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Atoms are the basic particles of the chemical elements. An atom consists of a nucleus of protons and generally neutrons, surrounded by an electromagnetically bound swarm of electrons. The chemical elements are distinguished from each other by the number of protons that are in their atoms. For example, any atom that contains 11 protons is sodium, and any atom that contains 29 protons is copper. Atoms with the same number of protons but a different number of neutrons are called isotopes of the same element.
Heavy water is a form of water in which hydrogen atoms are all deuterium rather than the common hydrogen-1 isotope that makes up most of the hydrogen in normal water. The presence of the heavier isotope gives the water different nuclear properties, and the increase in mass gives it slightly different physical and chemical properties when compared to normal water.
Nemesis is a Greek mythological spirit of divine retribution against those who succumb to hubris. Nemesis may also refer to:
A transporter is a fictional teleportation machine used in the Star Trek universe. Transporters allow for teleportation by converting a person or object into an energy pattern, then sending ("beaming") it to a target location or else returning it to the transporter, where it is reconverted into matter ("rematerialization").
A Fresnel lens is a type of composite compact lens which reduces the amount of material required compared to a conventional lens by dividing the lens into a set of concentric annular sections.
Blake's 7 is a British science fiction television programme produced by the BBC. Four 13-episode series were broadcast on BBC1 between 1978 and 1981. It was created by Terry Nation, who also wrote the first series, produced by David Maloney and Vere Lorrimer, and the script editor throughout its run was Chris Boucher, who wrote nine of its episodes. The main character for the first two series was Roj Blake, played by Gareth Thomas.
A shipwreck is the wreckage of a ship that is located either beached on land or sunken to the bottom of a body of water. Shipwrecking may be intentional or unintentional. There were approximately three million shipwrecks worldwide as of January 1999, according to Angela Croome, a science writer and author who specialized in the history of underwater archaeology.
"Balance of Terror" is the fourteenth episode of the first season of the American science fiction television series Star Trek. Written by Paul Schneider and directed by Vincent McEveety, it first aired on December 15, 1966.
Round the Twist is an Australian children's comedy drama television series which follows the supernatural adventures of the Twist family, who leave their conventional residence to live in a lighthouse, in the fictional coastal town of Port Niranda.
Williamstown is a suburb in Melbourne, Victoria, Australia, 11 km (6.8 mi) south-west of Melbourne's Central Business District, located within the City of Hobsons Bay local government area. Williamstown recorded a population of 14,407 at the 2021 census.
Goodwin Sands is a 10-mile-long (16 km) sandbank at the southern end of the North Sea lying 6 miles (10 km) off the Deal coast in Kent, England. The area consists of a layer of approximately 25 m (82 ft) depth of fine sand resting on an Upper Chalk platform belonging to the same geological feature that incorporates the White Cliffs of Dover. The banks lie between 0.5 m above the low water mark to around 3 m (10 ft) below low water, except for one channel that drops to around 20 m (66 ft) below. Tides and currents are constantly shifting the shoals.
The Wow! signal was a strong narrowband radio signal detected on August 15, 1977, by Ohio State University's Big Ear radio telescope in the United States, then used to support the search for extraterrestrial intelligence. The signal appeared to come from the direction of the constellation Sagittarius and bore expected hallmarks of extraterrestrial origin.
Split Point Lighthouse is a lighthouse located in Aireys Inlet, a small town on the Great Ocean Road, Victoria, Australia.
The archaeology of shipwrecks is the field of archaeology specialized most commonly in the study and exploration of shipwrecks. Its techniques combine those of archaeology with those of diving to become Underwater archaeology. However, shipwrecks are discovered on what have become terrestrial sites.
"Scorpion" is a two-part episode of the American science fiction television series Star Trek: Voyager that served as the last episode of its third season and the first episode of its fourth season. "Scorpion" introduced the Borg drone Seven of Nine and Species 8472 to the series.
Magdalena was a 17,547 GRT passenger and refrigerated cargo ocean liner that Harland and Wolff built in Belfast in 1948 for Royal Mail Lines (RML). Launched on 11 May 1948, she was the third-largest ship being built in a UK shipyard at that time.
The lighthouse and naval vessel urban legend describes an encounter between a large naval ship and what at first appears to be another vessel, with which the ship is on a collision course. The naval vessel, usually identified as of the United States Navy or the United Kingdom's Royal Navy and generally described as a battleship or aircraft carrier, requests that the other ship change course. The other party, generally identified as Canadian or often Irish and occasionally Spanish, responds that the naval vessel should change course, whereupon the captain of the naval vessel reiterates the demand, identifying himself and the ship he commands and sometimes making threats. This elicits the response "I'm a lighthouse. Your call." or something similar, a punchline which has become shorthand for the entire anecdote.
This is a list of characters from Blake's 7, a media franchise created by Terry Nation.
The Queen Bee was a wooden carvel Twin-screw steamer built in 1907 at the Rock Davis shipyard at Blackwall, New South Wales, that was wrecked when she sprang a leak whilst carrying coal between Newcastle and Sydney. She was lost off Barrenjoey Head, Broken Bay, New South Wales on 2 September 1922.
I-36 was an Imperial Japanese Navy B1 type submarine. Completed and commissioned in 1942, she served in World War II, operating in the Guadalcanal campaign, New Guinea campaign, Aleutian Islands campaign, and the Marshall Islands. She finished the war as a kaiten manned suicide attack torpedo carrier, operating against Allied ships at Ulithi Atoll and in the Philippine Sea. The only submarine of her class to survive the war, she surrendered to the Allies in September 1945 after the end of the war and was scuttled by the United States Navy in 1946.
References
- ↑ "Australian Television: Alpha Scorpio". Australian Television Information Archive. AustralianTelevision.net. 29 April 2007.
- ↑ "Alpha Scorpio". Australian TV - All Saints to Autumn Affair. MemorableTV.com. 2002. Archived from the original on 9 November 2002.
- ↑ Harrison, Tony (2004). "Alpha Scorpio". The Australian Film & Television Companion (1995). MilesAgo.com.