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Related Concept Videos

End Point Prediction: Gran Plot01:07

End Point Prediction: Gran Plot

A Gran plot is used to predict the equivalence volume or endpoint of a potentiometric or acid-base titration without reaching the endpoint. Typically, titration data is collected as a function of the titrant's volume up to a point less than the equivalence volume and then transformed into a linear format. The straight line is extended to the x-axis, indicating the necessary titrant volume to achieve the equivalence point.
For potentiometric titration, the Gran plot is created by plotting the...
Hindsight Biases01:12

Hindsight Biases

Hindsight bias leads you to believe that the event you just experienced was predictable, even though it really wasn’t. In other words, you knew all along that things would turn out the way they did. Can you relate this to the phrase "Hindsight is 20/20" now?
Predicting Reaction Outcomes02:24

Predicting Reaction Outcomes

Kinetics describes the rate and path by which a reaction occurs. In contrast, thermodynamics deals with state functions and describes the properties, behavior, and components of a system. It is not concerned with the path taken by the process and cannot address the rate at which a reaction occurs. Although it does provide information about what can happen during a reaction process, it does not describe the detailed steps of what appears on an atomic or a molecular level. On the other hand,...
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Prediction Intervals

The interval estimate of any variable is known as the prediction interval. It helps decide if a point estimate is dependable.
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Actor-Observer Effect01:23

Actor-Observer Effect

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Naturalistic Observations

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Related Experiment Video

Updated: Jul 12, 2026

Mechanoluminescent Visualization of Crack Propagation for Joint Evaluation
04:58

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Published on: January 6, 2023

Predicting and observing el nino.

K Wyrtki, E Stroup, W Patzert

    Science (New York, N.Y.)
    |January 30, 1976
    PubMed
    Summary
    This summary is machine-generated.

    Scientists predicted a weak El Niño event in 1975 based on the southern oscillation index. Oceanographic observations confirmed the event

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    Published on: April 21, 2015

    Area of Science:

    • Oceanography
    • Climate Science

    Background:

    • The southern oscillation index (SOI) is a key indicator for predicting El Niño events.
    • El Niño events significantly impact marine ecosystems and global weather patterns.

    Purpose of the Study:

    • To observe and study the occurrence and temporal development of a predicted weak El Niño event in 1975.
    • To investigate the oceanic conditions associated with the early stages of El Niño.

    Main Methods:

    • Utilized the southern oscillation index (SOI) for El Niño prediction.
    • Conducted two oceanographic research cruises off Peru and Ecuador.
    • Monitored sea surface temperature, salinity, and thermocline depth.

    Main Results:

    • Observed a massive transgression of warm, low-salinity water across the equator to 4 degrees S.
    • Documented a depression of the thermocline along the equator and off South America, indicating El Niño onset.
    • Noted a return to normal oceanic conditions by the second cruise, suggesting the event's short duration.

    Conclusions:

    • The study confirmed the predictive power of the SOI for El Niño events.
    • The observed oceanic changes validated the initial stages of El Niño development.
    • The rapid return to normal conditions highlighted the transient nature of this specific weak El Niño event.