The term "Snell" encompasses a surprisingly broad range of references, from a common surname and given name to several geographical locations in the United States and Antarctica. Beyond places, it denotes various commercial ventures like Snell Acoustics for audio equipment and Snell Limited for digital media products. Notably, the Snell Memorial Foundation plays a vital role in establishing rigorous safety standards for helmets, a critical public service. Perhaps its most significant association, however, is with Snell's Law, the fundamental law of refraction in optics, named after the Dutch astronomer Willebrord Snellius. Other interesting uses include a specific fishing knot, a light rail station in California, and even a Dutch rapper, Snelle, born in 1995.