 time step
    values are represented by <i>p</i>. For more information on this process,
    see the book reference at the bottom of this page.
</p>
<p>
    The temperature at the inner boundary of Material A is determined by the
    following equation:

    $$ T_m^{p+1} = 2*Fo_A*(T_{m+1}^p + Bi_A *T_{inner}) + (1 - 2*Fo_A - 2*Bi_A * Fo_A)*T_m^p$$

	Temperatures for nodes internal to Material A are determined by:
	$$ T_m^{p+1} = Fo_A *(T_{m+1}^p + T_{m-1}^p) + (1-2*Fo_A)*T_m^p$$

    In the transition from 