Question

Why is the wave nature of matter not apparent in our daily observations?

Answer 1

Wave nature of matter is not Apparent in our daily observation.
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Here it is asking that why we can't see the wave nature of matter?
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Hence the nature of any wave is depend upon the wavelength,
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So if you want the answer of this question, then you have to go to the de- Broglie's relatio.
He has given the relation,

Lemda = h/(mv)

As we know the value of Planck's Constant (h) is become very small,

So if value of Planck's Constant(h) will be small then the value of wavelength (lemda) ,will also be small.

And because of this too shorter wavelength, We are unable to observe the wave nature of matter in our daily life.