Thermal Glossary

like a cosmic fingerprint, unique to each element or compound that emits light. It's a visual representation of the specific wavelengths of light emitted when electrons in atoms or molecules transition from higher energy states to lower energy states.

quantified using wavelengths, which are measured in units of length, such as nanometers or angstroms. It's like a cosmic ruler, allowing us to pinpoint the exact colors of light emitted by different elements.

 how efficiently a material emits or absorbs thermal radiation. It's a measure of how well a material can radiate heat compared to a perfect black body, which is an idealized object that absorbs and emits all radiation.

a dimensionless quantity that ranges from 0 to 1. 0 would be a perfect reflector, 1 would be a perfect emitter, just like a black body.

refers to the additional warming effect caused by human activities, particularly the increased emission of greenhouse gases into the atmosphere.