| 1 | How to describe the wave-particle duality of light? | |
| 2 | For long time, people do not understand why there is wave-particle duality of light? | |
| 3 | The understanding of electromagnetic radiation underwent particle theory, wave theory , wave- particle theory. | |
| 4 | So this validates de Broglie and it also validates the whole concept of wave-particle duality. | |
| 5 | Author suggests that it is necessary to design experiments to measure the phase velocity of de Broglie wave and to study the wave-particle duality deeply. |