11-14-2016, 10:19 PM
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#7
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مؤسسة الشبكة
بيانات اضافيه [
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رقم العضوية : 2
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تاريخ التسجيل : Jun 2013
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أخر زيارة : 01-14-2024 (07:13 PM)
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المشاركات :
724 [
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التقييم : 10
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الدولهـ
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الجنس ~
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لوني المفضل : Darkred
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Modern Physics
69- The particle behavior of light is proven by the photoelectric effect.
70- A photon is a particle of light {wave packet}.
71- Large objects have very short wavelengths when moving and thus can not be observed behaving as a wave. (DeBroglie Waves)
72-All electromagnetic waves originate from accelerating charged particles.
73- The frequency of a light wave determines its energy (E = hf).
74- The lowest energy state of a atom is called the ground state.
75- Increasing light frequency increases the kinetic energy of the emitted photo-electrons.
76- As the threshold frequency increase for a photo-cell (photo emissive material) the work function also increases.
77- Increasing light intensity increases the number of emitted photo-electrons but not their KE.
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