The first sentence uses 'method' in the singular, yet they use different methods, and also doesn't make much of a point- how complex are they? In the second sentence, you talk about physical and chemical, which, I presume, mixes the two methods- movie film is chemical, but is TV? 'Little lone'- this should be 'let alone'. Again, you end the sentence with something vague: 'a long and sorted tale'. I don't know what you mean by 'sorted' here. Also, you only give one simialrity and one difference, and the difference is just a restatement of the question, not an expansion on it, and you didn't distinguish the radio waves from the photons reacting with chemicals sufficiently to make the difference clear.