Young's double slit experiments, which represent the mystery of quantum mechanics, have been described by the optic wave theory, the electromagnetic wave (EM wave) theory and pilot wave theory. Recently, the coexistence of the particle nature and the wave distribution of light in double slit experiments has been confirmed. In this article we utilize the photon chamber to detect the traces of the light beam in the double slit experiments, namely to visualize the particle nature of the light

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... The existence of the light tracks indicates the particle nature of the light beam in the wave experiments. Furthermore, the two sides of the chamber are covered by copper foil for shielding the EM wave. If the light were the EM waves, then the interference pattern would be disturbed. The experiments show that light behave as particle moving through the photon chamber. The double slit + photon chamber experiments challenge the optic wave theory, EM wave theory, but support the pilot wave theory at far field. The photon chamber is very inexpensive and may be used to study the nature of the light.