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The Hindu
The Hindu
Technology
Adhip Agarwala

The physics that lets you forget your glasses are on your face | Explained

When I am already getting late for my morning lecture, here at IIT Kanpur where I teach, that is the exact moment my spectacles choose to play hide-and-seek with me. Not in the kitchen nor near the washing machine; neither on the study table nor in the almirah. I struggled through every item on my bed: the winter blanket, the wet towel, and the wordy non-fiction book that helps me fall asleep last night, but to no avail.

As I debated myself if things really could disappear into thin air and, in frustration, placed my hand on my face, I realised the spectacles had been wearing me the whole time.

My students blamed me for the delay in starting the lecture that day, but the real problem lay with the glass – something that’s everywhere but is barely visible anywhere.

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