Surfactant Surfactant Surfactants are compounds that lower the surface tension (or interfacial tension) between two liquids, between a gas and a liquid, or between a liquid and a solid. Surfactants may act as detergents, wetting agents, emulsifiers, foaming agents, and dispersants. The term "surfactant" is a blend of "surface active agent". In the United States National Library of Medicine's Medical Subject Headings (MeSH) vocabulary, "surfactant" is reserved for the meaning pulmonary surfactant. For the more general meaning, "surface active agent/s" is the heading. Surfactants are usually organic compounds that are amphiphilic, meaning they contain both hydrophobic groups (their "tails") and hydrophilic
Liquid Tension Experiment 2 whole band. For this song Petrucci used a seven-string guitar. A riff heard at 4:15 is very similar to the song "Race with Devil on Spanish Highway" by guitarist Al Di Meola, whom Petrucci has cited as an influence. A live version of "Acid Rain" later appeared on Dream Theater's 2001 album "Live Scenes from New York". In this version the bass part is played by John Myung of Dream Theater on a six-string bass. Liquid Tension Experiment 2 Liquid Tension Experiment 2 is the second and final studio album by instrumental rock/progressive metal supergroup Liquid Tension Experiment, released on