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1 femtometer (fm, fermi) 1 fm Approximate limit of the gluon-mediated color force between quarks [6] [7] 1.5 fm Effective cross section radius of an 11 MeV proton [8] 2.81794 fm Classical electron radius [9] 3 fm Approximate limit of the meson-mediated nuclear binding force [6] [7] 750 to 822.25 fm Longest wavelength of gamma rays: 10 −12: 1 ...
1000000 zeptometres = 1 femtometre = 1 fermi = 0.000001 nanometre = 10 −15 metres 1 000 000 000 000 femtometres = 1 millimetre . For example, the charge radius of a proton is approximately 0.841 femtometres [ 3 ] while the radius of a gold nucleus is approximately 8.45 femtometres.
60 bpm, common tempo in music 2 Hz: 120 bpm, common tempo in music ~7.83 Hz: Fundamental frequency of the Schumann resonances: 10 1: 10 hertz 10 Hz: Cyclic rate of a typical automobile engine at idle (equivalent to 600 rpm) 12 Hz: Acoustic – the lowest possible frequency that a human can hear [3] 18 Hz: Average house cat's purr 24 Hz
The femtometre, used mainly in particle physics, is sometimes called a fermi. For large scales, megametre, gigametre, and larger are rarely used. Instead, ad hoc non-metric units are used, such as the solar radius, astronomical units, light years, and parsecs; the astronomical unit is mentioned in the SI standards as an accepted non-SI unit.
Musical symbols are marks and symbols in musical notation that indicate various aspects of how a piece of music is to be performed. There are symbols to communicate information about many musical elements, including pitch, duration, dynamics, or articulation of musical notes; tempo, metre, form (e.g., whether sections are repeated), and details about specific playing techniques (e.g., which ...
Music theory analyzes the pitch, timing, and structure of music. It uses mathematics to study elements of music such as tempo, chord progression, form, and meter. The attempt to structure and communicate new ways of composing and hearing music has led to musical applications of set theory, abstract algebra and number theory.
femto-(fW) 2.5 × 10 −15: −116 dBm tech: minimum discernible signal at the antenna terminal of a good FM radio receiver 10 −14: 1 × 10 −14: −110 dBm tech: approximate lower limit of power reception on digital spread-spectrum cell phones 10 −12: pico-(pW) 1 × 10 −12: −90 dBm biomed: average power consumption of a human cell: 10 ...
An order of magnitude of time is usually a decimal prefix or decimal order-of-magnitude quantity together with a base unit of time, like a microsecond or a million years.In some cases, the order of magnitude may be implied (usually 1), like a "second" or "year".