Sound amplification by stimulated emission of radiation phenomenon, known as the Larsen effect, is the result of a positive feedback. In general, every oscillator consists of three main parts. These are the power source or pump, the amplifier and the positive feedback leading to the output. The corresponding parts in a SASER device are the excitation or pumping mechanism, the active (amplifying) medium, and the feedback leading to acoustic radiation. Pumping can be performed, for instance, with an alternating electric field or with some mechanical vibrations of resonators. The active medium should be a material in which sound amplification can be induced. An example of a feedback
AACTA Award for Best Direction in a Television Light Entertainment or Reality Series AACTA introduced craft awards for television programs in 2013, the Best Direction in Television award was split into two: Best Direction in a Drama or Comedy and Best Direction in a Television Light Entertainment or Reality Series. AACTA Award for Best Direction in a Television Light Entertainment or Reality Series The AACTA Award for Best Direction in a Television Light Entertainment or Reality Series is an accolade given by the Australian Academy of Cinema and Television Arts (AACTA), a non-profit organisation whose aim is to "identify, award, promote and celebrate Australia's greatest achievements in film and television." The award is