To be Eurocentric historians implies that such historians favor historical perspectives and evidence that support the superiority, supremacy, and domination of European thoughts, values, and cultures over non-Europeans histories. This position is often influenced by Bias, Prejudice, or Partiality.
Hence, Traditionally, Eurocentric historians have focused on the works of European philosophers instead of African philosophers because of their BIASEDNESS
Steinmetz' experiments on power losses in the magnetic materials used in electrical machinery led to his first important work, the law of hysteresis. This law deals with the power loss that occurs in all electrical devices when magnetic action is converted to unusable heat.