实验装置: B 加速电极 1 suppose electrons K多 电 are waves 发射电 MN单晶 流 子阴级 计 De broglie wavelength of electron waves would be given by h 12.3° Experi 4…( g mental value QemU gIven by From Bragg's law 2d sin =kn ki p=500. h 2dsin =k (10 This is emu excellent agreement 9=51°suppose De Broglie wavelength of electron waves would be given by (9) 12.3 2 0   = = A em U U h  From Bragg’s law 2d sin  = k (10) 2 2 sin 0  em U h d  = k k =123.  φ=51o 实验装置： G Ni单晶 电 流 U 计 I B K 发射电 子阴级 加 速 电 极 electrons are waves. Experi￾mental value is given by φ=50o . This is excellent agreement.   M