Opie may refer to:

Radio is the transmission of signals through free space by electromagnetic waves with frequencies significantly below visible light, in the radio frequency range, from about 3 kHz to 300 GHz. These waves are called radio waves. Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of space.

Information, such as sound, is carried by systematically changing (modulating) some property of the radiated waves, such as their amplitude, frequency, phase, or pulse width. When radio waves strike an electrical conductor, the oscillating fields induce an alternating current in the conductor. The information in the waves can be extracted and transformed back into its original form.

The etymology of "radio" or "radiotelegraphy" reveals that it was called "wireless telegraphy," which was shortened to "wireless" in Britain. The prefix radio- in the sense of wireless transmission, was first recorded in the word radioconductor, a description provided by the French physicist Édouard Branly in 1897. It is based on the verb to radiate (in Latin "radius" means "spoke of a wheel, beam of light, ray").

William "Billy" Connolly, Jr., CBE (born 24 November 1942) is a Scottish comedian, musician, presenter and actor. He is sometimes known, especially in his native Scotland, by the nickname 'The Big Yin' ('The Big One'). His first trade, in the early 1960s, was as a welder (specifically a boilermaker) in the Glasgow shipyards, but he gave it up towards the end of the decade to pursue a career as a folk singer in the Humblebums and subsequently as a soloist. In the early 1970s, he made the transition from folk-singer with a comedic persona to full-fledged comedian.

Connolly is also an actor, and has appeared in such films as Indecent Proposal (1993); Muppet Treasure Island (1996); Mrs. Brown (1997), for which he was nominated for a BAFTA; The Boondock Saints (1999); The Man Who Sued God (2001); Water (1985); The Last Samurai (2003); Timeline (2003); Lemony Snicket's A Series of Unfortunate Events (2004); Garfield: A Tail of Two Kitties (2006); Open Season (2006); The X-Files: I Want to Believe (2008); and Open Season 2 (2008). Connolly reprised his role as Noah "Il Duce" MacManus in The Boondock Saints II: All Saints Day. Connolly appears as the King of Lilliput in the 2010 remake of Gulliver′s Travels.