Thermal radiation, also known as irradiation, is a form of heat transfer that occurs by means of electromagnetic waves. As these waves can propagate in a vacuum, there is no need for contact between the bodies for heat transfer. All bodies emit thermal radiation that is proportional to their temperature. The higher the temperature, the greater the amount of heat the object radiates. An example of this process is what happens when a house heats up when the curtains that cover the windows are open. Even without being in contact with the Sun, the house is heated by it
Conduction - touching hot pot Convection - oven cycling warm air Conduction - touching a warm coffee mug Heat from a fire - radiation Heat from the sun to solar panel - radiation Warm water rising - convection
It allows a scientist to understand the history of metamorphic rock by estimating the temperature, depth, and pressure at which a rock undergoes metamorphism.
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Matter has different densities. Different food colorings have different densities. Those with a higher density will sink to the bottom and mix much easier than one with a lower density. The higher density also contains more particles making it easier to mix or give it a fuller color.
