The de Broglie wave equation is an equation that describes the wave nature of matter. It states that matter can act as waves much like light and radiation, which also behave as waves and particles. The equation allows the calculation of the wavelength of any moving object, and it helps us understand the idea of matter having a wavelength. Therefore, every moving particle, whether it is microscopic or macroscopic, will have a wavelength. The equation is expressed as λ = h/mv, where λ is the wavelength, h is Plancks constant, m is the mass of the particle, and v is its velocity. The de Broglie equation is commonly used to define the wave properties of matter, and it basically describes the wave nature of the electron. The wave nature of matter can be detected or is visible in cases of macroscopic objects.