Armadillo Enterprises

Armadillo Enterprises, Inc., is a company established in 1995 as a distributor of musical instruments. They own the following:

Luna Guitars is a manufacturer and seller of stringed instruments (guitars, basses, ukuleles, mandolins, and banjos). The company was founded in 2005 by stained-glass artist Yvonne de Villiers under the umbrella of Armadillo Enterprises and headquartered in Tampa Florida. Luna guitars are notable for their unique ornamentation that is heavily influenced by Yvonne's glass work.

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Verdena

Verdena are an Italian alternative rock band originating from Albino, Bergamo. As of February 2015, they have released six full-length albums on Universal Music Group.

History

Alberto (guitarist) and Luca Ferrari (drummer) are brothers and have been playing together for 10 years. With the addition of Roberta Sammarelli (bassist), they formed the band Verdena. In 1999 they broke onto the scene with their eponymous debut, and began to perform concerts all across Italy. Their first single, "Valvonauta", received significant airtime on MTV and other music stations. Their style can be described as a mixture of rock, grunge and psychedelia.

Their second album, Solo un grande sasso, exhibited longer songs with more frequent guitar solos. The most important tracks of this album are "Spaceman", "Nova", "Starless" and "Centrifuga".

In 2004, Fidel Fogaroli joined the band as a keyboardist, appearing on the album Il suicidio del samurai. In 2006, Fidel left Verdena and the band returned to its original three-piece setup. The single "Luna", originally released on Il suicidio dei Samurai, was one of the band's most notable successes.

Moon

The Moon (in Greek: σελήνη Selene, in Latin: Luna) is Earth's only natural satellite. It is one of the largest natural satellites in the Solar System, and, among planetary satellites, the largest relative to the size of the planet it orbits (its primary). It is the second-densest satellite among those whose densities are known (after Jupiter's satellite Io).

The Moon is thought to have formed approximately 4.5 billion years ago, not long after Earth. There are several hypotheses for its origin; the most widely accepted explanation is that the Moon formed from the debris left over after a giant impact between Earth and a Mars-sized body called Theia.

The Moon is in synchronous rotation with Earth, always showing the same face with its near side marked by dark volcanic maria that fill between the bright ancient crustal highlands and the prominent impact craters. It is the second-brightest regularly visible celestial object in Earth's sky after the Sun, as measured by illuminance on Earth's surface. Although it can appear a very bright white, its surface is actually dark, with a reflectance just slightly higher than that of worn asphalt. Its prominence in the sky and its regular cycle of phases have, since ancient times, made the Moon an important cultural influence on language, calendars, art, and mythology.

Gain (projection screens)

Gain is a property of a projection screen, and is one of the specifications quoted by projection screen manufacturers.

Interpretation

The number that is typically measured is called the peak gain at zero degrees viewing axis, and represents the gain value for a viewer seated along a line perpendicular to the screen's viewing surface. The gain value represent the ratio of brightness of the screen relative to a set standard (in this case, a sheet of magnesium carbonate). Screens with a higher brightness than this standard are rated with a gain higher than 1.0, while screens with lower brightness are rated from 0.0 to 1.0. Since a projection screen is designed to scatter the impinging light back to the viewers, the scattering can either be highly diffuse or highly concentrated. Highly concentrated scatter results in a higher screen gain (a brighter image) at the cost of a more limited viewing angle (as measured by the half-gain viewing angle), whereas highly diffuse scattering results in lower screen gain (a dimmer image) with the benefit of a wider viewing angle.