Editing Poly(methyl methacrylate) (section)

=== Glass substitute ===
[[file:KelpAquarium.jpg|thumb|left|{{convert|10|m|ft|adj=on|sp=us}} deep [[Monterey Bay Aquarium]] tank has acrylic windows up to {{convert|33|cm|in|sp=us}} thick to withstand the [[fluid statics#Hydrostatic pressure|water pressure]].]]

* PMMA is commonly used for constructing residential and commercial [[aquarium]]s. Designers started building large aquariums when poly(methyl methacrylate) could be used. It is less often used in other building types due to incidents such as the [[Summerland disaster]].
* PMMA is used for viewing ports and even complete pressure hulls of submersibles, such as the [[Alicia (submarine)|''Alicia'' submarine]]'s viewing sphere and the window of the [[bathyscaphe Trieste]].
* PMMA is used in the lenses of exterior lights of automobiles.<ref>{{cite book |author=Kutz, Myer |title=Handbook of Materials Selection |url=https://archive.org/details/handbookmaterial00kutz |url-access=limited |publisher=John Wiley & Sons |year=2002 |page=[https://archive.org/details/handbookmaterial00kutz/page/n351 341] |isbn=978-0-471-35924-1}}</ref>
* Spectator protection in [[ice hockey]] rinks is made from PMMA.
* Historically, PMMA was an important improvement in the design of aircraft windows, making possible such designs as the bombardier's transparent nose compartment in the [[Boeing B-17 Flying Fortress]]. Modern aircraft transparencies often use stretched acrylic plies.
* Police vehicles for [[riot control]] often have the regular glass replaced with PMMA to protect the occupants from thrown objects.
* PMMA is an important material in the making of certain lighthouse lenses.<ref>[http://www.terrypepper.com/lights/closeups/illumination/index.htm Terry Pepper, Seeing the Light, Illumination] {{webarchive|url=https://web.archive.org/web/20090123055321/http://www.terrypepper.com/lights/closeups/illumination/index.htm |date=2009-01-23}}. Terrypepper.com. Retrieved 2012-05-09.</ref>
* PMMA was used for the roofing of the compound in the [[Olympiapark, Munich|Olympic Park]] for the [[1972 Summer Olympics]] in Munich. It enabled a light and translucent construction of the structure.<ref>{{cite book |editor=Deplazes, Andrea |title=Constructing Architecture – Materials Processes Structures, A Handbook |publisher=Birkhäuser |year=2013 |isbn=978-3038214526}}</ref>
* PMMA (under the brand name "Lucite") was used for the ceiling of the [[Reliant Astrodome|Houston Astrodome]].