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摄影技术是19世纪在法国发明的。
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摄影技术是19世纪在法国发明的。
A.正确
B.错误
正确答案：正确
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数码摄影技术
世纪
时间：2022-03-07 20:16:46
上一篇：
摄影是用1片透镜把物体成像到像面上。
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图像传感器在几个平方毫米的面积内有几亿感光像素。
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有一个图像传感器的像素是5微米x5微米大小的正方形，一共有1200x1080像素，则该图像传感器是（）
2.
某相机拥有1300万像素的图像传感器，则其一个像素的大小是（）
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和数码摄影技术直接相关的诺贝尔奖是关于（）
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现在的相机中CCD或CMOS每个像素的大小是（）
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7.
When dopant with valence electrons less than those in the host semiconductor is introduced, the resulting doped system is n-type semiconductor.
8.
Generally speaking in an organic material, the average energy of a hole is approximately equal to the energy of HOMO electron
9.
Organic material system can be conductor, semiconductor, insulator, even superconductor.
10.
Both producing external photoelectric effect and photoluminescence need light irradiation.And the light energy is much higher in the latter case.
热门答案
1.
To evaluate the conductivity of a material, the only micro factor is carrier mobility.
2.
When we say that anthracene is a photoconductor, it means that the conductivity of this material is higher at irradiation with energy larger than its bandgap, compared to dark current.
3.
Wannier exciton is generally found in inorganic semiconductors.
4.
Frenkel exciton has the smallest radius.
5.
Dexter energy transfer is a resonance energy transfer by dipole interaction between the donor molecule and the acceptor molecule.
6.
Under optical excitation only singlet exciton exists.
7.
Compared to photoluminescence from dilute solution of a pure organic material, the photoluminescence from the solid state of this pure material decreases dramatically with very large redshift.This is due to exciplex formation.
8.
Dimer is formed by two same molecules
9.
Excimer is formed by two different molecules
10.
Electric field generally assists the dissociation of exciplex.