Shadow

A shadow is a space where light from a light source is blocked by an opaque object. It occupies all of the three-dimensional volume behind an object with light in front of it. The cross section of a shadow is a two-dimensional silhouette, or reverse projection of the object blocking the light.

Point and non-point light sources

A point source of light casts only a simple shadow, called an "umbra". For a non-point or "extended" source of light, the shadow is divided into the umbra, penumbra and antumbra. The wider the light source, the more blurred the shadow becomes. If two penumbras overlap, the shadows appear to attract and merge. This is known as the Shadow Blister Effect.

The outlines of the shadow zones can be found by tracing the rays of light emitted by the outermost regions of the extended light source. The umbra region does not receive any direct light from any part of the light source, and is the darkest. A viewer located in the umbra region cannot directly see any part of the light source.

Frank Sinatra

Francis Albert "Frank" Sinatra (/sᵻˈnɑːtrə/; December 12, 1915 – May 14, 1998) was an American singer, actor, producer, and director, who was one of the most popular and influential musical artists of the 20th century. Sinatra's music has been considered timeless by many. He is one of the best-selling music artists of all time, having sold more than 150 million records worldwide. Born in Hoboken, New Jersey, to Italian immigrants, he began his musical career in the swing era with Harry James and Tommy Dorsey. He found success as a solo artist after being signed by Columbia Records in 1943, becoming the idol of the "bobby soxers". He released his first album, The Voice of Frank Sinatra, in 1946. Sinatra's professional career had stalled by the early 1950s, and he turned to Las Vegas, where he became one of its best known performers as part of the Rat Pack. His career was reborn in 1953 with the success of From Here to Eternity and his subsequent Academy Award for Best Supporting Actor. He signed with Capitol Records and released several critically lauded albums, including In the Wee Small Hours (1955), Songs for Swingin' Lovers! (1956), Come Fly with Me (1958), Only the Lonely (1958) and Nice 'n' Easy (1960).

Billy Connolly

William "Billy" Connolly, 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 alongside friend Gerry Rafferty until 1971 and subsequently as a soloist. In the early 1970s, he made the transition from folk-singer with a comedic persona to fully-fledged comedian. Best known to many as a stand up comedian, he appears in several lists of the greatest comedians ever.

Connolly is also an actor and has appeared in such films as Water (1985); Indecent Proposal (1993); Pocahontas (1995); Muppet Treasure Island (1996); Mrs. Brown (1997); The Boondock Saints (1999); The Man Who Sued God (2001); 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); Open Season 2 (2008); Brave (2012); Quartet (2012) and The Hobbit: The Battle of the Five Armies (2014). Connolly reprised his role as Noah "Il Duce" MacManus in The Boondock Saints II: All Saints Day (2009).