Question

Julia is holding a basket of apples that weighs 5 pounds. sammy keeps adding more apples to julia's basket and asks her to tell him when she notices that the basket is heavier. julia notices a difference when the basket's weight reaches 6 pounds. now julia is holding a basket of apples weighing 10 pounds. according to weber's law, how much additional weight in apples must be added for julia to notice a difference?

Answer 1

2 pounds need to be added for Julia to notice any additional weight. The Weber fraction notes that there is a linear relationship between the proportion of the amount added and the just-noticeable difference to any sort of stimulus. In this way, it is easier to notice a change in a small stimulus than it is for a larger one.