caption: a ruler showing time is one of the earliest things to be achieved
exif: {"Image DocumentName": "Review of our Results", "Image ImageDescription": "We decided to test the reaction time of male and female Year 9 students because we found it an interesting topic and thought it wouldn\u2019t be too complicated to test. Our method of testing was a valid method, because we controlled all the variables, and kept the test the same for every student we tested. However, the way we measured the reaction \u2018time\u2019 (using cm) was a little bit inaccurate because it wasn\u2019t a unit of time, rather a unit of distance. To fix this problem, instead of a ruler, we could have used an electronic timing system that would involve the person hitting a button when they heard a beep, or saw a light, signalling the start of the timer.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}