A Radial engine was used on old bi-planes - many (round)cylinders around one shaft - Rotary engines have a triangle type piston - not round. Instead of going up & down ,they move in a somewhat triangle circle.
The largest tsunami on record strucky Lituya Bay in a  remote portion of Alaska in 1958. It was overâ¦ 1,700 feet tall. The  meteor impact associated with the extinction of the dinosaurs is  believed to have generated a tsunami 3,000 feet to 1 mile tall.
Hugo Vau could have smashed a world record amid claims he surfed one of the biggest waves ever seen at Nazare, Portugal. The wave â nicknamed âBig Mamaâ â was reported to be up to 35-metres-high, which, if confirmed, would beat current Guinness Book of Records holder Garrett McNamara, who tackled a 23-metre one at Praia do Norte in 2011.