Editing Barometer (section)

=== <span id="MEMS Barometers"></span>MEMS barometers ===
[[File:Galaxy Nexus smartphone.jpg|thumb|110px|The [[Galaxy Nexus]] has a built-in barometer]]
[[Microelectromechanical systems]] (or MEMS) barometers are extremely small devices between 1 and 100 micrometres in size (0.001 to 0.1&nbsp;mm). They are created via [[photolithography]] or [[photochemical machining]]. Typical applications include miniaturized weather stations, electronic barometers and altimeters.<ref>{{cite journal |journal =Sensors & Transducers E-Digest |volume=92 |issue=4 |year=2008 |title=MEMS Barometric Pressure Sensor|url=http://www.sensorsportal.com/HTML/DIGEST/may_08/MEMS_pressure_sensor.htm |access-date=13 June 2014}}</ref>

A barometer can also be found in smartphones such as the Samsung [[Galaxy Nexus]],<ref>[https://gizmodo.com/5851133/this-is-the-samsung-galaxy-nexus-googles-new-official-android-phone This Is the Samsung Galaxy Nexus, Google's New Official Android Phone] {{Webarchive|url=https://web.archive.org/web/20120810045436/http://gizmodo.com/5851133/this-is-the-samsung-galaxy-nexus-googles-new-official-android-phone |date=2012-08-10 }}. Gizmodo.com (2011-10-18). Retrieved on 2011-11-15.</ref> Samsung Galaxy S3-S6, Motorola Xoom, Apple [[iPhone 6]] and newer iPhones, and [[Timex Expedition WS4]] [[smartwatch]], based on [[Microelectromechanical systems|MEMS]] and [[Pressure sensor#Pressure-sensing technology|piezoresistive pressure-sensing]] technologies.<ref>{{cite news |last=Molen |first=Brad |url=https://www.engadget.com/2011/10/20/behind-the-glass-a-detailed-tour-inside-the-samsung-galaxy-nexu/ |title=Behind the glass: a detailed tour inside the Samsung Galaxy Nexus |work=[[Engadget]] |publisher=[[Engadget]] |date=2011-10-20 |url-status=live |archive-url=https://web.archive.org/web/20141205163527/http://www.engadget.com/2011/10/20/behind-the-glass-a-detailed-tour-inside-the-samsung-galaxy-nexu/ |archive-date=2014-12-05 |access-date=2015-06-23 |quote=Barometric pressure sensor: Bosch BMP180 }}</ref><ref>{{cite web|url=http://ae-bst.resource.bosch.com/media/downloads/pressure/bmp180/Flyer_BMP180_08_2013_web.pdf |title=BMP180: Digital, barometric pressure sensor |work=[[Robert Bosch GmbH|Bosch]] |access-date=2015-06-23 |url-status=dead |archive-url=https://web.archive.org/web/20150623102607/http://ae-bst.resource.bosch.com/media/downloads/pressure/bmp180/Flyer_BMP180_08_2013_web.pdf |archive-date=2015-06-23 }}</ref> Inclusion of barometers on smartphones was originally intended to provide a faster [[Global Positioning System|GPS]] lock.<ref>[https://www.engadget.com/2011/10/20/galaxy-nexus-barometer-explained-sam-champion-not-out-of-a-job/ Galaxy Nexus barometer explained, Sam Champion not out of a job]. Engadget (2011-10-20). Retrieved on 2011-12-03.</ref> However, [[Microsoft Research|third party researchers]] were unable to confirm additional GPS accuracy or lock speed due to barometric readings. The researchers suggest that the inclusion of barometers in smartphones may provide a solution for determining a user's elevation, but also suggest that several pitfalls must first be overcome.<ref>{{cite journal |title=Barometric Phone Sensors – More Hype Than Hope! |journal=ACM HotMobile |date=2014-02-26 |last1=Muralidharan |first1=Kartik |last2=Khan |first2=Azeem Javed |last3=Misra |first3=Archan |last4=Balan |first4=Rajesh Krishna |last5=Agarwal |first5=Sharad |page=2 |url=http://research.microsoft.com/apps/pubs/default.aspx?id=206442 |access-date=2015-06-23 }}</ref>