ਤਾਪ ਬਲਬ: ਰੀਵਿਜ਼ਨਾਂ ਵਿਚ ਫ਼ਰਕ

==ਹਵਾਲੇ==

<ref>{{cite web |url=http://berkeley.academia.edu/OzzieZehner/papers/911577/Promises_and_Limitations_of_Light_Emitting_Diodes |title=Promises and Limitations of Light Emitting Diodes |author=Ozzie Zehner |date=2012 |accessdate=20 May 2012}}</ref>