Why & How do I see this heart-shaped cardioid formed in my cup?, by Shouryaveer Mehta, The Startup

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Ok, first of all if you don’t know what I’m talking about, I’m talking about this shape in a cup of tea/coffee (or even water). I first got curious about this weird shape appearing in my cup a few…

Optics: Why does a heart shape sometimes form in a coffee mug? - Quora

I Heart Cardioids – David Richeson: Division by Zero

All stories published by The Startup on February 06, 2020 – Medium

calculus - Cardioid in coffee mug? - Mathematics Stack Exchange

Why & How do I see this heart-shaped cardioid formed in my cup?, by Shouryaveer Mehta, The Startup

Cardioid Visualization, Heart-shape formed by the chords of a circle

Cardioids in coffee cups - Chalkdust

Cardioid Visualization, Heart-shape formed by the chords of a circle

calculus - Cardioid in coffee mug? - Mathematics Stack Exchange

All stories published by The Startup on February 06, 2020 – Medium

I recognized this shape as a cardioid but don't understand how it pops up here. Help? : r/math

Cardioids in coffee cups - Chalkdust

calculus - Cardioid in coffee mug? - Mathematics Stack Exchange

I Heart Cardioids – David Richeson: Division by Zero