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 (Dreamtale album)

Epsilon is the fifth studio album by Finnish power metal band Dreamtale. Released on The Secret Door record label on 11 May 2011 in Finland, with an earlier 20 April 2011 release in Japan, it reached number 39 on Suomen virallinen lista, The Official Finnish Charts.

Track listing

Personnel

Enterprise (soundtrack)

Enterprise is the soundtrack for the first season of Star Trek: Enterprise. It features the opening title song, "Where My Heart Will Take Me", as sung by Russell Watson, alongside instrumental compositions by Dennis McCarthy.

Background

McCarthy first became involved in composing music for Star Trek with the first episode of Star Trek: The Next Generation, "Encounter At Farpoint". He went on to work on several more Star Trek series, along with the film Star Trek Generations. He won an Emmy Award for his composition of the theme tune for Star Trek: Deep Space Nine. He recorded the score for the pilot episode, "Broken Bow", with an orchestra on September 10 and 11, 2001. Despite an offer to postpone the recording on the second day because of the September 11 attacks, they decided to continue recording the music. McCarthy described this as "the hardest recording session of my entire career".

It was rumoured that Jerry Goldsmith would compose the theme tune for Enterprise, having previously created the themes for both The Next Generation and Star Trek: Voyager. This was later denied on his official website, and series executive producer Rick Berman explained that they would be seeking to use "a little bit more contemporary kind of music".

USS Enterprise (1775)

Enterprise was a Continental Navy sloop-of-war that served in Lake Champlain during the American Revolutionary War. She is the first of a long and prestigious line of United States Navy ships to bear the name Enterprise.

Enterprise was originally a British topsail schooner (classified as a "sloop-of-war" by the Royal Navy, not to be confused with an actual sloop, which has only a single mast) named George, built at St. Johns (now Saint-Jean-sur-Richelieu) in Quebec, Canada. In May 1775, a small American force under Colonel Benedict Arnold sailed up the Richelieu River on the recently captured Liberty. At 07:00 on 18 May, Arnold and 35 raiders captured the fort and shipyards at St. Johns, along with the newly launched George, with no loss of life. The unlaunched schooner Royal Savage was also at the shipyard, and would be captured by the Americans later that year. Two hours later Arnold's raiders left with the newly captured sloop, which was later armed with 12 guns and renamed Enterprise.

Enterprise (computer)

The Enterprise is a Zilog Z80-based home computer first produced in 1985. It was developed by British company Intelligent Software and marketed by Enterprise Computers. Its two variants are the Enterprise 64, with 64 kilobytes (kB) of Random Access Memory (RAM), and the Enterprise 128, with 128 kB of RAM.

Hardware

CPU, memory and ASIC chips

The Enterprise has a 4 megahertz (MHz) Z80 Central processing unit (CPU), 64 kB or 128 kB of RAM, and 32 kB of internal read-only memory (ROM) that contains the EXOS operating system and a screen editor / word processor. The BASIC programming language was supplied on a 16 kB ROM module.

Two application-specific integrated circuit (ASIC) chips take some of the workload off of the central processor. They are named "Nick" and "Dave" after their designers, Nick Toop, who had previously worked on the Acorn Atom, and Dave Woodfield. "Nick" manages graphics, while "Dave" handles sound and memory paging (bank switching).