وحدة قياس المصدر الضوئي

27 يناير 2013

وحدة قياس المصدر الضوئي

الشمعة أو القنديلة ورمزها (قند) هي الوحدة الدولية لقياس شدة الإنارة (شدة الإضاءة) (مقدار الطاقة المبعوثة من مصدر ضوئي في اتجاه معين من الأمواج الكهرطيسية بمجال معين بحيث تستطيع العين البشرية رؤيته).

معلومات علمية، ثقافية

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