IB Physics Topic 5 Videos

This video introduces early models of the atom, including the Bohr and Rutherford models, and examines key experiments and observations that shaped our understanding of atomic structure.

This video reviews subatomic particles and fundamental forces, explains atomic and nuclide notation, and compares isotopes and ions using worked examples.

This video explores how nuclear radius can be calculated using Rutherford scattering and electron diffraction. It also revisits the Bohr model to explain how quantized angular momentum leads to specific energy levels in atoms.

This video introduces wave-particle duality and presents the Davisson–Germer experiment, Compton scattering, and the photoelectric effect as key experimental evidence for the dual nature of electrons and photons.

This video explains Einstein’s photoelectric effect, introducing concepts like the work function, threshold frequency, stopping potential, and their implications for the particle nature of light.

This video explains what causes nuclear decay and introduces the four main types of radiation: alpha, beta minus, beta plus, and gamma, including their properties and penetration levels.

This video explores fusion and fission reactions, mass-energy equivalence, and nuclear binding energy calculations. It also covers radiation protection strategies.

This video focuses on the strong nuclear force and how it governs nuclear stability, introducing the neutron-to-proton ratio, nuclear binding energy, and discrete nuclear energy levels as evidence for quantization in nuclei.

This video covers decay constants, half-life, and exponential decay equations. It concludes with the beta decay spectrum, which provides indirect evidence for the existence of neutrinos through energy distribution in beta decay.

This video describes the fission process, how chain reactions are controlled in nuclear reactors, and how radioactive waste is managed through treatment and long-term storage.

This video explores nuclear fusion in stars, hydrostatic equilibrium, and how stars form and evolve into white dwarfs, neutron stars, or black holes depending on their mass.

This video introduces key astronomical units and explains how stellar parallax is used to measure stellar distances. It also includes how luminosity, temperature, and radius are calculated.