Field Emission

Photo-Electric Emission

Electron Emission

Thermionic Emission

$K_{\max}=h\nu+\phi_o$

$E=K_{\max}+\phi_o$

$\phi_o=K_{\max}+h\nu$

$K_{\max}=h\left(\nu_o-\nu\right)$

Wilhelm Hallwachs

Philipp Lenard

Heinrich Hertz

Albert Einstein

"As in intensity increases, kinetic energy of the electron increase s"

"Kinetic energy of the electron increases, as frequency increases "

"As intensity increases, Photocurrent also increases"

"No. of photoelectrons increases, as intensity increases "

 $p=\frac{h\nu}{\lambda}$  

 $p=\frac{h\lambda}{c}$  

 $\lambda=\frac{h}{p}$  

 $\lambda=\frac{hc}{p}$  

$\Delta x\cdot\Delta p\approx\frac{h}{2\pi}$

$\Delta x\cdot\Delta p=h$

$\Delta x\cdot\Delta v\approx\frac{h}{2\pi}$

$\Delta x\cdot\Delta v\ge\frac{h}{2\pi}$

Lenard and Hallwach

Davisson and Germer

Michelson and Morley

Cavendish