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6.4: The Compton **Effect** - **Physics** LibreTexts

Nov 5, 2020 **...** The Compton **effect** is the term used **for** an unusual result observed when ...
Describe how experiments with X-rays confirm the particle **nature** of **radiation** ...
Here the **photon's energy** Ef is the same as that of **a light quantum** of ... The **wave**
**relation** that connects frequency f with wavelength λ and speed c ...

For more information, see 6.4: The Compton **Effect** - **Physics** LibreTexts

Given that

Energy flux of sunlight P\ =1.388*10^3W/m^2

Average wavelength \lambda = 550 nm = 550 * 10^{-9} m

Step 1: Find the energy of photon in the light beam.

Energy of proton E=h\upsilon\ =\ \frac{hc}{\lambda}

Where, h - Planck's constant (6.626*10^{-34}), speed of light c = 3*10^{8} m/s and \upsilon - frequency

E=\frac{6.626*10^{-34}\cdot3\cdot10^8}{550\cdot10^{-9}\ }

E=3.61\cdot10^{-19}\ J

Step 2: Determining the number of photons per second, on the average

Relation between power(energy flux) and energy of photon

P = nE

Number of photons per second n = \frac{P}{E}

n=\frac{1.388\cdot10^3}{3.62\cdot10^{-19}}

n=3.9\cdot10^{21\ } potons/sec

Hence, Number of photons per square meter o earth per second n=3.9\cdot10^{21\ } potons/sec