for uncertainity principle questions says that the calculated value of the momentum of an object is with accuracy of 5e-8 of the actual value. how do i get uncertainity value for the momentum (deltap)?

Question

for uncertainity principle questions says that the  calculated value of the momentum of an object is with accuracy of 5e-8 of the actual value. how do i get uncertainity value for the momentum (deltap)?

kainui · Answer

Well, you'd know based on what instrument with which you took the measurement. Every instrument has only so much precision. When you're baking for instance, you might need a cup of milk. Your measuring cup isn't exactly a cup, and you had to fill that cup, there's just some inherent uncertainty there.