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.
Giant breeds tend to have heartbreakingly short lives, while small dogs typically live longer. The oldest dog on record lived to be 29 years old! That was Bluey, an Australian Cattle Dog, who holds the Guinness title for longest canine life span, from 1910 to 1939.