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Related Concept Videos

Responses to Heat and Cold Stress02:45

Responses to Heat and Cold Stress

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Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
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Specific Heat01:16

Specific Heat

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The specific heat capacity of a substance refers to the energy required to increase the temperature of one gram of that substance by one degree Celcius. Specific heat capacity is often represented in calories (cal), grams (g), and degrees Celsius (oC), but can also be expressed in joules (J), kilograms (kg), and Kelvin (K), among other units.
For example, increasing the temperature of one gram of water by 1°C requires one calorie of heat energy and can be written as 1 cal/g-°C, or...
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Quantifying Heat02:46

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Thermal Energy Microscopically, thermal energy is the kinetic energy associated with the random motion of atoms and molecules. Temperature is a quantitative measure of “hot” or “cold”, which depends on the amount of thermal energy. When the atoms and molecules in an object are moving or vibrating quickly, they have a higher average kinetic energy (KE) (or higher thermal energy), and the object is perceived as “hot”, or it is described as being at a higher temperature. When the...
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Heat Flow and Specific Heat01:12

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Heat is a type of energy transfer that is caused by a temperature difference, and it can change the temperature of an object. Since heat is a form of energy, its SI unit is the joule (J). Another common unit of energy often used for heat is the calorie (cal), which is defined as the energy needed to change the temperature of 1 g of water by 1 °C, specifically between 14.5 °C and 15.5 °C, since the energy needed shows a slight temperature dependence. Another commonly used unit is...
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Heating and Cooling Curves02:44

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When a substance—isolated from its environment—is subjected to heat changes, corresponding changes in temperature and phase of the substance is observed; this is graphically represented by heating and cooling curves.
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Heat Engines01:10

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A heat engine is a device used to extract heat from a source and then convert it into mechanical work used for various applications. For example, a steam engine on an old-style train can produce the work needed for driving the train.
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Updated: Feb 16, 2026

Author Spotlight: Polysome Profiling Protocol for Studying Translational Regulation in Arabidopsis Under Heat Stress
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Heat Stress in Atlanta.

Robert Roos

    The Physician and Sportsmedicine
    |December 26, 2017
    PubMed
    Summary

    Atlanta

    Area of Science:

    • Environmental Science
    • Sports Medicine
    • Olympic Athletics

    Background:

    • Endurance athletes face significant challenges during the Summer Olympic Games.
    • Previous summer games have not experienced the same level of heat stress.
    • Atlanta's weather poses a unique competitive threat to athletes.

    Purpose of the Study:

    • To report on expected weather conditions for the Atlanta Olympic Games.
    • To outline preparations by medical officials for anticipated heat stress.
    • To assess the impact of environmental factors on athletic performance.

    Main Methods:

    • Analysis of historical weather data for Atlanta.
    • Forecasting of heat stress levels during the Olympic period.
    • Review of medical preparedness strategies for heat-related illnesses.

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    Main Results:

    • Expected heat stress in Atlanta is higher than in recent Olympic Games.
    • Medical officials are implementing specific protocols to manage heat-related risks.
    • Environmental conditions present a major factor for athlete competition.

    Conclusions:

    • The weather in Atlanta presents an unprecedented challenge for endurance athletes.
    • Proactive medical planning is crucial for athlete safety and performance.
    • Understanding and mitigating heat stress is key to successful Olympic competition.