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 best world records. Tallest dog ever. Gentle Giant: Zeus the great Dane (here with owner Kevin Doorlag and his son Nick) was afraid of the measuring tape. The lankiest canine in recorded history was Zeus, a great dane that measured 1.12 metres (44in) tall until his death last year.