Radiation is the transfer of energy through electromagnetic waves without requiring a medium. It occurs in all objects emitting heat, with hotter bodies radiating more energy. Examples include sunlight warming Earth and heat emitted by a fire. Radiation plays a ...
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A sphere is a three-dimensional geometric shape with all points on its surface equidistant from its center. It has symmetry and no edges or vertices. The volume and surface area of a sphere are determined by its radius. Examples include ...
Power in physics is the rate at which work is done or energy is transferred over time. It measures how quickly energy is used or converted, calculated as work done divided by time. The standard unit is the watt (W), ...
A furnace is a device used for heating or melting materials at high temperatures. It is commonly used in industrial processes like metal smelting, glass production, or for heating in buildings. Furnaces operate by burning fuel or using electrical energy ...
A ratio is a mathematical relationship between two numbers that shows how many times the first number contains the second. It is expressed in the form of “a to b” or a:b. Ratios are used to compare quantities, such as ...