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  2. Growing degree-day - Wikipedia

    en.wikipedia.org/wiki/Growing_degree-day

    Growing degree days (GDD), also called growing degree units (GDUs), are a heuristic tool in phenology.GDD are a measure of heat accumulation used by horticulturists, gardeners, and farmers to predict plant and animal development rates such as the date that a flower will bloom, an insect will emerge from dormancy, or a crop will reach maturity.

  3. Soil thermal properties - Wikipedia

    en.wikipedia.org/wiki/Soil_thermal_properties

    The single probe method employs a heat source inserted into the soil whereby heat energy is applied continuously at a given rate. The thermal properties of the soil can be determined by analysing the temperature response adjacent to the heat source via a thermal sensor. This method reflects the rate at which heat is conducted away from the probe.

  4. How to measure heat correctly, according to scientists, and ...

    www.aol.com/measure-heat-correctly-according...

    In the sun, in the shade, on a rock, in a glade. For every different way there is to experience heat — in the sun, in the shade, on a rock, in a glade — there is a scientific debate about how ...

  5. Physical properties of soil - Wikipedia

    en.wikipedia.org/wiki/Physical_properties_of_soil

    The specific heat of pure water is ~ 1 calorie per gram, the specific heat of dry soil is ~ 0.2 calories per gram, hence, the specific heat of wet soil is ~ 0.2 to 1 calories per gram (0.8 to 4.2 kJ per kilogram). [90] Also, a tremendous energy (~584 cal/g or 2442 kJ/kg at 25 °C) is required to evaporate water (known as the heat of ...

  6. What is the heat index? Explaining how it’s calculated and ...

    www.aol.com/heat-index-explaining-calculated-4...

    Lighter Side. Medicare. new

  7. What is a heat index? We define terminology commonly used by ...

    www.aol.com/news/heat-index-define-terminology...

    Lighter Side. Medicare. News

  8. Scoville scale - Wikipedia

    en.wikipedia.org/wiki/Scoville_scale

    The standard used to calibrate the calculation is 1 gram of capsaicin. Scoville heat units are found by multiplying the ppmH value by a factor of 15. [5] [a] By this definition of ppmH, spicy compounds other than the two most important capsaicinoids are ignored, despite the ability of HPLC to measure these other compounds at the same time. [5]

  9. What does heat index mean and why is it important in ... - AOL

    www.aol.com/does-heat-index-mean-why-145452376.html

    The HeatRisk map for the United States on June 17, 2024. The measure takes into account several factors including heat, air quality, and how unusual the temperature is for the location at this ...