physiologist who founded modern histology by recognizing the cell as the basic unit of animal structure. He also studied nerve structure, discovering the myelin sheath covering nerve cells, and formulated the basic principles of embryology. While investigating digestive processes, he isolated a substance responsible for digestion in the stomach, the first enzyme prepared from animal tissue, and named it pepsin. What other common scientific term was coined by Schwann? More... | |
| Quotation of the Day | |
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 You are not angry with people when you laugh at them. Humor teaches tolerance.W. Somerset Maugham (1874-1965) | |
| Today's Holiday | |
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 Pearl Harbor Day (2023)Pearl Harbor Day marks the anniversary of the Japanese raid on Pearl Harbor in 1941, bringing the United States into World War II and widening the European war to the Pacific. Many states proclaim a Pearl Harbor Remembrance Day, and each year services are held on December 7 at the Arizona Memorial in Pearl Harbor. The marble memorial, built over the sunken USS Arizona and dedicated in 1962, was designed by architect Alfred Preis, a resident of Honolulu who was an Austrian citizen in 1941 and was interned as an enemy alien. More... | |
| Word Trivia | |
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Today's topic: religionnullifidian - Someone having no faith or religion; a disbeliever. More... apostasy - Abandonment or renunciation of one's religion or morals. More... renegade - First referred to a person who abandons one religion for another. More... secular - Has a root meaning of "temporal"—opposed to the eternity of the church—and means "not connected to a religion." More... | |