The specific heat of an object depends on the material composition of the object. It is a property inherent to the substance, indicating the amount of heat required to change the temperature of a unit mass by one degree Celsius.
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Wearing white clothes in summer is comfortable because white reflects most of the sunlight, reducing heat absorption. This reflection minimizes the heat retained by the clothes, keeping the body cooler.
The outer part of the bottom of cooking utensils is often left black because black surfaces are excellent absorbers of heat. This allows the utensil to absorb more heat from the stove efficiently, leading to quicker and more even cooking.
A white and smooth surface is a poor absorber of heat and a good reflector. It reflects most of the incoming light and heat, minimizing absorption and thus remaining cooler.
Air conditioners control both temperature and humidity, air coolers primarily cool the air through evaporation and do not effectively control humidity.
A thermometer suitable for measuring 2000 °C is a total radiation pyrometer. These devices are designed to measure extremely high temperatures by detecting the thermal radiation emitted by an object, making them ideal for temperatures far beyond the range of ...
When sealed biscuits are kept inside the refrigerator, they become crispy because the humidity inside the refrigerator is generally low, which helps absorb excess moisture from the biscuits. This drying effect restores their crispiness.
In winter, two thin shirts provide more comfort than one thick shirt because the layer of air trapped between the two shirts acts as an insulating medium. This air layer reduces heat loss from the body, keeping it warmer.
Water has a higher heat capacity compared to a piece of iron, gold, or benzene. This means water can absorb more heat before its temperature rises significantly, making it an effective coolant and thermal buffer.
The reason a glass of water does not change into ice at 0°C is that to freeze the water, some amount of heat must be removed from it. Freezing occurs when water loses heat energy, causing its temperature to drop ...