Only an unexpected power outage brings home to us that without power, man’s cities would practically shut down. Most of the electricity on which we depend comes indirectly from the earth’s most reliable power source ​ — the sun.
आपले जीवन जिच्यावर इतके अवलंबून आहे त्या विद्युतशक्‍तीचा सर्वात मोठा आणि भरवशाचा स्रोत म्हणजे सूर्य.