While there are several broad categories of causes of diaper rash, contact irritation is the most common culprit. While diaper rash is generally thought to affect infants and toddlers, any individual wearing a diaper (for example, an incontinent adult) is a candidate to develop this dermatitis.
One calorie is the amount of heat required to raise the temperature of one gram of water by one degree Celsius. As such calorie is a very small unit hence larger unit Kilocalories or Kcal is more commonly used. 1Kcal = 1000 cal. 2) SI unit system: Joule: This system is most commonly used now.
to answer the 2nd part. the scientific unit for measure of temperature is Kelvin (K), which starts at 0 (also known as absolute zero, or the lowest temperature possible). 1 unit of Kelvin = 1 unit of Celcius. So to convert a temperature from Kelvin to celcius, add 273.6, so 0 degrees celcius would equal 273.6 Kelvin. Now what is important to understand about temperature is that there is only HEAT (unit measured in Joules), there is nothing called COLDNESS etc.. so any temperature above absolute zero means that there is some amount of heat (Joules) present.