A symphonic poem or tone poem is a piece of orchestral music, usually in a single continuous movement, which illustrates or evokes the content of a poem, short story, novel, painting, landscape, or other (non-musical) source. The German term Tondichtung (tone poem) appears to have been first used by the composer Carl Loewe in 1828. The Hungarian composer Franz Liszt first applied the term Symphonische Dichtung to his 13 works in this vein. While many symphonic poems may compare in size and scale to symphonic movements (or even reach the length of an entire symphony), they are unlike traditional classical symphonic movements, in that their music is intended to inspire listeners to imagine or consider scenes, images, specific ideas or moods, and not (necessarily) to focus on following traditional patterns of musical form such as sonata form. This intention to inspire listeners was a direct consequence of Romanticism, which encouraged literary, pictorial and dramatic associations in music. According to the musicologist Hugh Macdonald, the symphonic poem met three 19th...

The light-water reactor (LWR) is a type of thermal-neutron reactor that uses normal water, as opposed to heavy water, as both its coolant and neutron moderator; furthermore a solid form of fissile elements is used as fuel. Thermal-neutron reactors are the most common type of nuclear reactor, and light-water reactors are the most common type of thermal-neutron reactor. There are three varieties of light-water reactors: the pressurized water reactor (PWR), the boiling water reactor (BWR), and (most designs of) the supercritical water reactor (SCWR). History Early concepts and experiments After the discoveries of fission, moderation and of the theoretical possibility of a nuclear chain reaction, early experimental results rapidly showed that natural uranium could only undergo a sustained chain reaction using graphite or heavy water as a moderator. While the world's first reactors (CP-1, X10 etc.) were successfully reaching criticality, uranium enrichment began to develop from theoretical concept to practical applications in order to meet the goal of the Manhattan...

The bony-eared assfish (Acanthonus armatus) is a bathypelagic species of cusk-eel found in tropical and sub-tropical oceans at depths of from 1,171 to 4,415 metres (3,842 to 14,485 ft). It has been found as far north as Queen Charlotte Sound off British Columbia's coast. This species grows to a length of 37.5 centimetres (14.8 in) SL. It is the only known member of its genus Acanthonus.The bony-eared assfish may have the smallest brain-to-body weight ratio of all vertebrates.Like many other creatures that dwell in the depths of the sea, assfish are soft and flabby with a light skeleton. This is likely to have resulted from a lack of food and the high pressures which accompany living at such a depth, making it difficult to generate muscle and bone. Etymology The type specimen was an 11.5-inch (29 cm) individual taken by the Challenger expedition (1872–1876) north of New Guinea at a depth of 1,075 fathoms (6,450 ft; 1,966 m). It was described in 1878 by German ichthyologist Albert Günther, who gave the species its scientific name. ...