Flux Change
Flux Change - Related Videos
09:05
Measurements of CO2 Fluxes at Non-Ideal Eddy Covariance Sites
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2019
The presented protocol uses the eddy covariance method at non-typical locations, applicable to all types of short-canopy ecosystems with limited area, on a currently reforested windthrow site in Poland. Details of measuring site setup rules, flux calculations and quality control, and final result analysis, are described.
03:54
Monitoring B Cell Activation with Antigenic Liposomes using a Calcium-Flux Assay
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2025
This video showcases the assessment of B cell activation through the utilization of antigenic liposomes. B cells treated with calcium-sensitive Indo-1 dye are distinguished using flow cytometry, and their violet-to-blue fluorescence ratio is analyzed. As the cells encounter antigenic liposomes, it triggers B cell activation through calcium influx, progressively enhancing the violet-to-blue fluorescence signal ratio over time.
08:14
Climate Change - Student Protocol
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2019
Melting Land and Sea Ice ExpandNOTE: This activity is a simulation of land- and sea-ice melting and their effects on water levels. First, label one graduated cylinder as 'Sea Ice' and the other graduated cylinder as 'Land Ice.' Hypotheses: the experimental hypothesis might be that the land ice melting will cause the water level to rise more than the melting sea ice. The null hypothesis would be that there will be no difference in the change in water level between the two containers. Add 10 ice...
04:34
Climate Change - Concepts
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2019
The certainty of climate change remains a public controversy despite the consensus among approximately 97% of active climate researchers, who not only agree that the Earth’s climate is changing but also state that this change is intensified by human activity, predominantly carbon emissions 1. The disconnect between the public and the experts is partly due to poor understanding of the mechanisms involved in climate change as well as the differences among essential concepts such as weather and...
01:15
Electric Flux
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2025
The concept of flux describes how much of something goes through a given area. More formally, it is the dot product of a vector field within an area. For a better understanding, consider an open rectangular surface with a small area that is placed in a uniform electric field. The larger the area, the more field lines go through it and, hence, the greater the flux; similarly, the stronger the electric field (represented by a greater density of lines), the greater the flux. On the other hand, if...
FAQs
The relevant variables are the field strength, the surface area, and the angle between the field and the surface. A change in any one of these quantities changes the magnetic flux through that surface. Tracking which variable changes helps explain why an electromotive force appears and identifies the physical condition responsible for the induced electrical effect.
Rotating a surface changes the angle through which the magnetic field passes, even if the field strength and surface area remain constant. This alters the magnetic flux over time, which Faraday’s law connects to an induced electromotive force. The example shows that induction depends not only on stronger fields or larger surfaces, but also on geometric orientation.
Lenz’s law states that the direction of the induced electromotive force opposes the change in magnetic flux that produced it. This direction is not an independent effect; it is linked to whether the flux is increasing or decreasing. Applying this principle helps interpret the behavior of electromagnetic induction and predict the opposing response in a physical system.
An experiment can track the field strength, surface area, and field-surface angle as conditions vary with time. Comparing these measurements identifies how the magnetic flux changes, while Faraday’s law relates that change to an induced electromotive force. Lenz’s law then provides the expected direction, allowing researchers to connect measured electrical behavior with the changing field.
Generators use flux change to convert mechanical energy into electrical energy, whereas transformers use changing flux to transfer electrical energy between circuits. In both cases, Faraday’s law provides the induction mechanism, but the systems serve different energy-transfer roles. This distinction makes flux change central to both electrical generation and the operation of power-system components.
Flux change supports several practical technologies, including power systems, sensors, and wireless charging. It also provides a framework for experimental studies of electromagnetic behavior. These applications rely on controlling or detecting changes in magnetic flux to produce, transfer, or measure electrical effects, showing how the same physical principle connects laboratory investigations with energy and sensing technologies.