Measure indoor room temperature using your iPhone or iPad and headset (required). Ondo® is an experimental acoustic thermometer implemented using an iPhone (or iPad) and headset. Acoustic thermometers utilise the principle that the speed of sound in air changes with temperature; by measuring the speed of sound it is possible to calculate air temperature. How it works? Ondo® transmits a high frequency sound from the headset earpiece. This sound is received by the microphone positioned a short, fixed distance from the earpiece. The time taken for the sound to travel between the earpiece and
Ondo - Thermometer is a free educational mobile app By SCB Associates Ltd.It helps students practice the following standards .
Developer URL: https://www.ondo.app/
Software Version: 1.1
Release Date: 2019-02-04T15:06:14Z