https://www.khanacademy.org/science/modern-physics-essentials/x1bb01bdec712d446:why-light-and-matter-are-two-faced/x1bb01bdec712d446:observing-the-photoelectric-effect-in-action/v/all-photoelectric-effect-graphs-effect-of-intensity-frequency 2021-08-30T14:19:26.213659777Z All photoelectric effect graphs: Effect of intensity/frequency Let's explore various graphs of photoelectric experiment, and see how changing intensity and frequency changes the graphs. Mahesh Shenoy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw All photoelectric effect graphs: Effect of intensity/frequency Let's explore various graphs of photoelectric experiment, and see how changing intensity and frequency changes the graphs. https://cdn.kastatic.org/ka-youtube-converted/8BU3Z7ePzCM.mp4/8BU3Z7ePzCM.mp4 638 Wave-particle duality of light and matter https://www.khanacademy.org/science/modern-physics-essentials/x1bb01bdec712d446:why-light-and-matter-are-two-faced/x1bb01bdec712d446:observing-the-photoelectric-effect-in-action/e/effect-of-intensity-and-frequency 2026-04-07T22:23:57.656416987Z Effect of intensity and frequency Let's do some problems to better understand the effect of varying intensity and frequency on saturation current and stopping potential. exercise https://www.khanacademy.org/science/cosmology-and-astronomy/universe-scale-topic/light-fundamental-forces/v/introduction-to-light 2021-01-04T18:35:18Z Introduction to light Light and the electromagnetic radiation spectrum. Wave and particle-like behavior, and how to calculate the wavelength or frequency of a light wave.  Sal Khan video https://cdn.kastatic.org/googleusercontent/cVlKcFz4C0EyjX_DkTGccu23EagJYwwMVWw-oBtmT-CtU9iW8r-KoUvwu9HF_eYB3fgDOp3ER_z2r_umYyjl4xc Introduction to light Light and the electromagnetic radiation spectrum. Wave and particle-like behavior, and how to calculate the wavelength or frequency of a light wave.  https://cdn.kastatic.org/ka-youtube-converted/rLNM8zI4Q_M.mp4/rLNM8zI4Q_M.mp4 577 Wave-particle duality of light and matter https://www.khanacademy.org/science/in-in-class-12th-physics-india/in-in-electromagnetic-waves/in-in-phy-cbse-introduction-to-electromagnetic-waves/a/light-and-the-electromagnetic-spectrum 2021-07-06T13:18:37Z Light: Electromagnetic waves, the electromagnetic spectrum and photons Properties of electromagnetic radiation and photons article https://www.khanacademy.org/science/ka-chemistry-grade-11/x7b9df4d3282049b3:in-in-structure-of-atom/x7b9df4d3282049b3:in-in-particle-nature-of-electromagnetic-radiation-planck-s-quantum-theory/v/dual-nature-of-em-radiation 2025-06-18T17:20:09.424943095Z Dual nature of EM radiation Is light a wave or a particle or both? In this video, we explore the idea of dual nature of matter and radiation, and how a series of groundbreaking experiments changed our understanding of light and particles forever. We’ll walk you through how interference and diffraction proved light’s wave nature, how black body radiation and the photoelectric effect revealed its particle behavior, and how these two sets of observations led to the concept of dual nature. This isn’t just a theory, it’s the realization that not just light, but even particles like electrons can behave like waves and exhibit dual nature, laying the groundwork for quantum mechanics. Aman Sourav video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Dual nature of EM radiation Is light a wave or a particle or both? In this video, we explore the idea of dual nature of matter and radiation, and how a series of groundbreaking experiments changed our understanding of light and particles forever. We’ll walk you through how interference and diffraction proved light’s wave nature, how black body radiation and the photoelectric effect revealed its particle behavior, and how these two sets of observations led to the concept of dual nature. This isn’t just a theory, it’s the realization that not just light, but even particles like electrons can behave like waves and exhibit dual nature, laying the groundwork for quantum mechanics. https://cdn.kastatic.org/ka-youtube-converted/LhCq5Og6afk.mp4/LhCq5Og6afk.mp4 477 Wave-particle duality of light and matter