预备知识:波的物理参数 phase 2 wavelength phase amplitude 2 amplItu 屮(x,yz,t)=W0cOS(kX+ky+k2z-t+中) ψ(r,t)=ψcos(k·r-ot+φo) ψ(r,t)=ψer-otp
预备知识：波的物理参数 ψ(x, y, z, t) = ψ0cos(kxx + kyy + kzz –ωt + ϕ0 ) ψ(r, t) = ψ0cos(kr – ωt + ϕ0 ) ψ(r, t) = ψ0e i(kr – ωt + ϕ0)
预备知识:傅立叶变换( Fourier transformation) 6 10 0 说片就
预备知识：傅立叶变换（Fourier transformation)
预备知识:傅立叶变换( Fourier transformation) →F(k)=f(r)e"ar→ f(r)= F(ke dk
F(k) = f (r) -¥ +¥ ò e ik•r dr f (r) = F(k) -¥ +¥ ò e -ik•r dk 预备知识：傅立叶变换（Fourier transformation)
THE ELECTROMAGNETIC SPECTRUM 面时10101021102101101010111010101 Size of This Perlod 心 wavelength Protein Water Molecule Common INFRARED ILTRAVIDLEI ARD X RAYS MICROWAVES CAM病 A RAYS Sources p上 +M Rad iht Bub Rattinsrtre All Cave TAIS Aado Mochine Demets Frequ (waves per 10103108109101010110121013101410151016101710181019100 Energy of one photon it)1091081071061051041031021011103102103104105105 Radio Microwave Infrared Visible[Ultraviolet[ X-ray Gamma Ray 10 1 10 10 10 10 1010 Wavelength in centimeters About the size of AV
X-Ray(germany, 1895, Wihelm Conrad roentgen) Wavelength M CNo-nnde a4画 Needle No lecu粪tm C来源:当电子突然减速或发生能级越迁 时产生高频电磁波 频率 3x1016Hz 波长:001nm~10nm 能量:>124eV X射线作用于原子中的电子,而非原子核
X-Ray (Germany, 1895, Wilhelm Conrad Roentgen) 来源：当电子突然减速或发生能级越迁 时产生高频电磁波 频率: > 3 x 1016 Hz 波长: 0.01 nm ~ 10 nm 能量: > 124 eV X射线作用于原子中的电子，而非原子核