Final answer:
A massless bundle carrying a quantum of energy is known as a photon, demonstrating wave-particle duality and having infinite transmission range due to its lack of mass.
Step-by-step explanation:
A massless bundle that carries a quantum of energy is called a photon. These photons are integral to the quantum model of light and are described by Einstein's theory. They demonstrate the wave-particle duality, meaning they exhibit properties of both waves and particles. Photons are associated with the electromagnetic force and, unlike particles with mass that have a limited range of influence, photons can transmit this force over infinite distances because they are massless. Max Planck's Quantum Hypothesis gives us the understanding that energy is quantized and that these quantized packets or bundles of energy are what we term photons.