A Shepard tone, named after Roger Shepard, is a sound consisting of a superposition of sine waves separated by octaves. When played with the bass pitch of the tone moving upward or downward, it is referred to as the Shepard scale. This creates the auditory illusion of a tone that seems to continually ascend or descend in pitch, yet which ultimately gets no higher or lower.
Manicouagan Reservoir is an annular lake in central Quebec, Canada, covering an area of 1,942 km2 (750 sq mi). The lake island in its centre is known as René-Levasseur Island, and its highest point is Mount Babel. The structure was created 214 million years ago, in the Late Triassic, by the impact of a meteorite 5 km (3 mi) in diameter. The lake and island are clearly seen from space and are sometimes called the "eye of Quebec".
On August 6, 1945, at a quarter-past 8 a.m., bonsai master Masaru Yamaki was inside his home when glass fragments hurtled past him, cutting his skin, after a strong force blew out the windows of the house. The U.S. B-29 bomber called the “Enola Gay” had just dropped the world’s first atomic bomb over the city of Hiroshima, at a site just two miles from the Yamaki home. The bomb wiped out 90 percent of the city, killing 80,000 Japanese immediately and eventually contributing to the death of at least 100,000 more. But besides some minor glass-related injuries, Yamaki and his family survived the blast, as did their prized bonsai trees, which were protected by a tall wall surrounding the outdoor nursery.
Once a year, on cues from the lunar cycle and the water temperature, entire colonies of coral reefs simultaneously release their tiny eggs and sperm, called gametes, into the ocean.
Jerzy Urban was a Polish journalist, commentator, writer and politician. A staunch anticlerical and pro-communist throughout his life, he frequently was the centre of numerous controversies due to his unfiltered comments and entrenched political views resulting in support of the communist regime; on the other hand, he was a sharp-witted, intelligent and uncompromising satirist, writer and journalist.
The Sakya Monastery, first founded in 1073, is the most important seat of the Sakya school of Tibetan Buddhism. This ancient monastery is of cultural significance because it is home to some of the oldest Tibetan artwork and thousands of ancient manuscripts and books. There are about 84,000 books in the library and one of the books weighs over 500 kg.
A Mongolian spot is a benign, flat, congenital birthmark with wavy borders and an irregular shape. In 1883, it was described and named after Mongolians by Erwin Bälz, a German anthropologist based in Japan, who erroneously believed it to be most prevalent among his Mongolian patients. It normally disappears three to five years after birth and almost always by puberty. The most common color is blue, although they can be blue-gray, blue-black or deep brown.
Gérald Genta was a Swiss watchmaker and artist. He is known for his eponymous lines of timepieces, such as Gerald Genta and Gerald Charles, as well as his design work with other high-end watch manufacturers, including IWC, Omega, Universal Genève, Patek Philippe and Audemars Piguet. Genta created the Patek Phillipe Nautilus and the Audemars Piguet Royal Oak, to date, the best-selling models of both houses.
Julia Lorraine Hill is an American environmental activist and tax redirection advocate. She is best known for having lived in a 200-foot (61 m)-tall, approximately 1000-year-old California redwood tree for 738 days between December 10, 1997, and December 18, 1999. Hill lived in the tree, affectionately known as Luna, to prevent Pacific Lumber Company loggers from cutting it down. She ultimately reached an agreement with the lumber company to save that tree.
Hanuman Books was a series of books published between 1986 and 1993 out of the Chelsea Hotel in New York City. Featuring some of the biggest names in avant-garde culture of the time – including figures from Beat poetry, gay and trans culture, Warhol's Factory, San Francisco's North Beach and New York's Lower East Side art scenes, the Naropa Institute, contemporary music and film – the series has since acquired a cult following.