Phase

Phase or phases may refer to:

In science

In physics

Planetary phase

Refers to the periods of time during which a planet's surface reflects different amounts of sunlight, revealing different portions of the planet's surface from the perspective of a given point in space.

Inferior planets

The two inferior planets, Mercury and Venus, which have orbits that are smaller than the Earth's, exhibit the full range of phases as does the Moon, when seen through a telescope. Their phases are "full" when they are at superior conjunction, on the far side of the Sun as seen from the Earth. (It is possible to see them at these times, since their orbits are not exactly in the plane of Earth's orbit, so they usually appear to pass slightly above or below the Sun in the sky. Seeing them from the Earth's surface is difficult, because of sunlight scattered in Earth's atmosphere, but observers in space can see them easily if direct sunlight is blocked from reaching the observer's eyes.) The planets' phases are "new" when they are at inferior conjunction, passing more or less between the Sun and the Earth. (Sometimes they appear to cross the solar disk, which is called a transit of the planet.) At intermediate points on their orbits, these planets exhibit the full range of crescent and gibbous phases.

Phase (waves)

Phase in sinusoidal functions or in waves has two different, but closely related, meanings. One is the initial angle of a sinusoidal function at its origin and is sometimes called phase offset or phase difference. Another usage is the fraction of the wave cycle that has elapsed relative to the origin.

Formula

The phase of an oscillation or wave refers to a sinusoidal function such as the following:

where , , and are constant parameters called the amplitude, frequency, and phase of the sinusoid. These functions are periodic with period , and they are identical except for a displacement of along the axis. The term phase can refer to several different things:

It can refer to a specified reference, such as , in which case we would say the phase of is , and the phase of is .

It can refer to , in which case we would say and have the same phase but are relative to their own specific references.

In the context of communication waveforms, the time-variant angle , or its principal value, is referred to as instantaneous phase, often just phase.

Silly (song)

"Silly" is a song written by Fritz Baskett, Clarence McDonald and Deniece Williams and performed by Williams. The soulful ballad was released off Williams' My Melody album in 1981 and became the most successful track off the album reaching as high as number fifty-three on the Billboard Hot 100 becoming an even bigger success on the R&B chart where it peaked at number-eleven. It has since gone on to become one of Williams' most requested songs over a career that has spanned over thirty years. The song featured production by Williams and respected Philly soul producer Thom Bell. The song was recorded at Philadelphia's acclaimed Sigma Sound Studios. The song would be later covered by singer Taral Hicks nearly two decades later in 1997 and was released as the second single off Hicks' debut album becoming a hit on the R&B chart.

One of Williams' influences, Patti LaBelle, later recorded the song for her 2005 album, Classic Moments. Singer Monica later sampled the instrumental intro and bridge of the song for her number-one R&B hit, "Everything to Me" and also interpolated Williams' ending high notes at the end of the song. Monica and Williams sang "Everything to Me" and "Silly" respectively together at the BET Awards in 2010. The-Dream also sampled the song for his song "Silly", which featured Casha, on his free mixtape 1977.

Sha (Queen Wei album)

Silly (傻) is the debut album released by Taiwanese singer and songwriter Queen Wei (魏如昀).

Track listing