I find that one of the interesting things about the uncertainty principle ΔxΔp≥h/2π can be made "visible" for the lay person by discussing the macrocosmos.

Suppose you have a car driving on the street and you are standing on the pavement with your new digital SLR camera. Now you can do two things with that camera:
1. you can take a pic with a very short exposure time, you can see the car clearly, and determine its location very well, however, you have no information about the speed of the car.
2. you can take a pic with a long exposure time, you will see a very blurred car, stretched over the picture, so you can determine the velocity of the car rather well, but any information about the exact location of the car is lost.

__________________

Any comments in glorious red are to be considered in ModeratorMode.


善數, 不用籌策 (shàn shù, bù yòng chóu cè)
He who is good at counting, uses no counting tools
“A good scientist has freed himself of concepts and keeps his mind open to what is”
道德經, 二十七 (dào dé jīng, 27)