Browse terms - alphabetical

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Term Definition Contributor Modified
Kansa Indians No definition provided Christopher Rauch 2023.12.01
Kansas-Nebraska bill No definition provided Christopher Rauch 2023.12.01
Kanzelhoehe_Solar_Observatory No definition provided Ryan McGranaghan 2023.04.16
KANZ__HALPH No definition provided Ryan McGranaghan 2023.04.16
Kaolin No definition provided Christopher Rauch 2023.12.01
Kaolinite No definition provided Ryan McGranaghan 2023.04.16
Kapellasite No definition provided Ryan McGranaghan 2023.04.16
Kapitsaite (Y) No definition provided Ryan McGranaghan 2023.04.16
kaplan sst index No definition provided Ryan McGranaghan 2023.04.16
Kappa mechanism A process based on the effects of opacity (κ) that drives the pulsations of many types of variable stars. Consider a layer of material within a star and suppose that it undergoes inward contraction. T his inward motion tends to compress the layer and increase the density. Therefore the layer becomes more opaque. If a certain amount of flux comes from the deeper layers it gets stuck in the high κ region. The energy accumulates and heat builds up beneath it. The pressure rises below the layer, pushing it outward. The layer expands as it moves outward, cools and becomes more transparent to radiation. Energy can now escape from below the layer, and pressure beneath the layer diminishes. The layer falls inward and the cycle repeats. The κ mechanism is believed to account for the pulsations of several star families, including Delta Scuti stars, Beta Cephei variables, Cepheids, and RR Lyrae stars. Ryan McGranaghan 2023.04.16
Kapteyn Selected Areas No definition provided Ryan McGranaghan 2023.04.16
Kapustinite No definition provided Ryan McGranaghan 2023.04.16
karaburan A violent northeast wind of Central Asia occurring during spring and summer. Ryan McGranaghan 2023.04.16
Karagassian language No definition provided Christopher Rauch 2023.12.01
Karaite manuscripts No definition provided Christopher Rauch 2023.12.01
karajol On the Bulgarian coast, a west wind that usually follows rain and persists for one to three days. Ryan McGranaghan 2023.04.16
Karankawa Indians No definition provided Christopher Rauch 2023.12.01
Karankawan Indians No definition provided Christopher Rauch 2023.12.01
Karasugite No definition provided Ryan McGranaghan 2023.04.16
Karchevskyite No definition provided Ryan McGranaghan 2023.04.16
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