joule
joule
energian SI-järjestelmän mukainen yksikkö (tunnus J)
Liittyvät sanat: tsettajoule
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Synonyymisanakirja: joule
joule
Joule, James Prescott Joule, J, wattisekunti.
Riimisanakirja: joule
joule rimmaa näiden kanssa:
megajoule, terajoule, kilojoule...
Käännökset: joule
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joule
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Joule
In the International System of Units, the derived unit of energy, work and heat; the work required to exert a force of one newton for a distance of one metre. Also equal to the energy of one watt of power for a duration of one second. Symbol: J
The Greisen–Zatsepin–Kuzmin limit (GZK limit) is a theoretical upper limit on the energy of cosmic rays (high energy charged particles from space) coming from "distant" sources. The limit is 5×1019 eV, or about 8 joules. The limit is set by slowing-interactions of cosmic ray protons with the microwave background radiation over long distances (~163 million light-years). The limit is at the same order of magnitude as the upper limit for energy at which cosmic rays have experimentally been detected. For example, one ultra-high-energy cosmic ray has been detected which appeared to possess a record 50 joules (312 million TeV) of energy (about the same as a 60 mph baseball).(w)
English joule (gloss)
English joule
English joule (unit of measure)
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