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Related Concept Videos

What is Climate?01:16

What is Climate?

Climate refers to the prevailing weather conditions in a specific area over an extended period. As the saying goes, “Climate is what you expect. Weather is what you get.” Climate is influenced by geographic factors, such as latitude, terrain, and proximity to bodies of water.
Global Climate Change01:50

Global Climate Change

Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
Effects of Temperature on Free Energy02:11

Effects of Temperature on Free Energy

The spontaneity of a process depends upon the temperature of the system. Phase transitions, for example, will proceed spontaneously in one direction or the other depending upon the temperature of the substance in question. Likewise, some chemical reactions can also exhibit temperature-dependent spontaneities. To illustrate this concept, the equation relating free energy change to the enthalpy and entropy changes for the process is considered:
Effect of Temperature Change on Reaction Rate02:28

Effect of Temperature Change on Reaction Rate

The Arrhenius equation,
Factors Affecting Body Temperature01:28

Factors Affecting Body Temperature

As a nurse, it is vital to understand the factors affecting body temperature to monitor variations and effectively evaluate deviations from regular.
Factors may  include:
Temperature Measurement Sites01:14

Temperature Measurement Sites

A thermometer measures body temperature. The common sites for measuring body temperature are the oral cavity, axillary region, temporal artery, and skin surface, such as the forehead, abdomen, and axilla. True core body temperature is assessed in the rectum, tympanic membrane, pulmonary artery, esophagus, and urinary bladder.
Oral: When assessing oral temperature, the thermometer tip should be placed under the tongue in the posterior sublingual pocket. It offers accurate readings and can be...

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Related Experiment Video

Updated: Jul 22, 2026

Construction of a Compact Low-Cost Radiation Shield for Air-Temperature Sensors in Ecological Field Studies
05:56

Construction of a Compact Low-Cost Radiation Shield for Air-Temperature Sensors in Ecological Field Studies

Published on: November 6, 2018

Secular change in the variability of temperature.

P E Waggoner1

  • 1The Connecticut Agricultural Experiment Station, New Haven, Connecticut 06504.

Proceedings of the National Academy of Sciences of the United States of America
|April 1, 1979
PubMed
Summary

New Haven

Area of Science:

  • Climate Science
  • Meteorology
  • Environmental Science

Background:

  • Analysis of long-term temperature data is crucial for understanding climate variability.
  • Secular changes in temperature patterns can impact regional climate dynamics.

Purpose of the Study:

  • To investigate secular changes in temperature variability in New Haven, Connecticut, from 1781 to 1970.
  • To examine trends in temperature differences, standard deviations, and persistence over 19 decades.

Main Methods:

  • Statistical analysis of mean monthly and seasonal temperatures (January, April, summer, October).
  • Calculation of standard deviations (SD) within decades and trends.
  • Assessment of correlations between means, SDs, and trend magnitudes.

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Simulating Temperature in a Soil Incubation Experiment
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Temperature Response of Soil Organic Matter Decomposition Rates: Construction and Applications of a Temperature Gradient Block
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Temperature Response of Soil Organic Matter Decomposition Rates: Construction and Applications of a Temperature Gradient Block

Published on: January 30, 2026

Related Experiment Videos

Last Updated: Jul 22, 2026

Construction of a Compact Low-Cost Radiation Shield for Air-Temperature Sensors in Ecological Field Studies
05:56

Construction of a Compact Low-Cost Radiation Shield for Air-Temperature Sensors in Ecological Field Studies

Published on: November 6, 2018

Simulating Temperature in a Soil Incubation Experiment
08:39

Simulating Temperature in a Soil Incubation Experiment

Published on: October 28, 2022

Temperature Response of Soil Organic Matter Decomposition Rates: Construction and Applications of a Temperature Gradient Block
07:46

Temperature Response of Soil Organic Matter Decomposition Rates: Construction and Applications of a Temperature Gradient Block

Published on: January 30, 2026

Main Results:

  • A significant decrease in the January-July temperature difference was observed.
  • The standard deviation of summer temperatures within decades decreased significantly.
  • No significant trends were found in the persistence of January temperatures over the study period.

Conclusions:

  • Evidence suggests a secular change in temperature variability, particularly a reduction in summer temperature fluctuations.
  • The findings contribute to understanding long-term climate shifts in the northeastern United States.