Liquid Metal (Sirius XM) Guy were severed from the channel as part of XM Liquid Metal's signoff. The Hard Attack play list has also been changed, featuring acts that were once heard on the former XM channel Squizz. Mercury has been replaced by Beyond the Pit, which airs in the middle of the night, instead of its former evening drive time slot. As part of the Sirius XM update, Sirius 27 Hard Attack was renamed Liquid Metal (taking the name of the channel that was on XM channel 42). Original subscribers to Sirius and XM have been disappointed because the title change, and others
Liquid crystal needed. In 1966, Joel E. Goldmacher and Joseph A. Castellano, research chemists in Heilmeier group at RCA, discovered that mixtures made exclusively of nematic compounds that differed only in the number of carbon atoms in the terminal side chains could yield room-temperature nematic liquid crystals. A ternary mixture of Schiff base compounds resulted in a material that had a nematic range of 22–105 °C. Operation at room temperature enabled the first practical display device to be made. The team then proceeded to prepare numerous mixtures of nematic compounds many of which had much lower melting points. This technique of mixing