Particle-antiparticle pairs are coming into existence all the time in the space around (and inside!) us. According to the Heisenberg uncertainty principle, the more massive the particles, the:
A)shorter the time that they can exist.
B)less precisely we know their position.
C)longer the time that they can exist.
D)more precisely we know their position.

Question

Quizplus · Accepted Answer

The Heisenberg uncertainty principle states that there is a fundamental limit to how precisely we can know both the position and momentum (or energy) of a particle. This limit is proportional to Planck's constant, which means that for more massive particles, the uncertainty in momentum (or energy) is relatively larger. As a consequence, the uncertainty in time that a particle can exist (which is related to its energy) is relatively smaller for more massive particles. Therefore, particle-antiparticle pairs with larger masses can only exist for shorter periods of time before they annihilate each other.

Particle-Antiparticle Pairs Are Coming into Existence All the Time in the Space