Gel

A gel (coined by 19th-century Scottish chemist Thomas Graham, by clipping from gelatine) is a solid, jelly-like material that can have properties ranging from soft and weak to hard and tough. Gels are defined as a substantially dilute cross-linked system, which exhibits no flow when in the steady-state. By weight, gels are mostly liquid, yet they behave like solids due to a three-dimensional cross-linked network within the liquid. It is the crosslinking within the fluid that give a gel its structure (hardness) and contribute to the adhesive stick (tack). In this way gels are a dispersion of molecules of a liquid within a solid in which the solid is the continuous phase and the liquid is the discontinuous phase.

Gel: Nonfluid colloidal network or polymer network that is expanded throughout its whole volume by a fluid.

Note 1: A gel has a finite, usually rather small, yield stress.

Note 2: A gel can contain:

Note 3: Corrected from ref., where the definition is via the property identified in Note 1 (above) rather than of the structural characteristics that describe a gel.

Fifth Harmony

Fifth Harmony is an American girl group formed on the second season of the The X Factor USA in July 2012. The group consists of members Ally Brooke, Normani Kordei, Dinah Jane, Camila Cabello, and Lauren Jauregui. They signed a joint deal with Syco Music, owned by Simon Cowell, and Epic Records, L.A. Reid's record label, after finishing in third place on the show. Since then, they have released an EP and a full-length album.

Following their exit from The X Factor, they released their debut single "Miss Movin' On". Their debut EP, Better Together was released in 2013 with a first week position of number six on the U.S. Billboard 200. The following year, they won the Artist to Watch award at the MTV Video Music Awards. The group released their debut studio album, Reflection in February 2015. It debuted at number five on the Billboard 200, selling 62,000 copies in the first week and was supported by the group's first major headlining tour, The Reflection Tour. The album included the singles "BO$$", "Sledgehammer" and the U.S. triple platinum "Worth It". The latter also became the group's first top 20 single on the Billboard Hot 100, and reached the top 10 in eight countries. Fifth Harmony has emerged as the most successful alumni from the X Factor U.S. franchise.