Abstract: A method of making a glass product includes: melting a batch of raw materials to form a glass melt in a melting tank; heating the batch and/or the glass melt using two or more electrodes, the electrodes including an electrode material and heating the batch and/or the glass melt includes operating the electrodes at a current frequency of at least 1,000 Hz and at most 5,000 Hz; withdrawing the glass melt from the melting tank; and forming the glass melt into the glass product.

Abstract: Due to its dopant structure, the radiant band of a III(A) - V(B) type luminescent diode, emitting light radiation in the plane of the PN-junction, possesses differences in delay time of .ltoreq. 10.sup.-10 seconds, which permit an extension to higher frequencies.The dopant structure is characterized by an n.sup.+ type basic material incorporating an impurity concentration of N.sub.D .gtoreq. 10.sup.18 cm.sup.-3, and by a graded acceptor dopant profile which within the radiant region has a gradient of .ltoreq. 10.sup.22 cm.sup.-4 and a gradient of .gtoreq. 10.sup.23 cm.sup.-4 in the vicinity of the p.sup.+ region. Thus the injection conditions in respect to the quantum efficiencies and to the frequency range are improved. The diode is fabricated by a diffusion process and/or a liquid epitaxial process, in which definite temperatures and time relations have to be satisfied.