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In 1925 the British adopted a new instrument developed by Vickers. It was a mechanical analogue computer Predictor AA No 1. Given the target height its operators tracked the target and the predictor produced bearing, quadrant elevation and fuse setting. These were passed electrically to the guns where they were displayed on repeater dials to the layers who 'matched pointers' (target data and the gun's actual data) to lay the guns. This system of repeater electrical dials built on the arrangements introduced by British coast artillery in the 1880s, and coast artillery was the background of many AA officers. Similar systems were adopted in other countries and for example the later Sperry device, designated M3A3 in the US was also used by Britain as the Predictor AA No 2. Height finders were also increasing in size, in Britain, the World War I Barr & Stroud UB 2 (7 feet optical base) was replaced by the UB 7 (9 feet optical base) and the UB 10 (18 feet optical base, only used on static AA sites). Goertz in Germany and Levallois in France produced 5 metre instruments. However, in most countries the main effort in HAA guns until the mid-1930s was improving existing ones, although various new designs were on drawing boards.
What was the Vickers device adopted by the British named?
A: Predictor AA No 1

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A number of special controllers designed for use with specific games were released for the system, though very few such devices proved particularly popular. Such devices included, but were not limited to, the Zapper (a light gun), the R.O.B., and the Power Pad. The original Famicom featured a deepened DA-15 expansion port on the front of the unit, which was used to connect most auxiliary devices. On the NES, these special controllers were generally connected to one of the two control ports on the front of the console.
How were the special controllers disconnected to the NES?
A: unanswerable

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From Elizabeth's birth onwards, the British Empire continued its transformation into the Commonwealth of Nations. By the time of her accession in 1952, her role as head of multiple independent states was already established. In 1953, the Queen and her husband embarked on a seven-month round-the-world tour, visiting 13 countries and covering more than 40,000 miles by land, sea and air. She became the first reigning monarch of Australia and New Zealand to visit those nations. During the tour, crowds were immense; three-quarters of the population of Australia were estimated to have seen her. Throughout her reign, the Queen has made hundreds of state visits to other countries and tours of the Commonwealth; she is the most widely travelled head of state.
In what year did Elizabeth become Queen?
A: 1952

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Lamps designed for different voltages have different luminous efficacy. For example, a 100-watt, 120-volt lamp will produce about 17.1 lumens per watt. A lamp with the same rated lifetime but designed for 230 V would produce only around 12.8 lumens per watt, and a similar lamp designed for 30 volts (train lighting) would produce as much as 19.8 lumens per watt. Lower voltage lamps have a thicker filament, for the same power rating. They can run hotter for the same lifetime before the filament evaporates.
What watt lamp can produce 17.3 lumens per watt?
A:
unanswerable