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Then all the charm Is broken—all that phantom-world so fair Vanishes, and a thousand circlets spread, And each mis-shape the other. Stay awhile, Poor youth! who scarcely dar'st lift up thine eyes— The stream will soon renew its smoothness, soon The visions will return! And lo! he stays, And soon the fragments dim of lovely forms Come trembling back, unite, and now once more The pool becomes a mirror.
An electron can possibly jump an obstacle, due to quantum jitter.
Overall, the total weight of the ball of lead would, slowly but surely, change.
According to this article, it's the working standard copies of it that are getting lighter, and the logical explanation for that is every time they are put on a scale they can lose some atoms:
originally posted by: swanne
Did you guys see the news? They have to come up with a new way to define the Kilogram! Yes sir. The official 1 kilogram weight, used to act as an international reference, is becoming heavier.
the last time they did inspect the real kilogram, they found it is roughly five parts in 100 million heavier than all the working standards, which have been leaving behind a few atoms of metal every time they are put on scales.
A prominent model was introduced by Piero Caldirola in 1980. In Caldirola's model, one chronon corresponds to about 6.27×10−24 seconds for an electron. This is much longer than the Planck time, which is only about 5.39×10−44 seconds.