What is an Arc ? | Arc in Circuit Breaker Before going through details of arc quenching or arc extinction technologies employed in circuit breaker we should know first what is arc actually. What is an Arc ?
Meet the World's Tallest and Shortest Dogs! Gibson and Boo Boo. These are the extremes: the world's tallest dog Gibson (7 ft / 2.1 m tall when standing on his hind legs) has met Boo Boo (4 in / 10 cm high) the world's smallest dog in Sacramento, California for Guinness World Records Day 2007.
Certified by the Guiness Book of World Records, the tallest dog living is Gibson, a Harlequin Great Dane (see more on Great Danes here), who measured 107 cm (42.2 in) tall on â¦August 31 2004 and is owned by Sandy Hall of Grass Valley, California, USA.