4838
This shows that the displacement varies as the square root of the time ( not linearly ) , which explains why previous experimental results concerning the velocity of Brownian particles gave nonsensical results .
 person: Brownian
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Brownian