We aren’t sure if [Looking Glass Universe] didn’t trust the accepted number for Planck’s constant, or just wanted the experience of measuring it herself. Either way, she took some LEDs and worked out ...

The physicist Max Planck (actually born as Marx Planck) is best known for the development of his universal constant that defines physics at the most basic level. It is an important number, and today ...

That the universe is expanding has been known for almost a hundred years now, but how fast? The exact rate of that expansion ...