Heat energy is not a property of electromagnetic waves because heat energy refers specifically to the kinetic energy associated with the random motion of particles within a substance. It is related to the temperature of a material and the collective motion of its constituent particles.
Electromagnetic waves, on the other hand, are a form of energy transfer through oscillating electric and magnetic fields. They do not possess the kinetic energy of particles themselves, but rather carry energy in the form of oscillating electric and magnetic fields. This energy is not directly related to the temperature or thermal properties of a substance.
While electromagnetic waves can interact with matter and transfer energy to it, the energy transferred is not in the form of heat energy but rather in the form of electromagnetic radiation. This energy transfer can lead to an increase in the internal energy of the material, which may manifest as an increase in temperature and the generation of heat, but the heat energy itself is not an inherent property of the electromagnetic wave.
To summarize, heat energy is a property associated with the kinetic energy of particles within a substance, while electromagnetic waves represent a form of energy transfer through oscillating electric and magnetic fields, unrelated to the thermal energy of a material.