• The stepfather - child
relationship is substantially more challenging than the biological - father - child
relationship: the
relationship is not as close; stepfathers are less affectionate and more coercive with stepchildren; and stepchildren tend to be less
warm and affectionate with stepfathers — even in long - term
fairly successful stepfamilies (for review see Radhakrishna et al, 2001).
Even though the
relationship of pressure, temperature, and density of hydrogen fusion — its equation of state — is
fairly well understood, no one has ever confirmed the equation of state of
warm dense matter.»