User:Kunananya/sandbox

Human error on using stopwatch

 * Even though stopwatch is created to be more accurate, human still make an error in every time they use stopwatch. Normally, human will take about 180 - 200 ms or about 1.8 - 2.0 second to detect and response the visual stimulus . Therefore, most of the calculation error are happened because of this reason. To get more accurate result, most of the researchers use error propagation equation in order to reduce error on every experiment

Unit

 * In most of the science experiment, researchers will normally use SI or International System of Unit on any of their experiment. For unit of time that we observe on the stopwatch, generally we will use minute and second.

Photos
 * Digital stopwatch (1)
 * Propagation error formula (2)