0 How can the human ear differentiate between sounds? August 27, 2014 by Heba Soffar · Published August 27, 2014 · Last modified November 28, 2019
0 Laser rays properties, Spontaneous emission and stimulated emission April 24, 2018 by Heba Soffar · Published April 24, 2018 · Last modified September 3, 2019
0 The movement of the moon and the occurrence of the tide and the ebb phenomenon July 6, 2014 by Heba Soffar · Published July 6, 2014 · Last modified November 28, 2019
Recent Comments