Like those of us in the living realm, many ghosts seek attention. Yet, for obvious reasons, their ways of attracting our attention are pretty limited. Unfortunately, there isn’t a version of WhatsApp for ghosts (not yet, anyway).

It’s always wise to eliminate common reasons like these before you decide that a ghost is messing with your lights. Still, if you’ve observed a ghost flicking your lights on, it’s probably not a faulty bulb!

In addition to my2cts answer showing how circularly polarized light is detected, I would like to add the reason for this phenomenon.

Linear polarization

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EM radiation can be polarized in the next way. In a polarization plate suitable for a certain frequency range, 50% of the radiation is directed in the polarization direction and 50% is absorbed/reflected. There is therefore an interaction with the electric field component of the radiation and the slits.

Unpolarizedlight

Hey, I'm Sam Ashford! I'm a ghost-hunting expert, writer and founder of SpiritShack. My mission is to help people like yourself learn about spirituality and how to hunt ghosts!

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Now it turns out that my colleague is not particularly well versed in math, so my line of reasoning does not fly a single nanometer. Besides, it would be advantageous to me if I can also get someone else on my side, specially on the management floor, and math is certainly not the way.

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With two circular and one linear polarisers you can do it. Use an unpolarised light source. First show that half the light passes the two circular polarisers when aligned and none passes when they are anti-aligned. So there is polarisation. Then replace the second filter by the linear filter and show its orientation does not matter. So the polarisation is not linear.

by TW Cronin · 2011 · Cited by 147 — Circular polarization refers to the phenomenon whereby the e-vector of light rotates in a plane, where typically the surface normal indicates the direction of ...

Sometimes, this might just mean the light goes on and off once. This is kind of like a ghost knocking once on a door to grab your attention.

I've read that there exist chiral molecules, which modify circularly polarized light, but do not affect linear polarized light. Some sugars, and also some oil-derivatives. But I could not find an explanation of the effect, much less an intuitive one.

And there is the phenomenon that the radiation receives a twist when it emerges from an optical structure. We then observe this as circularly polarized light.

Whatever the reason, it’s usually best to rule out the most obvious causes first, such as faulty bulbs. Then, you should start observing other unusual occurrences and make the most of ghost-hunting equipment to get definitive proof that something spooky is afoot.

Edit My colleague knows the effect of a QWP very well, but, he still thinks that circularly polarized light is a mental construction. More or less like some statistical blah-blah from the newspaper, that one is advised not to trust, unless one really knows what is going on. When I speak of Stokes parameters, he tends to mistrust the thing. I personally find math arguments very helpful to stay on safe ground, but it is also very difficult to communicate that feeling of safety to others. The guy is neither stupid nor obtuse, by any stretch of those concepts. In a way, I find it sane that he asks for arguments.

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Polarization vector

There is no scientific proof that ghosts can turn lights on and off. In fact, there’s no scientific proof that ghosts exist. However, we have plenty of evidence from paranormal experts that this is a common phenomenon in the ghostly realm.

My line of reasoning is that transversal waves are solutions of the wave equation. As this equation is linear, a linear combination of solutions is also a solution. And in that linear combination, I'm free to use complex coefficients. Hence, circularly polarized light is perfectly possible as an inherent property of light.

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Polarized lightand optical systems pdf

If you live in a house haunted by a ghost, you’re probably aware that ghosts are trapped spirits with unfinished earthly business. Often, this unfinished business is linked to a specific location or past event.

Naturally, there are plenty of fairly boring reasons for lights turning on by themselves (which we’ll cover shortly). So, how do you tell if a ghost is turning your lights on? Let’s take a look.

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Polarization

“Electromagnetic waves are composed of electric and magnetic fields that oscillate in space. In the context of ghost hunting, it is hypothesised that spirits might disrupt or manipulate these fields when they are present.”

At work, a senior colleague thinks that circularly polarized light does not exist. My problem is that we both work on a project involving polarized light. In some occasions, I would like to point out some artifacts that I can identify in the circularly polarized component (because I am computing the Stokes parameter that describes exactly that). My colleague insists to dismiss those arguments of mine on the basis that circularly polarized light does not exist. Instead, he argues, I should measure linear polarized states, and reason from there.

In optical crystals, it is the periodic electric and magnetic fields of the crystal structure that polarize and diffract light. Among these, there are crystals that have two optical axes (birefringence, polarization planes, ...)

Circular polarized light is photons in helicity eigenstates. I think the left vs. right is a bit confusing, but that is just convention. A photon in the spin state:

As you can see, ghosts can certainly interfere with lights and turn them on and off. Their reasons for doing so are wide and varied. They might be doing it accidentally or they could be trying to tell you something.

Sorry I agree with your colleague. Circular pol light is typically a mix of 2 linear polarizations created by certain crystals/materials, the circular thing is a mathematical construct where we can add 2 vectors and get a phase .... phase can be interpreted in angular/radial dimensions.

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There’s also a theory that ghosts manipulate lights to recreate the environment of past events. For instance, if a ghost died in a car accident, a flickering light bulb could recreate the flashing headlights of an oncoming car.

The best way to tell if a ghost is turning your lights on is to carry out some paranormal investigations. This could involve setting up a video camera or keeping a log of when and where the light activity occurs.

Polarization oflight

If you notice the lights turning on and off, the ghost might be doing this to help them achieve their goals in some way. It could be that you or someone else in the building is linked to the ghost’s plan.

Many paranormal experts believe that ghosts consist of energy rather than physical matter and that they exist on a different energy plane than our own.

One way is to acknowledge the ghost’s presence and ask it to stop calmly and politely. Or, you could attempt to cleanse your home by burning sage and opening all of the windows.

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If your lights have been turning on for no apparent reason, you may be wondering whether this is the work of a ghost. So, can ghosts turn the lights on? The simple answer is yes, they can. The more interesting questions are how, why, and how can you tell? These are the questions that we…

Circular polarization

https://en.wikipedia.org/wiki/Circular_polarization Note how in Wikipedia the first 3 references are from the 1800s! Circular light is a long running convention in physics.

In waveguides it is more complex. It is assumed that both the magnetic and the electric field components can be aligned and that they can be aligned at an angle other than 90°.

If your lights have been turning on for no apparent reason, you may be wondering whether this is the work of a ghost. So, can ghosts turn the lights on? The simple answer is yes, they can. The more interesting questions are how, why, and how can you tell?

Remember, just because your light seems to be turning on randomly, it doesn’t necessarily mean you have a paranormal guest. There are many other reasons why this could be happening:

Elliptical polarization

Have spooky sights and sounds got you up at night? Wondering what to do about an unwanted otherworldly visitor? Well, before you hire a paranormal investigator, you might want to try a humble pinch of salt. That's right—salt can repel ghosts. In fact, it's been used for this purpose for centuries. Still not sure? Let…

So, if a ghost passes by a light fixture or switch, it could disrupt the electromagnetic field unintentionally, causing the light to turn on. You may also notice that your lights flicker in a distinct pattern.

As part of this theory, it’s suggested that ghosts emit electromagnetic waves that can disrupt the electrical devices we use.

We know that ghosts can turn lights on, but why? If you live in a haunted house, then it may be obvious that malevolent ghosts are trying to disturb you. However, there are often more complicated reasons why a ghost might be behaving in this way.

There are also some amazing ghost-hunting apps like DeadBox and EMF Analytics Pro that you can use to track the presence of ghosts in your home.

So, when ghosts want to communicate with us, it can lead to all kinds of strange occurrences like lights switching on and off.

These are the questions that we answer in this helpful guide. We also explore the other common (more mundane) reasons this could be happening.

Or, you may notice that the lights go on and off in a pattern. This is often the ghost’s attempt to communicate via a coded message. Unfortunately, unless they’re using Morse code, it’s very hard to tell what they’re trying to say.

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