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.
The 10 Smallest Dog Breeds. 1  The Chihuahua: This choice is no surprise, but Milly, a Chihuahua from Puerto Rico, outdid all others of her breed by weighing in at only 7 ounces (full grown) this year. 2  Chihuahuas usually weigh around 4 to 6 pounds on average.