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

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

Cardioids in coffee cups - Chalkdust

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

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

Cardioid - MacTutor History of Mathematics

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

The Cardioid

Cardioids in coffee cups - Chalkdust

calculus - Cardioid in coffee mug? - Mathematics Stack Exchange