Description

This app measures and displays a graph ofBarometric Pressure (hPa) vs. Time (s) that can be exported toGoogle Drive or in an e-mail as a .csv (comma separated values)attachment.

This app can be particularly effective when measuring changes inatmospheric pressure due to weather, estimating changes in altitude(on amusement park rides, elevators, car travel across mountains),monitoring air cabin pressure changes during an airplane ride,estimating the strength of a vacuum chamber, or even observingchanges in air pressure due to photosynthesis and plant respirationwithin a closed system.

Visit the following link for a number of formal and informalreferences for how users are using Physics Toolbox Apps in theircourses, research, and work:https://sites.google.com/site/rebeccavieyraaef/home/citations

Permissions Explained:

android.permission.WAKE_LOCK: Used to keep the device awake onlywhen recording barometric data to csv. (Example: After pushing therecord button, the app will continue to collect data even whenplaced in a pocket during a roller coaster ride, and will turn offonly after data recording has been stopped.)

android.permission.WRITE_EXTERNAL_STORAGE: A csv file is createdand modified on the phone's internal memory.

If you have any questions, comments, or would like to seemodifications/updates, please email me at [email protected]