This course is meant to initiate the students to three of the important themes in physics; The atomic physics section introduces the student to the study of the structure of the atom as an isolated system of electrons and a nucleus, its energy states and interactions with other particles and with electric and magnetic fields. The heat aspect is structured to be introduced as a form of internal energy associated with the random motion of the molecular constituents of matter or with radiation.  The optics is designed to initiate the student to that branch of physics which involves the behaviour and properties of light including its interactions with matter. It considers the generation, propagation and detection of electromagnetic radiation having wavelengths greater than x-rays and shorter than microwaves.