Sonication. Sonication is the act of applying sound energy to agitate particles in a sample, for various purposes. In the laboratory, it is usually applied using an ultrasonic bath or an ultrasonic probe, colloquially known as a sonicator.
Nostalgia Critic is the most popular video series created by Doug Walker, in which he plays the titular reviewer. The show is written by him and his brother Rob Walker. The series was initially launched on YouTube before moving to Blip TV in 2008.
Because the psychology of nostalgia is a relatively new field of research, there is no evidence to show whether particular generations are becoming more nostalgic. Dr Tim Wildschut, of the University of Southampton, stresses that nostalgia is a fundamental human emotion and not something that changes overnight.t matters, quite simply, because nostalgia makes us feel good. Heart sick. Once nostalgia was considered a sickness-the word derives from the Greek nostos (return) and algos (pain), suggesting suffering due to a desire to return to a place of origin.