The waves by Heba Soffar · Published September 12, 2014 · Updated September 12, 2014 Waves are classified according to the direction of vibration of medium particles .
0 Qualitative analysis, Detection for Acidic radicals (anions) and Basic radicals (cations) November 13, 2018 by Heba Soffar · Published November 13, 2018 · Last modified August 31, 2019
0 What are the components of the soil? December 16, 2014 by Heba Soffar · Published December 16, 2014 · Last modified November 24, 2019
73 Uses of the concave mirror and the convex mirror in our daily life September 21, 2015 by Heba Soffar · Published September 21, 2015 · Last modified September 9, 2020
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