Related Experiment Video

Updated: Feb 6, 2026

Construction and Characterization of External Cavity Diode Lasers for Atomic Physics
09:10

Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

Published on: April 24, 2014

28.6K

Real-time standoff detection of nitrogen isotopes in ammonia plumes using a swept external cavity quantum cascade

Mark C Phillips, Brian E Brumfield, Sivanandan S Harilal

    Optics Letters
    |August 31, 2018
    PubMed

    More Related Videos

    Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection12:57

    Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

    Published on: October 13, 2017

    9.6K
    Automated, High-resolution Mobile Collection System for the Nitrogen Isotopic Analysis of NOx07:14

    Automated, High-resolution Mobile Collection System for the Nitrogen Isotopic Analysis of NOx

    Published on: December 20, 2016

    12.1K

    Related Concept Videos

    The Nitrogen Cycle01:49

    The Nitrogen Cycle

    Nitrogen atoms, present in all proteins and DNA, are recycled between abiotic and biotic components of the ecosystem. However, the primary form of nitrogen on Earth is nitrogen gas, which cannot be used by most animals and plants. Thus, nitrogen gas must first be converted into a usable form by nitrogen-fixing bacteria before it can be cycled through other living organisms. The use of nitrogen-containing fertilizers and animal waste products in human agriculture has greatly influenced the...
    60.3K
    Quantum Numbers02:43

    Quantum Numbers

    It is said that the energy of an electron in an atom is quantized; that is, it can be equal only to certain specific values and can jump from one energy level to another but not transition smoothly or stay between these levels.
    50.8K
    Intracellular Signaling Cascades01:24

    Intracellular Signaling Cascades

    Once a ligand binds to a receptor, the signal is transmitted through the membrane and into the cytoplasm. The continuation of a signal in this manner is called signal transduction. Signal transduction only occurs with cell-surface receptors, which cannot interact with most components of the cell, such as DNA. Only internal receptors can interact directly with DNA in the nucleus to initiate protein synthesis. When a ligand binds to its receptor, conformational changes occur that affect the...
    53.6K
    Isotopes01:12

    Isotopes

    Elements have a set number of protons that determines their atomic number (Z). For example, all atoms with eight protons are oxygen; however, the number of neutrons can vary for atoms of the same element. The sum of the number of protons and the number of neutrons is the mass number (A). Atoms with the same atomic number but different mass numbers are called isotopes. Elements can have multiple isotopes, for example, carbon-12, carbon-13, and carbon-14.
    An element's atomic mass, or weight,...
    64.7K
    Elements: Chemical Symbols and Isotopes02:31

    Elements: Chemical Symbols and Isotopes

    A chemical symbol is an abbreviation used to indicate an element or an atom of an element. For example, the symbol for mercury is Hg. The same symbol is used to indicate one atom of mercury (microscopic domain) or to label a container of many atoms of the element mercury (macroscopic domain).
    Some symbols are derived from the common English name of the element; others are abbreviations of the name in another language — Latin, Greek or German. For example, the symbol for aluminum (common name)...
    126.4K
    Rab Cascades01:25

    Rab Cascades

    Rab GTPases act in a regulated cascade during membrane fusion, helping the lipid bilayers mix. The Rab family of proteins are active when bound to GTP, and inactive when bound to GDP. Hence, they act as guanine nucleotide-dependent molecular switches. Rab-GTP recognizes and binds to long or short-range tethering proteins to capture the target vesicle. These tethers coordinate with SNAREs on the vesicle and the target membrane to assemble the trans SNARE complex that locks the mixing bilayers.
    3.6K