General science

General science

A variety of science subjects concerning the fundamental knowledge about different aspects of our world and their underlying principles.

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General science

Cryptophyceae

Science; General science

A small class of biflagellate unicellular algae (cryptomonads) in the chlorophyll a–c phyletic line (Chromophycota). In protozoological classification, these organisms constitute an order, ...

A small and distinctive order of valvatacean Asteroidea with long, straight-sided arms and relatively small disks. The skeleton is differentiated into marginals, actinals, and abactinals, and there ...

Prasinophyceae

Science; General science

A small class of mostly motile, photosynthetic, unicellular algae in the chlorophyll a - b phyletic line (Chlorophycota). It is segregated from the Chlorophyceae primarily on the basis of ...

Precession of equinoxes

Science; General science

A slow change in the direction of the axis of rotation of the Earth, and also a very small change in the orientation of the Earth's orbit around the Sun. Thus, both the celestial equator (the ...

Harmonic (periodic phenomena)

Science; General science

A sinusoidal quantity having a frequency that is an integral multiple of the frequency of a periodic quantity to which it is related.

Paleosol

Science; General science

A soil of the past, that is, a fossil soil. Paleosols are most easily recognised when they are buried by sediments. They also include surface profiles that are thought to have formed under very ...

Electret

Science; General science

A solid dielectric with a quasipermanent electric moment. Electrets may be classified as real-charge electrets and dipolar-charge electrets. Real-charge electrets of present importance are either ...