pressurized helmet
11Diving bell — A diving bell is a rigid chamber used to transport divers to depth in the ocean. The most common types are the wet bell and the closed bell. The wet bell is a cable suspended chamber, open at the bottom like a moon pool structure, that is lowered …
12Pickelhaube — The Pickelhaube (plural Pickelhauben ; from the German Pickel = point or pickaxe (modern German: pimple ), and Haube = bonnet , a general word for headgear) was a spiked helmet worn in the 19th and 20th centuries by German military, firefighters …
13Navy Mark IV — Gordon Cooper in Mercury suit The Navy Mark IV (or the Mercury spacesuit ) high altitude pressure suit was a full body pressure suit originally developed by the B.F. Goodrich Company and the U.S. Navy for wear in high altitude fighter aircraft… …
14Scuba diving — Not to be confused with Self contained breathing apparatus, which describes breathing sets used out of water. Scuba diver Scuba diving ( SCUBA originally being an acronym for self contained underwater breathing apparatus, now widely considered a… …
15Sokol space suit — The Sokol space suit (Russian: Cокол, Falcon ) is a type of Russian space suit, worn by anyone who flies on the Soyuz spacecraft. It was introduced in 1973 and is still used as of 2008. The Sokol is described by its makers as a rescue suit… …
16MythBusters (2009 season) — Country of origin Australia United States No. of episodes 23 (includes 3 specials) Broadcast Original channel …
17List of Ben 10 aliens — This is the list of all aliens of the Omnitrix and Ultimatrix showed in the Ben 10 universe Contents 1 Aliens introduced in Ben 10 1.1 Heatblast 1.2 Wildmutt 1.3 Diamondhead …
18Oxygen — This article is about the chemical element and its most stable form, O2 or dioxygen. For other forms of this element, see Allotropes of oxygen. For other uses, see Oxygen (disambiguation). nitrogen ← oxygen → fluorine ↑ O ↓ …
19Alien (Alien franchise) — infobox fictional creature name = Alien caption = A human spawned alien warrior as it appeared in Alien vs. Predator . classification = Alien lifeform first = Alien last = created by = Dan O Bannon Ronald Shusett designed by = H. R. Giger… …
20Radiosurgery — This article is about the medical procedure. For the album by American rock band New Found Glory, see Radiosurgery (album). Radiosurgery Intervention CLINAC: a model of steerable linear accelerator commonly used in radiosurgery …
