The objective of this work is to study the Klein-Nishina (KN) cross section during the collision of free electrons and atoms (H-atom and Pt-atom) near the cathode of Proton Exchange Membrane Fuel Cell (PEMFCs). The developed KN cross section was computed using MATLAB shows KN cross section decrease with an increase with the temperature. The maximum KN cross section recorded for single scattering is about -70.2m2 and -66m2 in natural log terms during the collision of free electrons with H-atom and Pt-atom, respectively. The maximum KN cross section recorded for 1ml flow of hydrogen is about -26.6m2 and -22.25m2 in natural log term during the collision of free electrons with H-atom and Pt-atom, respectively.
The objective of this work is to study the photonic force and impulses on a leaf, intensity after passing through the leaf, and molecular cross-section chlorophyll of the leaf. To study we use analytical and computational methods. The observation shows that photonic force and impulse on leaves of crops decrease with wavelength, intensity also decreases with the thickness of leaves and molecular cross-section of Chlorophyll a type is lesser than Chlorophyll b type. A study of this parameter shows the huge impact on the photosynthesis phenomena of plants which further disturbed the growth of plants in different parts of their body. With the study, it is also found that the spectrum of the visible range is suitable for the photosynthesis process because the energy gap of Chlorophyll a type and Chlorophyll b type lie in the visible spectrum region. In addition, the higher energy spectrum damages the photosynthesis process by damaging Chlorophyll a and Chlorophyll b. Hence, this study shows how the force, impulse, intensity, and molecular cross section affect the photosynthesis process and diet of plants which is related to leaves.
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