Can you explain the results of Muon G-2 experiment?​

As the muons circulate in the Muon g-2 magnet, they also interact with a quantum foam of subatomic particles popping in and out of existence. Interactions with these short-lived particles affect the value of the g-factor, causing the muons' precession to speed up very slightly.

https://www.bnl.gov 

explanation:

v=uf/(u-f)

= 5.-10/(5+10) convex lens has negative focal length