Existen partículas SIN MASA? Qué es un fotón?

The video tutorial explores the concept of massless particles, specifically photons, in particle physics. It explains what particles are, how they are detected, and the significance of being massless. The tutorial delves into the relationship between mass, energy, and kinetic energy, using special relativity to clarify these concepts. It highlights that photons, being massless, have only kinetic energy and must travel at the speed of light. The video concludes by emphasizing the beauty of the relationship between masslessness and the speed of light.

What is a particle according to the video?

• A small ball of striking color

• Anything that can be detected with a particle detector

• A concept invented to make physics easier

• A photon source like a star or a laser

In the context of special relativity, what are the two contributions to a particle's energy?

• Kinetic energy and potential energy

• Kinetic energy and rest energy

• Potential energy and rest energy

• Thermal energy and kinetic energy

What does it mean for a particle to have no mass?

• It travels slower than light

• It has no kinetic energy

• It has no rest energy

• It cannot be detected

Why must a photon travel at the speed of light?

• Because it is a small ball

• Because it has no rest energy

• Because it has mass

• Because it has rest energy

What is the relationship between massless particles and the speed of light?

• Massless particles have rest energy

• Massless particles have potential energy

• Massless particles travel at the speed of light

• Massless particles travel slower than light