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Date: 25-3-2017
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Date: 27-4-2017
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Date: 27-4-2017
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Positron Radiation
Positively charged electrons are called positrons. Except for the positive charge, they are identical to beta-minus particles and interact with matter in a similar manner. Positrons are very short-lived, however, and quickly are annihilated by interaction with a negatively charged electron, producing two gammas with a combined energy (calculated below) equal to the rest mass of the positive and negative electrons.
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4 أسباب تجعلك تضيف الزنجبيل إلى طعامك.. تعرف عليها
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أكبر محطة للطاقة الكهرومائية في بريطانيا تستعد للانطلاق
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مركز الكفيل يباشر بتنفيذ الأعمال الطباعية الخاصّة بحفل تخرّج طلبة الجامعات العراقية
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