How does darkness travel with light?

#1
Secular Sanity Offline
You can make a black that absorbs 99.9923% of light by painting the inside of a box with Musou Black and putting a hole on the top of the box, a light trap if you will. When light passes through a prism, it undergoes refraction, causing the apparent position of objects to shift, i.e., displacement. If the hole absorbs 99.9923% of light, when viewed through a prism, would it also be displaced with the rest of the scene behind the prism or would everything in the scene be shifted away from the black hole? IOW, how does darkness (the absence of light) travel with light?


https://www.youtube-nocookie.com/embed/JoLEIiza9Bc

ChatGPT

ChatGPT>Interesting question! When light passes through a prism, it undergoes refraction, causing different wavelengths of light to bend at different angles, which creates the spectrum of colors. However, the absence of light (darkness) does not refract like light does because it is not a physical phenomenon itself; rather, it's the absence of photons.

In the scenario you described, where the hole absorbs 99.9923% of light, what remains is still subject to refraction by the prism. The darkness created by the absorbed light would not refract because there are no photons to undergo the refraction process. So, when viewed through the prism, the remaining scene would still be shifted according to the laws of refraction, while the dark area created by the hole would not be affected by the prism's optical effects.

In summary, darkness (the absence of light) does not travel with light through refraction. It remains stationary while the light is refracted.

Me>But the entire scene is displaced when viewing it through a prism, including the black hole, why?

ChatGPT>Ah, I see what you're getting at. Let's clarify.

When you view a scene through a prism, the entire scene appears to shift because different wavelengths of light are refracted by different amounts, causing the image to spread out into its spectral components. This dispersion effect leads to the apparent displacement of objects in the scene.

In the case of a black hole (the hole that absorbs 99.9923% of light), the absence of light in that area means there are no photons to refract. However, the objects around the black hole still emit or reflect light, and that light is refracted by the prism. So, the apparent displacement of the scene includes both the objects emitting or reflecting light and the absence of light (the black hole).

Thus, while the black hole itself doesn't emit or reflect light to be refracted by the prism, its presence (or absence of light) still contributes to the overall perception of the scene's displacement due to the dispersion of light from the surrounding objects.

Me>How does the darkness travel with the light?

ChatGPT>The darkness, or absence of light, doesn't "travel" with the light in the traditional sense. Darkness is not a physical entity like light; it's simply the absence of photons.

When you observe a scene through a prism, the light from the scene is refracted, causing the image to spread out into its spectral components. The absence of light, such as in the black hole you described, doesn't refract because there are no photons present to undergo refraction. However, the surrounding objects that emit or reflect light contribute to the overall perception of the scene's displacement due to the dispersion of their light by the prism.

So, in essence, darkness doesn't travel with the light through refraction. It's the presence or absence of light in different parts of the scene that contributes to the overall perception of displacement when viewed through a prism.

Me>But according to the conventional theory, it shouldn't be displaced, right?

ChatGPT>According to conventional optical theory, darkness, or the absence of light, isn't subject to the same optical phenomena as light. In the context of refraction through a prism, darkness doesn't refract because there are no photons present to undergo the bending of light rays.

However, the scenario you presented involves a black hole absorbing a significant portion of the light, leaving only a small percentage of light to be refracted by the prism. In such a scenario, while the absence of light itself doesn't refract, the surrounding scene that emits or reflects light will still undergo refraction as it passes through the prism.

So, while darkness itself doesn't experience displacement through refraction, its presence or absence can still influence the overall perception of displacement in the scene when viewed through a prism.

Me>How does that happen?

ChatGPT>The perception of displacement in the scene when viewed through a prism is primarily due to the dispersion of light into its spectral components.

When light from a scene passes through a prism, different wavelengths of light are refracted by different amounts, causing the colors to spread out into a spectrum. This dispersion effect leads to the apparent displacement of objects in the scene, as each wavelength of light is bent by a slightly different angle.

Now, let's consider the scenario with the black hole absorbing a significant portion of the light. While the absence of light in the black hole itself doesn't refract, the surrounding objects that emit or reflect light still undergo refraction as they pass through the prism. The dispersion of the remaining light from these objects contributes to the overall perception of displacement in the scene.

In essence, even though darkness itself doesn't experience displacement through refraction, the dispersion of light from the surrounding objects still creates the perception of displacement when viewed through a prism.

Me>It seems like the object on one side should overlap the black hole, if it’s not subjected to refraction or displacement.

ChatGPT>You're correct to point out that if the black hole itself isn't subject to refraction or displacement, there might be a visual overlap between the objects on either side of it, especially when viewed through a prism.

In the scenario you've described, where the black hole absorbs a significant portion of the light, the surrounding objects that emit or reflect light would still undergo refraction and displacement as they pass through the prism. This means that the objects on either side of the black hole may appear displaced relative to each other due to the prism's optical effects.

However, the black hole itself, being an absence of light, wouldn't contribute to this displacement. So, you're correct that there might be a visual effect where objects on one side of the black hole appear to overlap or extend into the area of darkness, especially when viewed through a prism. This could create an interesting visual contrast and illusion within the scene.

Me>But it doesn't. The spectrum of colors overlaps the black, like with Goethe's experiments, but the objects and the dark hole are displaced together.

ChatGPT>I see what you mean. In that case, if the entire scene, including both the objects and the dark hole, appears to be displaced together when viewed through a prism, it suggests that there may be an overall shift or distortion in the perception of the scene, rather than a distinct separation between the objects and the absence of light (the black hole).

This phenomenon could be due to the complex interaction of light and perception, which can sometimes result in unexpected visual effects. While conventional optical theory might predict that the absence of light (the black hole) wouldn't undergo displacement through refraction, empirical observations, such as the ones you described with Goethe's experiments, suggest otherwise.

In cases where the entire scene, including the absence of light, appears to be displaced together, it indicates that the optical effects of the prism are affecting the perception of the scene as a whole, rather than distinguishing between the objects and the absence of light.

This highlights the intricacies of light and perception and how they can sometimes lead to unexpected and fascinating phenomena, even in the realm of conventional optical theory.

Me>There should be an explanation though, right?

ChatGPT>Certainly! While the exact mechanism behind the apparent displacement of both the objects and the absence of light (the black hole) when viewed through a prism may require further investigation, there are a few possible explanations that could be explored:

1. Interaction of light and perception: The interaction between light and human perception is highly complex and can sometimes lead to unexpected visual effects. It's possible that the brain interprets the entire scene, including both the objects and the absence of light, as a cohesive whole when viewed through a prism, resulting in the perception of displacement of the entire scene together.

2. Psychological factors: Our perception of visual stimuli can be influenced by various psychological factors, such as Gestalt principles (which describe how we perceive patterns and wholes) and cognitive biases. These factors could play a role in how we interpret the displacement of the scene when viewed through a prism.

3. Optical illusions: Certain optical illusions can create the perception of movement or displacement even when the physical objects themselves are not actually moving. The apparent displacement of the entire scene, including the absence of light (the black hole), could be a result of such optical illusions.

4. Complex light interactions: The interaction of light with the materials in the scene, including the prism and the objects themselves, could lead to complex light paths and interactions that result in the perception of displacement of the entire scene. This could involve phenomena such as multiple reflections, scattering, and diffraction.

Further experimental studies and theoretical investigations into the specific conditions under which this phenomenon occurs could provide more insights into the underlying explanation.

Any ideas?
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#2
Zinjanthropos Offline
SS.. I doubt if I could answer the question but i wondered something similar during recent eclipse. Where I observed eclipse from couldn’t be anymore centre of the path the shadow travelled. I’m pretty sure the atmosphere refracts light plus the moon shadow was about as dark an image I’ve ever seen. Could that be similar to the hole in the dark box you’re talking about?

Asked myself as shadow’s bite of the Sun got larger, am I observing the darkness immediately, as in faster than c? If I’m in the area of least refraction, directly in line, do I notice darkness before someone viewing from a different angle even though it’s a beam of light that hits atmosphere at same time? Only thing I could think of is no two observers see the same light (or I definitely can’t be in two places at once …lol)
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#3
Secular Sanity Offline
That’s a good question. And yeah, darkness travels at c but shadows can travel faster than c. Blocking particles (light) doesn’t transfer information faster than c though. Although... it does seem like you could communicate using shadows that move faster than the speed of light.

Maybe in this case the darkness is taking up space and blocking the light just like a shadow. So, even though there’s no light being refracted, the area with the black hole is still taking up geometric space. That’s the only thing that I can think of, but that’s not how conventional optical theories explain it. I don’t know the answer. Your guess is as good as mine.

BTW, glad you’re feeling better and keeping it at bay. Long live the Zinman! Smile
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#4
C C Offline
(May 15, 2024 09:17 PM)Secular Sanity Wrote: [...] IOW, how does darkness (the absence of light) travel with light?

It is the detectable data (information mediated by light in this instance) that is conveying the absence (of data or dark hole) as a disruption in its own makeup or constitution.

That relationship is maintained even in a funhouse mirror, where the absence (as a purely specious thing) also gets deformed thanks to its outline being framed and made possible by the presence of the detectable data.

Accordingly, one would reflexively expect the absence to still be conveyed and be figuratively arranging and positioning itself in association with the detectable data in the bent displacements and separations of refraction (sharing in those modifications). Even though the latter is a radically different variety of "distortion" than what the funhouse mirror outputs.
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#5
Zinjanthropos Offline
(May 16, 2024 02:40 PM)Secular Sanity Wrote: That’s a good question. And yeah, darkness travels at c but shadows can travel faster than c. Blocking particles (light) doesn’t transfer information faster than c though. Although... it does seem like you could communicate using shadows that move faster than the speed of light.

Maybe in this case the darkness is taking up space and blocking the light just like a shadow. So, even though there’s no light being refracted, the area with the black hole is still taking up geometric space. That’s the only thing that I can think of, but that’s not how conventional optical theories explain it. I don’t know the answer. Your guess is as good as mine.

BTW, glad you’re feeling better and keeping it at bay. Long live the Zinman! Smile

Thanks for kind words SS. Hoping I’ve turned the corner. Can’t say enough about my oncologist, she’s even given me her personal phone number in case I have a problem. I know there’s staff shortages in hospitals but maybe she doesn’t trust the people who are supposedly working for her. Maybe my case is defying conventional logic, I don’t know and don’t care as long as things get better..lol. Enuf of that…..

Is there a difference between shadow and dark? Is dark just the extreme end of the shadow spectrum?

When the eclipse hit totality it was extremely dark from my vantage point. If it wasn’t for street lights coming on and other artificial light producers I had the feeling it would really be ‘can’t see hands in front of my face dark’. Despite the ring that appears around the Sun during one of these episodes I’m not sure if the light from it made any difference. I say this because after a few minutes when the moon moved across the sun’s face, all it took was the tiniest sliver of sunlight to lighten up the area again.

As the darkness appearing on the sun’s face increases during an eclipse wouldn’t the Shadow still take 1.5 secs to reach Earth, would it not appear until last photon that escaped being blocked made its way to observer?

I remember one of the moon astronauts commenting that while on the moon he ventured into the shadow of a large rock and it was so dark that he became blindly disoriented. Can a shadow be so dark that even nearby reflected light can’t penetrate it?
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#6
Secular Sanity Offline
(May 16, 2024 03:24 PM)Zinjanthropos Wrote: Thanks for kind words SS. Hoping I’ve turned the corner. Can’t say enough about my oncologist, she’s even given me her personal phone number in case I have a problem. I know there’s staff shortages in hospitals but maybe she doesn’t trust the people who are supposedly working for her. Maybe my case is defying conventional logic, I don’t know and don’t care as long as things get better..lol. Enuf of that…..

Is there a difference between shadow and dark? Is dark just the extreme end of the shadow spectrum?

When the eclipse hit totality it was extremely dark from my vantage point. If it wasn’t for street lights coming on and other artificial light producers I had the feeling it would really be ‘can’t see hands in front of my face dark’. Despite the ring that appears around the Sun during one of these episodes I’m not sure if the light from it made any difference. I say this because after a few minutes when the moon moved across the sun’s face, all it took was the tiniest sliver of sunlight to lighten up the area again.

As the darkness appearing on the sun’s face increases during an eclipse wouldn’t the Shadow still take 1.5 secs to reach Earth, would it not appear until last photon that escaped being blocked made its way to observer?

I remember one of the moon astronauts commenting that while on the moon he ventured into the shadow of a large rock and it was so dark that he became blindly disoriented. Can a shadow be so dark that even nearby reflected light can’t penetrate it?

I was thinking about this video. Seems like a third distant party could make a shadow move between two parties faster than the speed of light. Even though a shadow is (nothing) it could be a message (word, shape, signal), or some sort. The definition of information in this sense must be something (matter).


https://www.youtube-nocookie.com/embed/JTvcpdfGUtQ

Good day to you, Zinman!
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#7
Zinjanthropos Offline
Quote: Even though a shadow is (nothing) it could be a message (word, shape, signal), or some sort. The definition of information in this sense must be something (matter).

The guy in the video wriggling his fingers and casting a shadow …… isn’t he sending a message and information?
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#8
Secular Sanity Offline
(May 16, 2024 03:02 PM)C C Wrote:
(May 15, 2024 09:17 PM)Secular Sanity Wrote: [...] IOW, how does darkness (the absence of light) travel with light?

It is the detectable data (information mediated by light in this instance) that is conveying the absence (of data or dark hole) as a disruption in its own makeup or constitution.

That relationship is maintained even in a funhouse mirror, where the absence (as a purely specious thing) also gets deformed thanks to its outline being framed and made possible by the presence of the detectable data.

Accordingly, one would reflexively expect the absence to still be conveyed and be figuratively arranging and positioning itself in association with the detectable data in the bent displacements and separations of refraction (sharing in those modifications). Even though the latter is a radically different variety of "distortion" than what the funhouse mirror outputs.

Yeah, that sounds like a good explanation. I'll have to try it and see. 

Thanks, C C!

(May 17, 2024 04:07 AM)Zinjanthropos Wrote:
Quote:  Even though a shadow is (nothing) it could be a message (word, shape, signal), or some sort. The definition of information in this sense must be something (matter).

The guy in the video wriggling his fingers and casting a shadow …… isn’t he sending a message and information?

No physical substance can exceed the speed of light, but shadows aren’t a thing. Shadows are the absence of light (nothing). But yeah, it seems like shadows could be used to transmit information. Confused
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#9
Magical Realist Offline
I find it fascinating that darkness can transmit information like light can. Does it travel in waves or rays as light does? When does the absence of one thing become the presence of another thing? Way to think outside the box SS!

“Light is the left hand of darkness
and darkness the right hand of light.
Two are one, life and death, lying
together like lovers in kemmer,
like hands joined together,
like the end and the way.”
― Ursula K. Le Guin, The Left Hand of Darkness


[Image: vqmHJdn.jpeg]
[Image: vqmHJdn.jpeg]

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