حسين عبد الحافظ الزناتي

استاذ - رئيس قسم الفيزياء

كلية العلوم

العنوان: قسم الفيزياء، كلية العلوم بسوهاج

9

إعجاب
2018-09-05 14:36:08 | 0 | special course
Estimate the quantum efficiency of the photodiode at 800 nm and 400 nm. How could the quantum efficiency at the shorter wavelength be improved ? Compare the absorption edges of direct and indirect gap semiconductors. Your answer should focus on the functional dependence of the absorption coefficient on the photon energy, and the change of the absorption with temperature

2018-09-05 13:51:52 | 0 | PHYSICAL OPTICS, 203 pyhs
A sinusoidal wave of frequency _f _is traveling along a stretched string. The string is brought to rest, and a second traveling wave of frequency 2_f _is established on the string. The wave speed of the second wave is (a) twice that of the first wave (b) half that of the first wave (c) the same as that of the ...

2018-09-04 16:54:39 | 0 | Optical Electronics, 442 phys
Compare between the spherical aberration and the chromatic aberration and write the relation of the disk confusion radius in each case? Draw a schematic diagram of a scanning electron microscope SEM and explain its operating principles?

2018-09-04 16:50:33 | 0 | Electronic Optics, 346 phys
* Compare between the biological microscope and metallurgical microscope (draw the Schematic diagrams of each) * * Proof that the angular speed and the period of the circular path of the charged particle that moves perpendicular to the uniform magnetic field do not depend on the linear speed of the particle or on the radius of the orbit?

A charged particle moves with velocity v in a magnetic field B. The magnetic force on the particle is a maximum when v is (a) parallel to B, (b) perpendicular to B, (c) zero. An electron moves in the plane of this paper toward the top of the page. A magnetic field is also in the plane of the page ...

يوجد في هذا الملف بعض الواجبات، يجب اجابتها وتسليمها وفقا لما سوف يعلن عنه في المحاضرات اثناء الفصل الدراسي A charged particle moves with velocity v in a magnetic field B. The magnetic force on the particle is a maximum when v is (a) parallel to B, (b) perpendicular to B, (c) zero. An electron moves in the plane of ...

• «
• 1
• »