vertically

If strung vertically, along the length of the fake seal’s body, the lights don’t do enough to disrupt the silhouette visible from below.

The aircraft blend technology from airplanes and helicopters and are capable of taking off and landing vertically.

"This precise behaviour is obviously subject to our parametrization of these clouds as a vertically uniform grey opacity source," the authors write.

It can be launched from the ground by a catapult or by it can be fitted with rotors so it can launch vertically.

“I got bit by the bug,” Clingingsmith said, looking to the sky as a smoke column rose vertically a few miles away from Running Springs.