{"ok":true,"q":"Stars and Galaxies","n":5,"results":[{"id":"class_08\/science\/chapter_17_stars_and_the_solar_system","title":"Chapter 17 — Stars And The Solar System","class_num":8,"subject":"science","subject_label":"Science","summary":"This chapter introduces basic astronomy and our neighbourhood in space: the stars and the Solar System. It explains what stars are, how they differ in brightness and position (cons","topic":"Astronomical Distances and Measurement Units","anchor":"topic-15"},{"id":"class_11\/geography\/chapter_02_the_earth","title":"Chapter 2 — The Earth","class_num":11,"subject":"geography","subject_label":"Geography","summary":"This chapter introduces the Earth as a planet in the solar system and explains its shape, size, motions and the geographic grid used to locate any place on its surface. It stresses","topic":"Universe and Solar System","anchor":"topic-1"},{"id":"class_12\/physics\/chapter_04_atoms","title":"Chapter 12 — Atoms","class_num":12,"subject":"physics","subject_label":"Physics","summary":"This chapter introduces the atomic structure as revealed by early 20th-century experiments and the first successful quantum model of the atom (Bohr model). Beginning with Rutherfor","topic":"Bohr model of the hydrogen atom","anchor":"topic-5"},{"id":"class_11\/physics\/chapter_01_physical_world","title":"Chapter 1 — Physical World","class_num":11,"subject":"physics","subject_label":"Physics","summary":"This chapter introduces the subject of physics: its scope, methods and central role in understanding nature and underpinning technology. It explains how physics builds models and l","topic":"Fundamental Forces in Nature","anchor":"topic-4"},{"id":"class_11\/chemistry\/chapter_02_structure_of_atom","title":"Chapter 2 — Structure Of Atom","class_num":11,"subject":"chemistry","subject_label":"Chemistry","summary":"This chapter introduces the historical development and modern understanding of the atom — from early atomic models to the quantum mechanical model. It explains experimental evidenc","topic":"Atomic spectra","anchor":"topic-6"}]}