At the age of 80, she's 'riding a/the wave of' renewed interest in her work. [=she's experiencing a time when many people are interested in her work again]
The traffic cop 'waved' cars 'through'. [=waved in a way that told drivers to continue driving through a particular area]
The new school has triggered a 'wave' of optimism [=has made many people feel optimistic] about the public school system.
(..) Yeah,sit down. Now close your eyes. - Why? - Just do it. Okay. Now try to increase your alpha wave activity. What? ! It's a biofeedback technique. It's relaxation through brain wave manipulation. I read a paper about it in (..)2007 TvShow: The Big Bang Theory Title: The Fuzzy Boots Corollary Season: 1 Episode 3