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- https://chem.libretexts.org/Bookshelves/Physical_and_Theoretical_Chemistry_Textbook_Maps/Physical_Chemistry_(LibreTexts)/05%3A_The_Harmonic_Oscillator_and_the_Rigid_RotorThis page discusses the harmonic oscillator, a key concept in nature illustrated through examples like pendulums and springs. Its mathematical simplicity makes it ideal for education. Following Hooke'...This page discusses the harmonic oscillator, a key concept in nature illustrated through examples like pendulums and springs. Its mathematical simplicity makes it ideal for education. Following Hooke's law, it models phenomena in classical and quantum mechanics, including molecular vibrations. Quantum descriptions provide wavefunctions and energy levels, applicable in infrared spectroscopy.
- https://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Introductory_Chemistry_(CK-12)/04%3A_Atomic_Structure/4.11%3A_Cathode_Ray_TubeThis page outlines the transition from cathode ray tube (CRT) televisions to modern flat screens, emphasizing improved quality and spatial efficiency. It details the historical advancements in CRT tec...This page outlines the transition from cathode ray tube (CRT) televisions to modern flat screens, emphasizing improved quality and spatial efficiency. It details the historical advancements in CRT technology, including contributions from Heinrich Geissler and Sir William Crookes, who revealed cathode rays as particle streams.
- https://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Introductory_Chemistry_(CK-12)/21%3A_Acids_and_Bases/21.13%3A_Strong_and_Weak_Bases_and_Base_Ionization_Constant_(left(_K_textb_right))This page discusses two distinct topics: the heat dissipation systems of space shuttles, which utilize ammonia-filled coils to manage heat, and a chemistry overview of bases, distinguishing between st...This page discusses two distinct topics: the heat dissipation systems of space shuttles, which utilize ammonia-filled coils to manage heat, and a chemistry overview of bases, distinguishing between strong and weak bases, exemplified by ammonia.
- https://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Introductory_Chemistry_(CK-12)/06%3A_The_Periodic_Table/6.07%3A_MetalloidsThis page discusses metalloids, elements with properties that are between metals and nonmetals. Key examples include silicon, important in electronics; boron, used in heat-resistant glass; arsenic, kn...This page discusses metalloids, elements with properties that are between metals and nonmetals. Key examples include silicon, important in electronics; boron, used in heat-resistant glass; arsenic, known for toxicity and reduced use in pesticides; and antimony, which strengthens lead mixtures and is vital for electronic applications. The unique characteristics of metalloids allow them to fulfill diverse roles across various industries.
