This Quanta Magazine article (below) is a helpful visual recap of whether the cosmos is “flat” or not. Does the cosmic landscape of stars and galaxies extend / expand in all directions like an endless piece of paper? Or another “flat” geometry – “by cutting a chunk out of Euclidean space and gluing it together.”… Continue reading Does the universe have a shape?
[Draft] A recent Nature article (below) was inspiration for this post. I’ve been encountering the use of topology in physics for some time. Typically the mathematics is elusive, but the notions are compelling. Wiki > Topology A continuous deformation (a type of homeomorphism) of a mug into a doughnut (torus) and a cow into a… Continue reading When is a coffee mug like a donut?