I am currently studying about the dual nature of radiation and matter. I have come across how the radiation energy is quantified by saying that it is built up of discrete units. Though I fairly have a grasp on this issue, my textbook has a statement that is not clear. It says,
Observation on photoelectric effect imply that in the event of matter-light interaction, absorption of energy takes place in discrete units of hv. This is not quite the same as saying that light consists of particles, each of energy hv.
What does it mean? Aren't the two sentences contrasting thems? If not, please let me know.
Thank you in advance.
