What is light made up of?

Light is made up of photons, which are tiny, massless particles that carry energy and are part of the electromagnetic field. These photons are the quanta of electromagnetic radiation and can exhibit both wave-like and particle-like properties, a phenomenon known as wave-particle duality123. The energy of a photon depends on its frequency, with higher frequency photons having more energy and lower frequency photons having less energy23. Light, in its broader sense, includes not just visible light but also other forms of electromagnetic radiation such as radio waves, microwaves, infrared, ultraviolet, X-rays, and gamma rays15.