Absorption
Absorption is the process by which a substance takes in another substance. In the context of space and astronautical engineering, absorption is an important phenomenon in the study of radiation shielding. Radiation is a major hazard in space, and astronauts need to be protected from it. Absorption is one of the ways to shield against radiation. Materials with high atomic numbers, such as lead or tungsten, are effective at absorbing radiation. These materials are used in the construction of spacecraft and space habitats to protect astronauts from harmful radiation. Absorption is also important in the study of atmospheric entry. During re-entry, spacecraft experience high temperatures due to friction with the atmosphere. Materials with high absorption properties, such as ceramic tiles, are used to protect the spacecraft from the heat.
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