With a deep blue background featuring white diagrams of the night sky in both hemispheres

Featuring the tallest mountain on each continent

if it's too cloudy to stargaze

The 17-pack contains one of each of The Dark Matter notebook covers that celebrates the beauty found in darkness and the scenes made by the faintest light

which alters your brain waves to promote relaxation

Equations That Changed the World Whiskey Glass Size:Single With a deep blue backgroundThis whiskey glass celebrates some of the equations that fundamentally changed the way we understand our world. Let it inspire you to dive deeper into your work, complete that problem set, or find creative ways to work out your proof. Raise a glass to mathematics with this Equations That Changed the World Whiskey Glass.