# Does Light Have Mass?

## Does Light Have Mass?

Light consists of photons. The question is, do photons have a mass?

I think that photons have mass, just like neutrinos have mass.

Scientists thought neutrinos were massless because they don’t interact with matter.

Neutrinos can travel straight through the earth without slowing down.

In 2012 neutrinos were shown to have mass even though they can’t measure the mass.

Photons are similar, and because they are never at rest, they are considered massless.

That’s because we aren’t able to weigh them. Imagine riding on a beam of light, trying to get the mass.

Einstein and scientists in 1905 agreed that light was massless.

Einstein created a mathematical description of acceleration to explain gravity. And he seemed to find a way to explain why photons are attracted to gravity (mass).

Minkowski came up with the idea that the presence of mass curves space.

Thus, Spacetime became an actual fabric of space that changes shape when a mass displaces space.

The magic of math created curved space out of massless space to allow massless photons to follow curved space.

If you or I suggested something like that today, we would be laughed out of the building.

Now we have Einstein's theory accepted and taught in schools. It's almost impossible to change accepted science, especially if Einstein had anything to do with the theory.

Scientists say light is massless because it's never at rest, and the definition of mass means that the mass must be measurable.

They are hiding behind the definition of mass to make their equations simpler and more accessible to disregard the mass in their equations.

But not only that, if light has mass, it would falsify Einstein's general relativity, based on the fact that massless light is attracted to curved space.

But what force moves a massless particle into curved space? Don’t you need mass to fall down a well? It sounds like gravity to me.

## Why Light Has Mass

Einstein's equivalence principle of mass and energy, E=mc2, means that energy and mass are interchangeable.

There's no need to add the term rest mass because mass in motion or not is still the same mass when neglecting kinetic energy.

Einstein's photoelectric effect proves that light is a particle.

A particle can't have a magnetic and electric field without mass because energy only works with objects having mass.

We can see and feel light, but we can't see massless space.

Neutrinos move at relativistic speed, and in 2012 they found they have mass.

Why would light be the only particle in the universe without mass?

A photon is a part of an electron's energy/mass, and electrons create all photons.

Photons are attracted to the gravity of a black hole and to any large mass because they have mass.

Consider that the wave nature of light is the propulsion system that an electron gives it, and the particle nature of light has mass that allows the wave nature of photons.

This energy will always travel at the speed that an electron gave it, and that speed is the speed limit of the universe.

A search on Wikipedia shows that the photon is a physical particle, and it carries the electromagnetic field from the electron.

The amount of mass is in the range of less than 7 x 10^-17 eV. That’s a tiny amount, but it has mass.

These facts show that light has mass and energy.

I want to ask if anyone can offer proof that light is massless. If the only evidence is that Einstein said so, I have an issue with that.

If you say that a photon must be massless to travel at light speed, how does a neutrino travel at the speed of light?

Where Does Light Come From

Electrons create all the light that we see. The most common light is sunlight from our star, where the light is created in nuclear fusion reactions inside the sun.

Light doesn’t exist on its own. Electrons must make it. All the light in the universe is/was created by electrons.

## How Does An Electron Create Light?

At the universe's beginning, photon radiation entered and changed into electrons.

Experiments have finally been able to create electrons from photons

The big aha moment is that the energy field of an electron is like a photon.

This energy field can stretch outwards if a force acts upon it. Then immediately, the field collapses and releases a photon.

Photons move at the speed of light because that is the speed of the rotating field around electrons.

The photon resembles a miniature electron because it carries the electromagnetic field from the electron.

This field is the wave aspect of light. The photon came from the electron’s energy field and mass; thus, a photon is a dual wave-particle.

However, all particles have wave characteristics.

## The Supercooled Rubidium Experiment.

Photons are never at rest. They are always moving.

That makes it almost impossible to measure the rest mass of a photon. But such an experiment has been done.

Researchers pumped rubidium atoms into a vacuum tube and chilled them almost to absolute zero. Then they fired weak laser pulses to send photons into the cloud of cold atoms.

While passing through the cloud of rubidium, the photons slowed down. When two photons were fired simultaneously, they exited together, like a molecule.

That’s not all. When 3 photons stuck together, resembling an atom, they measured a small mass.

Another experiment stopped light for one entire minute. This is proof that light has mass!

A “massless” wave-particle stopped, combined with another wave, and then it had mass.  Remember, there is no momentum or kinetic energy present.

### Key Takeaways

1. Electrons create all the light in the universe

2. Electrons create the electromagnetic force

3. The electron has an orbital consisting of a photon

4. When this field absorbs energy, it releases it as photons

5. The electron gives the photon its speed and properties

6. Photons have mass and energy

7. Photons have a passive gravitational mass that is attracted to gravity

8. Einstein’s fabric of spacetime is false

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### About the Author Erik Lovin

Erik has a BSc degree and is a retired professional photographer who is now a published author of many books. His passion is understanding how life and the universe work. He is currently blogging about the science of the Big Bang and science in your life. Erik is helping his tribe with questions about the universe. His goal is to help find a theory of everything (TOE). In order to do that, he is trying to prove light has mass and that the fabric of spacetime is a false theory. We are welcoming questions and answers that you might have about the universe.