Electron-positron annihilation

with No Comments

Electron-positron annihilation Every particle has its antiparticle, which is an exact copy of itself with opposite charge. Sometimes antiparticles have special names, like the positron, the anti-particle of the electron. Sometimes those names are boring: the muon has the anti-muon, the neutrino has the anti-neutrino and so on. Because particles and … Read More

Electron Handedness

with 1 Comment

  Electron handedness Would the mirror image of our universe behave in the same way as our universe? The short answer is “no”: particles that are “reflected” have slightly different properties than their counterparts, which means that our reflected universe … Read More

Forces Do not Exist

with 6 Comments

  Forces do not exist Most people first hear about forces in high school, with Newton. But the reality is that forces do not exist. Instead, what we have is something similar to particle physics tennis: two particles exchange another one … Read More

Why Did the Electron Cross the Road?

with 2 Comments

  One of the most surprising properties of elementary particles is that they can be in several places at the same time, at least until they are observed. This happens because particles behave also as waves and, just like those, … Read More

Guess the Quark

with No Comments

Ordinary matter is made of atoms with a massive nucleus surrounded by a cloud of electrons. The nucleus is, in turn, made of two types of particles: protons and neutrons. These are much heavier than electrons, so much so that we … Read More