1. Reduction of cephalic absorption of radiation from mobile communication devices

2. Ground-based molecular line searches are ultimately limited by absorption of radiation in the Earth's atmosphere.

3. It includes the study of the chemical effects resulting from the absorption of radiation within living animals, plants, and other materials.

4. Absorption spectroscopy refers to spectroscopic techniques that measure the Absorption of radiation, as a function of frequency or wavelength, due to its interaction with a sample.The sample absorbs energy, i.e., photons, from the radiating field