Physics of Blackness: Beyond the Middle Passage Epistemology

What does it mean to be Black? If Blackness is not biological in origin but socially and discursively constructed, does the meaning of Blackness change over time and space? In Physics of Blackness: Beyond the Middle Passage Epistemology, Michelle M. Wright argues that although we often explicitly define Blackness as a what, it in fact always operates as a when and a where.