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#holograms

1 post1 participant0 posts today
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Laserdisc Turtle (Ewan)

I know it's a cliché but as I get older fewer things fill me with wonder...but no matter how much I learn about them real #holograms always feel like actual magic to me.

I remember my Dad once describing a #hologram he saw that demonstrated a working magnifying glass over text, with the lens magnifying the words.

I spotted this one recently and picked it up. I'm not sure if it's the same one he described to me all those years ago but it's still a lovely example and it makes me think of him.

A hand holds up a framed hologram against a blank wall. The hologram shows a page of text, the dictionary definition for a Hologram, with a magnifying glass held over the text. The paper comes across as rainbow coloured...it's really hard to photograph holograms.
A similar picture of the same hologram, but showing it from a different angle. The edges of the magnifying glass can now be seen, and parts of words not visible before can now be seen in the lens. Words can even be seen reflected on the metallic edge of the magnifying glass.
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ResearchBuzz: Firehose

Optica: AI combined with holograms creates an uncrackable optical encryption system. “Writing in Optica, [Stelios] Tzortzakis and colleagues describe the new system, which uses neural networks to retrieve elaborately scrambled information stored as a hologram. They show that trained neural networks can successfully decode the intricate spatial information in the scrambled images.”

https://rbfirehose.com/2025/02/01/optica-ai-combined-with-holograms-creates-an-uncrackable-optical-encryption-system/

ResearchBuzz: Firehose | Individual posts from ResearchBuzz · Optica: AI combined with holograms creates an uncrackable optical encryption system | ResearchBuzz: Firehose
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#AI#CyberSecurity#Encryption
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merlin / alex glow

Unearthed some of my old #holograms from college, inspired by the recent 3Blue1Brown video. This is my favorite piece: a shard of glass and a thin layer of chemical emulsion, revealing a a silvery White Rabbit belt buckle owned by my prof, Mike Hannum.

What deep magic this is, echoed in the endless dark sustain of the octave #mandolin... I'll share some more soon. ✨

// #holography

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