states that for each type of sensory judgment that we make, the measured just noticeable difference (jnd) is a constant proportion of the standard stimulus value used to measure it.

Weber's Law

Explanation:

Ernst Weber, a 19th century psychologist proposed that the size of the difference threshold ( ΔI ) appears to be related to initial stimulus ( I ) magnitude.  

Weber's Law is related to the just noticeable difference or the difference threshold which is the minimum difference in stimulation that a person can detect half of the time.

The formula: ΔI/I = k ( where k signifies the constant proportion)

In order to really perceive a difference, the stimuli must differ by a constant proportion not amount.

first of all, it's important to say that the book we shall not be moved, written by joan dash, is about the first strike of women in the united states in the year 1909. the best historical detail to clarify the reader's undertanding is the phrase "general strike". this strike involved women working at a garment factory who decided to protest   long working hours, low wages and brutal conditions. this strike became known as "the new york shirtwaist strike" or "the uprising of the 20,000". the strike mostly involved jewish women who did not speak english or who had a basic knowledge of the english language. finally, the strike went on from november 1909 until february 1910.