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.
Thought to be hitting his 29th birthday in January 2014, Minius is currently the oldest living dog on earth. A shelter mutt of unidentified origin, this old boy is closing in on the record, showing little sign of slowing down (although signs of age in dogs can crop up all at once).