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General physics
Terms realting to physics that are not fit for other subcategories.
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General physics
achromatic
Physics; General physics
capable of transmitting light without decomposing it into its constituent colors.
acoustics
Physics; General physics
The science of the production, transmission and effects of sound.
acoustic shielding
Physics; General physics
A sound barrier that prevents the transmission of acoustic energy.
afocal lens
Physics; General physics
A lens of zero convergent power, whose focal points are infinitely distant.
albedo
Physics; General physics
The fraction of the total light incident on a reflecting surface, especially a celestial body, which is reflected back in all directions.
alpha particle
Physics; General physics
The nucleus of a helium atom (two protons and two neutrons) emitted as radiation from a decaying heavy nucleus.