The largest Van de Graaf generator was built by Dr. Robert J. Van de Graaf in 1931 at the Massachussetts Institute of Technology. It was originally used to research high-energy X-rays and atom smashing, but is now on permanent display at the Thomson Theater of Electricity at the Boston Museum of Science, where it is demonstrated every day. It consists of two columns each with a 4.57 m (15 ft) hollow aluminium sphere at the top. Originally the two sphere were oppositely charged which resulted Continue reading →

The largest vacuum cleaner in the world, unveiled on 30 October 2004 in Anaheim, California, USA, was built on Discovery Channel’s BIG! television show and is 19 ft 5.75 in (5.93 m) tall, 6 ft 4.25 in (1.92 m) wide and 6 ft 11.5 (2.11 m) deep. The vacuum cleaner was a replica of a Dyson. The tyre/wheel diameter was 1 ft 11 1/2 in, The collection chamber was 2 ft 9 in wide and 4 ft 11 in long. The capacity of the chamber Continue reading →

The world’s largest vacuum chamber is the Space Power Facility, at NASA’s Glenn Research Center, Plum Brook Station, Sandusky, Ohio, USA. It measures 30.4m (100ft) in diameter and 37m (122ft) in height. It can sustain a high vacuum of 10-6 ( -6 is superscript, will change once on database) torr and simulate solar radiation using a 4 megawatt quartz heat lamp array, as well as temperatures as low as -195.5C (-320F). It is used to test the performance of spacecraft and space hardware, prior to Continue reading →

The final episode of M*A*S*H Goodbye, Farewell and Amen transmitted by CBS on 28 February 1983 to 60.3% of all households in the United States. It was estimated that some 125 million people tuned in, taking a 77% share of all viewing.

The US Navy LSV-2 Cutthroat is the largest unmanned submarine in existence. It is 33.83 m (111 ft) long, 3.05 m (10 ft) wide, and weighs 205 tonnes (451,950 lb). The experimental craft is a 1:4 (25%) scale model of the Navy’s Virginia class attack submarine, which is currently under development. The unarmed Cutthroat is powered by a 2,250 kW (3,000 hp) electric motor, and acts as a platform to test stealth technologies being developed for the Virginia class ships. By comparison, the 3-man Alvin Continue reading →

The largest wallet measures 314 cm (10 ft 0.63 in) long and 306 centimetres (10 ft 05 in) high and was produced by the Big Skinny Corporation (USA). It was presented and measured in Cambridge, Massachusetts, USA, on 26 November 2010. The wallet was an outsized to scale replica of an existing wallet design, manufactured by the Big Skinny Corporation.

A giant watering can constructed of galvanised steel was constructed for Utica Zoo, New York, USA. It weighs 907.1 kg (2000 lb) and measures 4.7 m (15.5 ft) high with a diameter of 3.65 m (12 ft). It arrived at the zoo by truck on 5 December 2000.

The largest water pistol fight involved 3,875 participants and was achieved by the University of California, Irvine at an event organised by NLA Sports (both USA) in Irvine, California, USA, on 24 September 2013. Students from the University of California, Irvine, were divided into two teams that wore the colors blue and gold respectively, fought a battle with water pistols that lasted twelve minutes.

The largest water balloon fight consisted of 8,957 participants and was achieved by Christian Student Fellowship at the University of Kentucky (USA) in Lexington, USA, on 27 August 2011. 175,141 water balloons were used during the fight.

The largest watch store is the Tourneau Time Dome, situated within The Forum Shops at Caesars, Las Vegas, Nevada, USA. The store covers an area of 1579.36 m² (17,000 ft²) and was opened in February 2005.