A Call to Rethink Electricity Measurement (IMAGE) DOE/Pacific Northwest National Laboratory Caption Air temperature is an example of an operational measurement. To get an accurate measurement, you must follow carefully defined steps. Credit Photo by Jarosław Kwoczała | Unsplash.com Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.