Hey everyone, First off, hopefully I am in the right topic. Now i just had a lab last week, where we had to calculate acceleration and talk about motion using data we got from a ticker timer. One of the requirements of the report is to find and talk about uncertainty of the ticker timer. The ticker timer is a 60 Hz one so it *should* tick 60 times a second. I was thinking first that there might be some fluctuations of the power, but i realized that there may be some machines a lot more sensitive to fluctuation of the current, and the teacher told me i was right, so it should therfore be something regarding the fact that it doesn't tick 60 times a second, but why? If i ddin't use proper scientific terms would you also kindly correct me? Thanks!