My Blog Site : http://rivr.sulekha.com/dr-p-e-sarangadhara-kartha_876525?t=blogs Subjects of interest: Physics, Mathematics, Electronics, Ultrasound, Astrophysics, Astrobiology, etc., Indian Philosophy, Vedanta, Spirituality, etc., Ayurveda, Bharatiya Puranas & Itihasas, Indian and English literature, Marketing, Market Research, Manufacturing technology, History - Indian, World, US, British.