Related Experiment Video

Updated: Jan 25, 2026

Measuring Diffusion Coefficients via Two-photon Fluorescence Recovery After Photobleaching
07:00

Measuring Diffusion Coefficients via Two-photon Fluorescence Recovery After Photobleaching

Published on: February 26, 2010

11.7K

Measurement of the diffusion of light within paper

Geoffrey Rogers, Olympe Corblet, Thierry Fournel

    Journal of the Optical Society of America. A, Optics, Image Science, and Vision
    |May 3, 2019
    PubMed

    More Related Videos

    Measuring Light-Switching Behavior Using an Occupancy and Light Data Logger05:50

    Measuring Light-Switching Behavior Using an Occupancy and Light Data Logger

    Published on: January 16, 2020

    6.2K
    Fluorescent Paper Strips for the Detection of Diesel Adulteration with Smartphone Read-out07:10

    Fluorescent Paper Strips for the Detection of Diesel Adulteration with Smartphone Read-out

    Published on: November 9, 2018

    9.8K

    Related Concept Videos

    Diffusion01:12

    Diffusion

    Diffusion is the passive movement of substances down their concentration gradients—requiring no expenditure of cellular energy. Substances, such as molecules or ions, diffuse from an area of high concentration to an area of low concentration in the cytosol or across membranes. Eventually, the concentration will even out, with the substance moving randomly but causing no net change in concentration. Such a state is called dynamic equilibrium, which is essential for maintaining overall...
    217.2K
    Diffusion01:21

    Diffusion

    Diffusion is a type of passive transport. In passive transport, a substance tends to move from an area of high concentration to an area of low concentration until the concentration is equal across the space. For example, take the diffusion of substances through the air. When someone opens a perfume bottle in a room filled with people, the perfume is at its highest concentration in the bottle and is at its lowest at the edges of the room. The perfume vapor will diffuse, or spread away, from the...
    6.3K
    Facilitated Diffusion01:16

    Facilitated Diffusion

    The plasma membrane, a critical structure in cellular biology, houses an array of transporters, or carrier proteins, interspersed within its lipid bilayer. These proteins play a crucial role in solute transport through facilitated diffusion, a form of passive diffusion that uses transporters to move the molecules across the membrane.
    In this process, substrates such as organic compounds and ions interact with a transporter on one side, triggering conformational changes in proteins that enable...
    1.2K
    Behavior of Gas Molecules: Molecular Diffusion, Mean Free Path, and Effusion03:48

    Behavior of Gas Molecules: Molecular Diffusion, Mean Free Path, and Effusion

    Although gaseous molecules travel at tremendous speeds (hundreds of meters per second), they collide with other gaseous molecules and travel in many different directions before reaching the desired target. At room temperature, a gaseous molecule will experience billions of collisions per second. The mean free path is the average distance a molecule travels between collisions. The mean free path increases with decreasing pressure; in general, the mean free path for a gaseous molecule will be...
    31.2K
    Protein Diffusion in the Membrane01:24

    Protein Diffusion in the Membrane

    Proteins show rotational as well as lateral diffusion across the membrane. The lateral diffusion of proteins was confirmed through the cell fusion experiment where mouse and human cells were fused, resulting in hybrid cells. When the human and mouse cells fused, the specific membrane proteins on human and mouse cells were marked with the red and green-fluorescent markers, respectively. Initially, the red and green fluorescence was located on the respective hemisphere of the cell. As time...
    5.5K
    Light Acquisition02:16

    Light Acquisition

    In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
    9.4K