Hi, I’m Avinto, and now we’ll dive into the fascinating world of Quantum Physics. Classical physics couldn’t explain many phenomena at microscopic scales, and quantum theory emerged to fill in the gaps. We’ll start by understanding the failures of classical physics in describing atomic and subatomic particles. We’ll then look at Planck’s quantum theory of blackbody radiation, Einstein’s quantum theory of light, and the photoelectric effect. We’ll also explore the de Broglie wavelength and how it applies to particles like electrons. Plus, we’ll discuss the production and uses of x-rays, a major application of quantum principles.