Thermal Glossary

the amount of solar electromagnetic radiation received per unit area at a distance of one astronomical unit (AU) from the Sun.

an approximate value of 1361 watts per square meter. That's like a celestial shower of energy, bathing our planet in a constant flow of solar power. It's a remarkable reminder of the Sun's unwavering radiance.

one of the three fundamental states of matter, alongside liquids and gases. It's like the sturdy foundation upon which the physical world is built.

the amount of heat energy required to raise the temperature of one gram of a substance by one degree Celsius (or one Kelvin). It's like a quantifiable measure of a substance's thermal personality.

the total power radiated by an object is directly proportional to the fourth power of its absolute temperature. Mathematically, it can be expressed as P = σAT⁴, where P is the power radiated, σ is the Stefan-Boltzmann constant, A is the surface area of the object, and T is its absolute temperature.