According to the principles of quantum mechanics, every object, regardless of its size or mass, exhibits wave-particle duality. This means that even macroscopic objects, such as humans, have associated wavelengths. However, for everyday objects like humans, the wavelengths associated with their motion are incredibly small and, therefore, not readily observable or measurable.
The de Broglie wavelength (λ) of an object is given by the equation:
λ = h / p
where h is the Planck's constant and p is the momentum of the object. The de Broglie wavelength is inversely proportional to the momentum of the object. Since humans have relatively large masses and momenta compared to subatomic particles, their associated wavelengths are incredibly small.
To give you an idea of the scale involved, let's consider a typical human with a mass of about 70 kilograms and moving at a walking speed of around 1 meter per second. If we calculate the de Broglie wavelength using these values, we find that it is on the order of 10^(-34) meters. This is an extremely tiny value, far beyond the resolution of our current technology to measure directly.
In practical terms, the wavelength associated with a human is far too small to have any observable effects at the macroscopic level. Therefore, we don't typically discuss or observe human wavelengths in everyday situations. Instead, the wave-like behavior of macroscopic objects, including humans, is usually masked by their large masses and the statistical nature of their interactions on a macroscopic scale.