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Related Concept Videos

Lenz's Law01:15

Lenz's Law

The direction in which the induced emf drives the current around a wire loop can be found through the negative sign. However, it is usually easier to determine this direction with Lenz's law, named in honor of its discoverer, Heinrich Lenz (1804–1865). Lenz's law states that the direction of the induced emf drives the current around a wire loop always to oppose the change in magnetic flux that causes the emf.
If a bar magnet is moved toward a coil such that the magnetic flux through the coil...
Lattice Centering and Coordination Number02:33

Lattice Centering and Coordination Number

The structure of a crystalline solid, whether a metal or not, is best described by considering its simplest repeating unit, which is referred to as its unit cell. The unit cell consists of lattice points that represent the locations of atoms or ions. The entire structure then consists of this unit cell repeating in three dimensions. The three different types of unit cells present in the cubic lattice are illustrated in Figure 1.
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Imagine taking a large number of identical...
Linearization and Approximation01:26

Linearization and Approximation

Linearization is a mathematical technique used to approximate complex, nonlinear functions with simpler linear models in the vicinity of a chosen reference point. The method is based on the idea that, although a function may be difficult to evaluate exactly, its behavior near a specific input value can often be closely approximated by the tangent line at that point. This approach is particularly useful when small deviations from a known value are involved.Consider the square root function, for...
Larynx01:21

Larynx

The human larynx, often referred to as the voice box, is an intricate organ located in the neck. It serves as a pathway for air to enter the lungs during respiration and is an essential component of voice production.
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Atomic Orbitals02:44

Atomic Orbitals

An atomic orbital represents the three-dimensional regions in an atom where an electron has the highest probability to reside. The radial distribution function indicates the total probability of finding an electron within the thin shell at a distance r from the nucleus. The atomic orbitals have distinct shapes which are determined by l, the angular momentum quantum number. The orbitals are often drawn with a boundary surface, enclosing densest regions of the cloud.
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Application of Linearization and Approximation

A drone flying through complex terrain often relies on more than one sensing method to estimate small changes in altitude. Along with direct measurements, air pressure provides a useful indirect indicator of vertical movement. Atmospheric pressure decreases as altitude increases, and this relationship is commonly described using an exponential model. Although accurate, converting pressure measurements into altitude values requires calculations that are too complex to perform repeatedly during...

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Related Experiment Video

Updated: Jun 1, 2026

Measurements of Waves in a Wind-wave Tank Under Steady and Time-varying Wind Forcing
08:54

Measurements of Waves in a Wind-wave Tank Under Steady and Time-varying Wind Forcing

Published on: February 13, 2018

Andrey Lvov.

Andrey Lvov

    Angewandte Chemie (International Ed. in English)
    |May 30, 2026
    PubMed
    Summary

    Andrey Lvov would revisit experiments on photochromic pyridine-based thioindigo. He finds maintaining a creative team atmosphere the most challenging aspect of his work.

    Area of Science:

    • Organic chemistry
    • Materials science

    Background:

    • Photochromic materials change color upon light exposure.
    • Thioindigo derivatives are known for their color-changing properties.
    • Pyridine-containing compounds offer unique electronic and structural characteristics.

    Purpose of the Study:

    • To explore the synthesis and properties of novel pyridine-based thioindigo compounds.
    • To investigate their potential as photochromic materials.
    • To understand the structure-property relationships governing their photochromism.

    Main Methods:

    • Organic synthesis of pyridine-based thioindigo derivatives.
    • Spectroscopic analysis (UV-Vis, NMR) to characterize the compounds.
    • Photochromic performance testing under different light conditions.

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    High-Throughput Optogenetics Experiments in Yeast Using the Automated Platform Lustro
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    High-Throughput Optogenetics Experiments in Yeast Using the Automated Platform Lustro

    Published on: August 4, 2023

    Related Experiment Videos

    Last Updated: Jun 1, 2026

    Measurements of Waves in a Wind-wave Tank Under Steady and Time-varying Wind Forcing
    08:54

    Measurements of Waves in a Wind-wave Tank Under Steady and Time-varying Wind Forcing

    Published on: February 13, 2018

    High-Throughput Optogenetics Experiments in Yeast Using the Automated Platform Lustro
    03:26

    High-Throughput Optogenetics Experiments in Yeast Using the Automated Platform Lustro

    Published on: August 4, 2023

    Main Results:

    • Successful synthesis of new pyridine-based thioindigo compounds.
    • Demonstration of photochromic behavior in these novel materials.
    • Identification of key structural features influencing photochromic efficiency.

    Conclusions:

    • Pyridine-based thioindigo compounds show promise as a new class of photochromic materials.
    • Further research could lead to applications in optical switches and data storage.
    • The study highlights the importance of molecular design in developing advanced functional materials.