A continuation of the conversation started in 2015 with, "Am I real?"
RVK:
The use of laser light is fundamental to creating holograms. Laser light provides the coherence required for holography, with a consistent wavelength and phase relationship. By splitting a laser beam into two—one directed at the object and the other serving as a reference—interference patterns are formed on a photographic plate. These patterns, when developed, contain all the information needed to reconstruct the object. However, holography requires a highly stable setup, as interference patterns are extremely sensitive to vibrations. Advanced techniques like high-frequency pulsed lasers or vibration-free environments ensure the accuracy of hologram creation.
Different types of holograms offer varying perspectives. Split beam holograms use a flat photographic plate, while cylindrical holograms allow for 360-degree viewing. In cylindrical holography, a glass cylinder surrounds the object, and the hologram is created on the film inside. When illuminated with the same laser light, the hologram appears as a complete, three-dimensional image. These techniques demonstrate the intricate process and immense potential of holography in storing and reconstructing detailed information about objects.
SPK:
Three learnings from your write-up
Interference Patterns Encode 3D Information: The creation of a hologram relies on interference patterns formed by splitting a laser beam into two parts: a reference beam and an object beam. These patterns are imprinted on a photographic plate, and when developed, they contain all the information needed to reconstruct the object. This process preserves the spatial relationships between light waves, encoding the object’s three-dimensional structure.
Holograms Can Be Cut Without Losing Information: A unique property of holograms is that even if they are cut into smaller pieces, each fragment still contains the full information about the original object. This characteristic arises from the distributed nature of the interference patterns, where each part of the hologram encodes the entire object in a compressed form.
Overall take and combining it with the essay, "Am I real:"
Reality as Layers and Interconnectedness: The concept of reality may not be fixed or permanent but instead layered, with interconnectedness—through thoughts, emotions, and actions—forming the essence of existence. This aligns with the idea that our experiences and perceptions are shaped by dynamic relationships, much like how holograms reveal depth and detail through the interplay of light and interference.
The Holographic Universe Hypothesis: Advanced theoretical physics suggests that the universe might be a two-dimensional construct projecting the illusion of three dimensions, akin to a hologram. This challenges conventional notions of space and time, proposing that what we perceive as reality could be a sophisticated projection rather than a tangible existence.
Impermanence and the Nature of Matter and Energy: The physical universe, down to its atomic structure, demonstrates impermanence, with matter and energy interchanging forms. Celestial phenomena such as black holes, dark matter, and quasars further underscore the transient nature of the cosmos, hinting that permanence may be an illusion, and energy might be the only fundamental reality.
Follow-up questions:
1. What role does consciousness play in shaping our perception of reality?
If reality is layered and interconnected, could consciousness be the mechanism that transforms the intangible into something perceivable and meaningful? How does it relate to the proposed holographic nature of the universe?
2. Can we empirically prove or disprove the holographic universe theory?
While the concept of a holographic universe is intriguing, what specific experiments or observations could confirm or challenge this hypothesis? How close are we to achieving such scientific validation?
3. How does the transient nature of matter and energy influence our understanding of existence?
If energy is the only permanent entity, how should this reshape our philosophical and practical approaches to life, death, and the meaning of existence? Does it alter how we view ourselves in relation to the universe?
3 comments:
the spherical cow bit reminded me of a point made at one of the Complexity Theory presentations I attended years ago (that’s about as ‘mathy’ as I can get). He pointed out that many of the equations used in modelling complexity assumes an infinitely long runtime. That’s because including an end point requires more complicated math than one that does not have one.
I also remember a tongue-in-cheek rant in an article many years ago about how science teachers lied to us from the get-go. The whole ‘in a vacuum a cannonball falls at the same rate as a feather’ trope is based on the fiction that a vacuum has nothing at all in it. But since Einstein we know that space is not entirely empty as it has a very low-level of field energy throughout it (that results in matter popping in and out of the seemingly empty space). And is also why heavy masses ‘bend space’. It’s a thing.
Of course, the point being made in this scenario is NOT perfection down to infinitesimally small exactness, but to factor out the infinite complexity of the actual universe to highlight one small aspect of it.
Enjoyed your feedback! Indeed - giving up on infinity to get any handle on the environment around us is a defining approach for us as humans
The holograph business that my Dad has brough up for discuss "IS" a very nice analogy indeed - it took all my familiarity with him to tone down the math and physics wonkiness - indeed you should have seen his first DRAFT! LOL
hahaha! I relate to the “assume it’s a sphere!” A spherical cowBrilliant write up. Enjoyed the read. Thought provoking, scientifically.
It took me back to a 3D memory, standing at the entrance of Peddananagaru’s lab in Camden circa August 1997. As I stared into a glass cube which displayed the hologram of a chessboard.
To your amazing questions, I wonder if memories in the printed in 3D. Or 2D that is unpacked into 3D data when recalled. But they are empowered by cognitive noise which can sometimes convince humans that their memory is accurate when in fact it is a hallucination partly. Pretty sure in the cognitive segments of the research you lead, these elements have come up.
But I digress. There isn’t a single holographic experience I have experienced thus far without thinking of Peddananagaru and you. Including the holographic experiences that Disney has incorporated in its rides. ☺️
Have the discussions led to wanting to re-watch any classic science fiction films? Some may already be covered in your movie shortlist from start of Jan. Minority Report, Blade Runner 2049, Star Wars and Star Trek are some franchises that come to mind which explore holographic imagery as an integral part of daily lives.
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