Operation Sigma Sigma

The Sigma is an experimental glider developed in Britain from 1966 by a team led by Nicholas Goodhart. After disappointing performance during flight testing the Sigma was passed on to a Canadian group which carried out modifications, making the Sigma more competitive.

Design and development

Designed to compete in the 1970 World Championships, the team aimed to develop a wing that would climb well through a high lift coefficient and a large wing area, but equally had the "maximum possible reduction of area for cruise at low lift coefficients". At the same time for the minimum possible drag they aimed for "extensive" laminar flow. To achieve this they employed flaps that would alter both wing area and wing camber. Based on analysis of the nature of thermals encountered in cross-country flying, they reasoned that by having a slow turning circle, their sailplane could stay close to the central (and strongest) part of the thermal and gain maximum benefit.

Its unusual feature is its ability to vary its wing area using Fowler flaps. It had been tried before by the Hannover Akaflieg in 1938 with their AFH-4, the South African Beatty-Johl BJ-2 Assegai and the SZD Zefir gliders.

Sigma (duo)

Sigma is an English drum and bass duo consisting of Cameron Edwards and Joe Lenzie. They met at Leeds University at drum and bass nights. Their 2010 collaboration with DJ Fresh, "Lassitude", peaked at number 98 on the UK Singles Chart. Their single "Nobody to Love" topped the UK Singles Chart, becoming their first UK number one. Follow-up single "Changing", featuring Paloma Faith, also got to number one.

Career

Formation

Lenzie and Edwards met in 2006 at Leeds University; Cameron was working in local record store Tribe Records and with Echo Location's Obi running local night Event Horizon, while Lenzie was DJing hip-hop and warming up Event Horizon for such acts as Rahzel and Grandmaster Flash. Once they had finished in Leeds, they relocated to London and became a three-piece with Edwards' school friend Ben Mauerhoff, being signed under DJ Fresh's Breakbeat Kaos. After a while, long distances took their toll – Edwards and Mauerhoff were based in Surrey, whereas Lenzie was based in Harpenden, Hertfordshire and they couldn't get three people into the Harpenden studio – and Mauerhoff left. In December 2008 they formed their own record label, Life Recordings (so called because, according to Lenzie, the industry demanded that it be their life). Its inaugural release was a VIP mix of their early Bingo Beats single "El Presidente".

Sigma baryon

The Sigma baryons are a family of subatomic hadron particles which have a +2, +1 or −1 elementary charge or are neutral. They are baryons containing three quarks: two up and/or down quarks, and one third quark, which can be either a strange (symbols Σ+, Σ0, Σ−), a charm (symbols Σ++
c, Σ+
c, Σ0
c), a bottom (symbols Σ+
b, Σ0
b, Σ−
b) or a top (symbols Σ++
t, Σ+
t, Σ0
t) quark. However, the top Sigmas are not expected to be observed as the Standard Model predicts the mean lifetime of top quarks to be roughly 6975500000000000000♠5×10⁻²⁵ s. This is about 20 times shorter than the timescale for strong interactions, and therefore it does not form hadrons.

List

The symbols encountered in these lists are: I (isospin), J (total angular momentum), P (parity), u (up quark), d (down quark), s (strange quark), c (charm quark), t (top quark), b (bottom quark), Q (charge), B (baryon number), S (strangeness), C (charmness), B′ (bottomness), T (topness), as well as other subatomic particles (hover for name).

Park Jung-suk (StarCraft player)

Park Jung-suk, also known as Reach or [Oops]Reach (born 27 December 1983) is a professional South Korean StarCraft player.

Park, who also goes by the usernames Six_Devil_nO.1, ChoGoSy or TechniCal, is recognized as one of the best Protoss players in the world, an accomplishment for which he has been nicknamed "Hero Toss". He is skillful at macromanagement and does successful psionic storms and dragoon dancing, but plays relatively inconsistently against Zerg. He won the 2002 Sky Ongamenet StarLeague, beating SlayerS `BoxeR` with a 3-1 score. He uses a Logitech optical mini (a gift from his fanclub) and Samsung DT-35 Black keyboard.

Park was the first player to achieve 100 Proleague victories, an accomplishment commemorated when he and Lee Jaedong (the second player to reach that benchmark) formed prints of their mouse-controlling hands in clay in a September 2009 ceremony.

Park is now a coach for League of Legends and Tekken team NaJin e-mFire in Korea.

Major achievements

Reach (Eyes Set to Kill song)

"Reach" is a song from an American metalcore band Eyes Set to Kill. It was released February 5, 2008 and was the lead single of the band from their debut album Reach. Alexia Rodriguez is now the vocals after Lindsey Vogt left. An acoustic version of the song will be included on Lexia's debut Underground Sounds.

Music video

The music video is shot at an old room of an eerie Victorian home. The video is about a girl (Alexia Rodriguez) who is packing her clothes. There are shots of the band playing the song. She is wondering inside the old house with many light bulbs. She picks her things - a guitar, a bag, and a microphone. In the later part, she's in bed singing this part, "I try to reach you but I fall". When the song is about to finish, she leaves the house with her things and walks down in a car junkyard.

Track listing

References

Reach (brand)

Reach is a brand of oral hygiene products, including toothbrushes, dental floss and mouthwash. The brand started from Reach toothbrushes developed by DuPont in 1976.

History

70s

1976 - DuPont enters toothbrush market after 4 years of research conducted by "bio-dental team" from Tufts University, headed by Percy H. Hill Jr., consultant to Applied Ergonomics company. Reach Toothbrush was the first ergonomically designed toothbrush, that proved significantly better in clinical trials and spawned a whole new field of “toothbrush design”.

1976 article at Chicago Tribune highlights the following unique selling propositions of the new toothbrush: "an angled-shaped four-sided handle (for comfortable gripping) with an extended neck (that makes hard-to-reach areas more accessible), and a compact head topped with bilevel bristles".

DuPont started new toothbrush promotion in April 1976 first in Green Bay, Wisconsin, then moved to Chicago, with advertising in newspapers and on TV.

1977 - Johnson & Johnson acquires Reach brand from DuPont, outmaneuvering Procter & Gamble.