Simple equation directs creation of clean-energy catalysts

New guidelines laid down by Nebraska and Chinese researchers could steer the design of less costly, more efficient catalysts geared toward revving up the production of hydrogen as a renewable fuel.

JILA's superradiant laser may one day boost atomic clocks

JILA physicists have demonstrated a novel laser design based on synchronized emissions of light from the same type of atoms used in advanced atomic clocks. The laser could be stable enough to improve atomic clock performance ...

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Performance

A performance, in performing arts, generally comprises an event in which one group of people (the performer or performers) behave in a particular way for another group of people (the audience). Sometimes the dividing line between performer and the audience may become blurred, as in the example of "participatory theatre" where audience members might get involved in the production. Singing choral music, and performing in a ballet are examples. Usually the performers participate in rehearsals beforehand. Afterwards audience members often clap, indicating appreciation. However, sometimes this rule is reversed. In Japan, the greatest compliment is complete silence.[citation needed]

Performances, for example in theatre, can take place daily, or at some other regular interval. Performances can take place at someone's house, in a subway, or even at a dollar store. Talent, on the other hand, is subjective.

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