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 (cosmology)

Sigma in cosmology was a property of galaxies used when trying to work out the mystery of galaxies and their supermassive black holes.

History

In the late 1990s the NUKER experts had made observations with a spectroscope of two galaxies, one of an active galaxy with an active galactic nucleus called NGC10-68 and a dormant galaxy next door to us named Andromeda.

The observations are shown. The light from the centre in Andromeda galaxy was distorted proving the existence of super-massive black holes.

Other observations proved most galaxies had a similar centre whether it be active or dormant.

They then realised that the black holes must have something to do with a galaxy's formation, so they turned to something they thought was useless: the speed of the stars around the edge of the galaxy. This was Sigma, the speed of the stars at the edge of the galaxy supposedly unaffected by the mass of the black hole at the centre.

Usage In Cosmology

The NUKER team calculated the sigma of several stars in different galaxies and the mass of the black hole at the (nucleus) centre. They expected no correlation what so ever. But when plotting their results on a Scatter diagram and drawing a line of best fit they ended up with a positive correlation. It appeared that the heavier the black hole at the centre was the faster the stars within the galaxy travelled.

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".

Faithless (album)

Faithless is a live album by Richard Thompson. Released in 2004 on Thompson's own Beeswing label, it is compiled from recordings made during Thompson's 1985 tour in support of his Across A Crowded Room album, and subsequently features 6 of the 9 songs from that album.

The backing band for 1985 tour included the duo of Clive Gregson and Christine Collister whose vocals had been a feature of Across A Crowded Room. The band lineup for this tour placed most of the burden for instrument colour on Thompson and his guitar playing, but Gregson trades solos with Thompson on "Tear Stained Letter".

Track listing

All songs composed by Richard Thompson; except "Skull and Cross Bones" by Barbara Morgan and "Did She Jump Or Was She Pushed" by Richard and Linda Thompson.

Faithless (1932 film)

Faithless is a 1932 American Pre-Code romantic drama film about a spoiled socialite who learns a sharp lesson when she loses all her money during the Great Depression. The film stars Tallulah Bankhead and Robert Montgomery, and was based on Mildred Cram's novel Tinfoil, which was the film's working title.

Cast (in credits order)

Plot

Socialite Carol Morgan (Bankhead) romps through the Depression with her wealth, while breaking up with Bill Wade (Montgomery) and getting back together with him.

Reception

Mordaunt Hall, in his The New York Times review, called the film a "lumbering species of drama", though he appreciated the "capable performances" of the two leads.

References

External links

Faithless (novel)

Faithless is the fifth novel in the Grant County, Georgia series by author Karin Slaughter. It was originally published in hardback in 2005. It was a #1 The Times bestseller. Previous books in the series are Blindsighted, Kisscut, A Faint Cold Fear, and Indelible. These books star Sara Linton, Jeffrey Tolliver, and Lena Adams.

Summary

Sara and Jeffrey have finally started to click again when a phone call from the woman he was unfaithful with brings their affair back into sharp relief. He and Sara are arguing about this on a walk in the woods when they make a discovery: the corpse of a young woman who was buried alive in a wooden coffin. They assume her death was accidental, but the autopsy reveals that she was pregnant and had been murdered – while she was underground. The search for her identity leads Jeffrey and Lena to an organic soybean farming cooperative out in the sticks owned by a large, tightly knit, religious family, led by the charismatic oldest son. They import their labor force from the people that populate Atlanta's shelters and halfway houses, facilitated through the family church's outreach program. At one time or another the case involves strippers, the one-legged, one-eyed lawyer extraordinaire Buddy Conford, an abused woman Lena both identifies with and wants to save, and a search to find more buried coffins before it's too late. At the novel's conclusion, Sara finally agrees to remarry Jeffrey after at least four proposals, and Ethan pushes Lena so far that she decides it's time to escape.