Heat is primarily transferred in liquids and gases by convection. Convection involves the movement of fluid particles, carrying heat as they circulate. While conduction can occur to some extent, it is less efficient, and radiation plays a minor role.
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The unit of heat is Degree Celsius. Degree Celsius is a unit of temperature, not heat. The other options (Calorie, Kilocalorie, Joule) are units used to measure heat or energy, while Degree Celsius measures temperature.
The SI unit of temperature is the kelvin (K). It is defined based on the triple point of water, where water exists in equilibrium as a solid, liquid, and vapor. The kelvin scale is an absolute temperature scale, with 0 ...
The reason for the temperature of water at the bottom of the waterfall being higher is – The kinetic energy of falling water is converted into heat. As water falls, its kinetic energy transforms into thermal energy due to friction ...
Camels feel relief from the desert heat by increasing their body temperature to 42°C. This allows them to conserve water by reducing sweating and water loss. Camels also have adaptations like fat storage in humps, long legs, and thick fur ...
By increasing the pressure on ice, its melting point will increase. Pressure affects the equilibrium between solid and liquid phases. As pressure rises, the equilibrium shifts towards the more compact solid phase, requiring a higher temperature to maintain equilibrium, resulting ...
Gas thermometers are more sensitive than liquid thermometers because gases has higher coefficient of expansion. Gas molecules expand more readily in response to temperature changes compared to liquids, leading to more significant changes in volume for a given temperature change. ...
Thermo Couple Thermometer is based on Seebeck’s effect. This principle states that when two dissimilar metals are joined at two junctions and one junction is at a different temperature, an electromotive force (EMF) is generated, creating a voltage that is ...
Very high temperatures are measured by Absolute radiation thermometer. Absolute radiation thermometers, also known as pyrometers, measure temperatures based on the intensity of thermal radiation emitted by an object. They are suitable for measuring extremely high temperatures, such as those ...
Total Radiation Pyrometer is based on Stephen’s law. This principle states that the total radiant flux emitted by a black body is proportional to the fourth power of its absolute temperature. Total Radiation Pyrometers utilize this law to measure temperature ...