ELI5 Explain Like I'm 5: Bite sized answers to stuff you should know about - in a mini podcast

Author: ELI5 Explain Like I'm Five Podcast

Explain Like I'm Five, aka ELI5, is the mini-podcast series where we take the questions you always wanted to ask, and talk about them in a way that is easy to understand. Made possible by the amazing reddit community at r/explainlikeimfive. See episode show notes for user credits.
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Language: en

Genres: Documentary, Education, Self-Improvement, Society & Culture

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ELI5 One Way Mirrors - how do they work?
Episode 356
Wednesday, 18 February, 2026

How do one way mirrors allow light to pass in only one direction? If light travels through the glass equally from both sides, why does the simple flip of a light switch create a hidden observer? How does a microscopic layer of aluminum or silver on a piece of glass actually bounce light back to create a reflection? Why does our brain instantly prefer our flipped mirror image over the real perspective captured in a photograph? ... we explain like I'm five Thank you to the r/explainlikeimfive community and in particular the following users whose questions and comments formed the basis of this discussion: avalancheofneed, afropuf, coolminded, tequilaamocking_bird, blade_torlock, imtrollin_theyhatin, antiproton and spilgrim16 To the ELI5 community that has supported us so far, thanks for all your feedback and comments. Join us on Twitter: https://www.twitter.com/eli5ThePodcast/ or send us an e-mail: ELI5ThePodcast@gmail.com