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.
Whether this is a measure of pure intelligence or simply biddability, here are some of the small dog breeds considered to be the smartest. #1 â Poodle. While the Standard Poodle is one of the smartest large dog breeds, the Miniature and Toy Poodle both follow closely behind. The Miniature Poodle was originally a truffle hunting dog before it became a companion. Now both smaller versions excel at a variety of dog sports and are easily trained.