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Date: 5-10-2020
1405
Date: 15-9-2020
1021
Date: 29-11-2020
1875
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Statistical Laws
In determining the statistical behavior of particles, we must consider the laws that the particles obey. There are three distribution laws determining the distribution of particles among available energy states.
One distribution law is the Maxwell-Boltzmann probability function. In this case, the panicles are considered to be distinguishable by being numbered, for example, from 1 to N. with no limit to the number of particles allowed in each energy state. The behavior of gas molecules in a container at Fairly low pressure is an example of this distribution.
A second distribution law is the Bose-Einstein function. The panicles in this case are indistinguishable and, again, there is no limit to the number of particles permitted in each quantum state. The behavior of photons, or black body radiation, is an example of this law.
The third distribution law is the Fermi-Dirac probability function. In this case, the particles are again indistinguishable, but now only one particle is permitted in each quantum state. Electrons in a crystal obey this law. In each case, the particles are assumed to be noninteracting.
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حمية العقل.. نظام صحي لإطالة شباب دماغك
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إيرباص تكشف عن نموذج تجريبي من نصف طائرة ونصف هليكوبتر
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شعبة مدارس الكفيل النسوية تطلق فعّاليات مخيم (بنات العقيدة) العشرين
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قسم التربية والتعليم يعقد اجتماعاً تحضيرياً لملاكاته استعداداً لانطلاق برنامجه التأهيلي
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متحف الكفيل يعقد أولى اجتماعاته التحضيرية لمؤتمره الدوليّ الخامس
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وفد قسم الشؤون الفكرية وسفير العراق في فرنسا يبحثان سبل تعزيز التعاون المشترك
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