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# Time-Travel Tech

2026-11-07

Time-Traveler's Guide: Bronze Mirrors Are Blurry Yellow Discs—How to Build Crystal-Clear Full-Length Mirrors with Tin Foil and Silver

Stranded in antiquity where royals squint into dim, tarnishing bronze mirrors? Here is the complete chemistry and metallurgy guide to replicating 16th-century Venetian tin-mercury amalgam mirrors and Liebig's silver mirror reaction using cinnabar, tin foil, and honey.

2026-11-02

Time-Traveler's Guide: Making Penicillin from Moldy Oranges Will Kill You—How to Extract Willow Salicin and Allicin Instead

Web novels love the trope of brewing penicillin from moldy oranges in ancient times. In reality, that produces lethal mycotoxins and anaphylactic shock. Here is the real biochemistry and step-by-step extraction of Allicin, Willow Bark Salicin, and Berberine.