a)The photon energy of a CO2 laser is 0.117eV. Calculate the wavelength of the laser ( please show the equations and calculations steps). b) The graph below shows the absorption as a function of wavelength for some metals. Can/ would you use the CO2 laser to weld aluminium? Explain

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Radiation

Radiation can be described as the energy in the form of a particular matter or electromagnetic waves traveling in the air and can be in the form of light, sound, and heat. Radiation can be detected through special instruments like X-rays. The radiation from a cooler object is less intense as compared to the radiation from hot objects.