Born on this day in 1887, Erwin Schrödinger was an Austrian-Irish physicist who developed a number of fundamental results in quantum theory. He is also known for his “Schrödinger’s cat” thought experiment.

Did you know that:

• American inventor Isaac Singer patented the sewing machine on this day in 1851
• Thomas Edison completed the first model for the phonograph, a device that recorded sound onto tinfoil cylinders, on this day in 1877
• Clarence Birdseye patented a method for packaging frozen foods on this day in 1930

// Compiled by Zoya Siddiqui