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Science • Phil • Cr. Think • Hist • …

Alhazen

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Author note. 

Explore voice = Exploratory style. Very punchy. Personal, and lively using “me,” “you,” “us,” and “I” freely.

I want you to feel me right there with you. We use “I” and “me” and “us” without apology. If the Explain voice is a bridge, the Explore voice is the hike we take across it. It is lively, reflective, and sometimes a bit raw. It is the sound of a shared exploration where I lead you by the hand, but we both discover the view at the same time.

This is where I get to think out loud. Not with definitions, we aren’t just looking at the facts; we are looking at how they feel and what they mean for our lives. I’m talking to you about what I’ve found and what I’m still figuring out. It is engaging because it is real, and it is reflective because it is honest.

The goal is real advice and enjoyable reading. I want to land on something you can actually use. It’s about being direct, being punchy, and making sure that by the time we reach the end of the page, we’ve both found something worth keeping.

And now the piece.

Alhazen

born 965
965 to 1040
42 Generations Ago

30 Phil, Chapter 17: Alhazen and the Senses
Alhazen was born in Basra around 965 CE, a city located in present-day Iraq. In his 30s, Alhazen faced the challenge of his life. He was “commissioned” to produce a solution for regulating the unpredictable and deadly flooding of the Nile. As he delved into the problem, it became clear the task was impossible. The “emission theory,” the prevalent theory before Alhazen, asserted that light originates from your eyes, hits objects, and is then reflected back. In “Book of Optics,” he explored aspects of vision and light, including reflection and refraction. He disproved the emission theory and proved the intromission theory. 

Pictured: Artist impression.


That History Story, 

was first published on TST 2 years ago.

The flashcard inspired by it is this.

All this is part of the broader TST project.
Tidbits are written to stand alone, but they are also designed to interlock—forming a research layer that supports deeper synthesis.
This work is meant to serve both readers and future tools—preserving reasoning, sources, and structure for long-term use.

The end!

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