Epsilon

Epsilon (uppercase Ε, lowercase ε or lunate ϵ; Greek: Έψιλον) is the fifth letter of the Greek alphabet, corresponding phonetically to a close-mid front unrounded vowel /e/. In the system of Greek numerals it has the value five. It was derived from the Phoenician letter He . Letters that arose from epsilon include the Roman E, Ë and Ɛ, and Cyrillic Е, È, Ё, Є and Э.

The name of the letter was originally εἶ (Ancient Greek: [êː]), but the name was changed to ἒ ψιλόν (e psilon "simple e") in the Middle Ages to distinguish the letter from the digraph αι, a former diphthong that had come to be pronounced the same as epsilon.

In essence, the uppercase form of epsilon looks identical to Latin E. The lowercase version has two typographical variants, both inherited from medieval Greek handwriting. One, the most common in modern typography and inherited from medieval minuscule, looks like a reversed "3". The other, also known as lunate or uncial epsilon and inherited from earlier uncial writing, looks like a semicircle crossed by a horizontal bar. While in normal typography these are just alternative font variants, they may have different meanings as mathematical symbols. Computer systems therefore offer distinct encodings for them. In Unicode, the character U+03F5 "Greek lunate epsilon symbol" (ϵ) is provided specifically for the lunate form. In TeX, \epsilon () denotes the lunate form, while \varepsilon () denotes the inverted-3 form.

Epsilon (rocket)

The Epsilon rocket (イプシロンロケット, Ipushiron roketto) (formerly Advanced Solid Rocket) is a Japanese solid-fuel rocket designed to launch scientific satellites. It is a follow-on project to the larger and more expensive M-V rocket which was retired in 2006. The Japan Aerospace Exploration Agency (JAXA) began developing the Epsilon in 2007. It is designed to be capable of placing a 1.2 tonne payload into low Earth orbit.

Vehicle description

The development aim is to reduce costs compared to the US$70 million launch cost of an M-V. The Epsilon costs US$38 million (£23m) per launch, which is half the cost of its predecessor. Development expenditures by JAXA exceeded US$200 million.

To reduce the cost per launch the Epsilon uses the existing SRB-A3 as a solid rocket booster on the H-IIA rocket as its first stage. Existing M-V upper stages will be used for the second and third stages, with an optional fourth stage available for launches to higher orbits. The J-1 rocket, which was developed during the 1990s, but abandoned after just one launch, used a similar design concept, with an H-II booster and Mu-3S-II upper stages.

Epsilon (wasp)

Epsilon is an Indomalayan and Australasian genus of potter wasps.

References

Warp

Warp, warped or warping may refer to:

Agriculture

Aviation

Ships

Books and comics

Music

Warp (album)

Warp is the third and final album from New Musik released on March 5, 1982.

Track listing

LP: EPC 85567

All songs written by Tony Mansfield, except where noted.

Side One

Side Two

2001 Epic Records International CD Reissue: EICP 7015

Warp (magazine)

Warp was a New Zealand magazine and official organ of the National Association for Science Fiction (NASF), the country's first national science fiction fan organisation.

History

First published in November 1977, Warp continued on a usually two-monthly schedule until the late 1990s, surviving for a short period independently after NASF went into recess. The magazine was published by Transworld. Excluding the APA Aotearapa, Warp was the first New Zealand science fiction publication to reach 100 issues, which it did in June 1995. In all, some 115 editions of Warp were produced. Its largest issues were 44 pages in length.

The location of Warp's publishing varied according to the home city of its editor, although during much of the later 1980s it was based in Christchurch, and during the early and mid 1990s it was based in Dunedin. At times the magazine's schedule was erratic, especially during the late 1980s and shortly before its demise in the late 1990s.

Originally published in A4 format, for much of its run it was A5 in size, returning to A4 shortly before its demise.