...that Hertfordshire puddingstone is a conglomerate rock named after its resemblance to Christmas pudding ?
... that the 12th century illuminated manuscript the Codex Calixtinus is prefaced by a forged letter purporting it to be the work of Pope Callixtus II ?
Anatomy Lesson of Dr. Nicolaes Tulp ... that the autopsy depicted in Rembrandt Harmenszoon van Rijn's oil painting Anatomy Lesson of Dr. Nicolaes Tulp (pictured ) was a real event which took place on January 16, 1632?
... that the New Testament 's "camel passing through the eye of a needle " is an example of adynaton , an extreme form of hyperbole used to imply impossibility?
...that a quadrature phase booster is a specialised form of transformer used to control the flow of electric power on electricity transmission networks ?
... that the Scouting movement's "one good turn" was inaugurated on behalf of British newspaper magnate Cyril Arthur Pearson , who founded several newspapers before going blind with glaucoma and then devoted his life in support of the blind ?
... that the early contact lens pioneer August Müller demonstrated his technique for grinding scleral lenses by correcting his own severe myopia ?
... that videokeratography is a non-invasive medical imaging technique for mapping the surface topology of the cornea ?
... that Corippo , despite being a contender for Switzerland 's smallest municipality with a population of only 17, has its own website , coat of arms , mayor and town council ?
... that the Strépy-Thieu boat lift in Belgium is the tallest boat lift in the world at 73 metres high and has a structural mass of 200,000 tonnes?
... that some elements of the Jules Verne adventure story Two Years' Vacation are to be found in William Golding 's Lord of the Flies , written 66 years later?
... that the taekwondo form Ko-Dang was named after Korean nationalist Cho Man-sik , imprisoned and executed for his opposition to Kim Il-sung 's communists ?
...that Unsinkable Sam was a ship's cat of both the Kriegsmarine and Royal Navy during the Second World War who survived the sinking of all three ships on which he served?
... that TenneT , the Dutch transmission system operator , is a joint owner of the ±450 kV, 580-km NorNed , the longest high-voltage undersea power line in the world?
... that a dispatcher training simulator is a computer-based training system which simulates the behaviour of an electrical power system ?
... that a Carley float was a liferaft fashioned from a large ring of copper tubing surrounded by cork and canvas ?
... that conductor gallop , the wind-induced 1 Hz oscillation of overhead transmission lines , is also known as "dancing"?
... that the dumbbell -shaped devices commonly seen on overhead power lines are Stockbridge dampers , used to suppress wind-induced vibrations ?
... that Cavallo's multiplier was an 18th-century electrostatic influence machine used to amplify electric charge ?
... that arcing horns are projecting conductors used to protect insulators on high voltage transmission systems from damage during flashover ?
... that the Jadad scale is the world's most widely used means of assessing the methodological quality of clinical trials ?
... that Réseau de Transport d'Électricité , Europe's largest transmission system operator , manages a 100,000-kilometre (62,000 mi) network of high-voltage power lines ?
... that Hesketh Hesketh-Prichard was an explorer, adventurer, big-game hunter , international cricketer , novelist and marksman who founded the British Army 's sniping school during the First World War ?
... that live-line working involves making contact with a power line that may be energized up to 1,150,000 volts ?
... that the village of Christmas Common was the home of philologist and lexicographer William Craigie ?
... that Christmas Island National Park hosts the world's largest population of the world's largest land invertebrate , the Coconut crab ?
... that Polish writer Franciszek Karpiński is best remembered through his hymns and carols ?
... that the 1774 Schiehallion experiment to calculate the density of the Earth also made the first use of contour lines to represent height?