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One hundredth of one second 1.6667 cs: The period of a frame at a frame rate of 60 Hz. 2 cs: The cycle time for European 50 Hz AC electricity 10–20 cs (=0.1–0.2 s): The human reflex response to visual stimuli 10 −1: decisecond ds One tenth of a second 1–4 ds (=0.1–0.4 s): The length of a single blink of an eye [14]
Femtosecond. A femtosecond is a unit of time in the International System of Units (SI) equal to 10 −15 or ⁄1 000 000 000 000 000 of a second; that is, one quadrillionth, or one millionth of one billionth, of a second. [ 1] For context, a femtosecond is to a second as a second is to about 31.71 million years; a ray of light travels ...
1.7×10 −21 J. 1 kJ/mol, converted to energy per molecule [9] 2.1×10 −21 J. Thermal energy in each degree of freedom of a molecule at 25 °C ( kT /2) (0.01 eV) [10] 2.856×10 −21 J. By Landauer's principle, the minimum amount of energy required at 25 °C to change one bit of information. 3–7×10 −21 J.
In signal processing, the Nyquist rate, named after Harry Nyquist, is a value equal to twice the highest frequency ( bandwidth) of a given function or signal. It has units of samples per unit time, conventionally expressed as samples per second, or hertz (Hz). [ 1] When the signal is sampled at a higher sample rate (see § Critical frequency ...
also called the magnetic field density or magnetic induction tesla (T), or equivalently, weber per square meter (Wb/m 2) capacitance: farad (F) heat capacity: joule per kelvin (J⋅K −1) constant of integration: varied depending on context speed of light (in vacuum) 299,792,458 meters per second (m/s) speed of sound
Power of 10. Visualisation of powers of 10 from one to 1 trillion. A power of 10 is any of the integer powers of the number ten; in other words, ten multiplied by itself a certain number of times (when the power is a positive integer). By definition, the number one is a power (the zeroth power) of ten. The first few non-negative powers of ten are:
For example, in imperial units, the speed of light is approximately 186 282 miles per second, [Note 4] or roughly 1 foot per nanosecond. [Note 5] [15] [16] In branches of physics in which c appears often, such as in relativity, it is common to use systems of natural units of measurement or the geometrized unit system where c = 1.
3.2808. The metre per second is the unit of both speed (a scalar quantity) and velocity (a vector quantity, which has direction and magnitude) in the International System of Units (SI), equal to the speed of a body covering a distance of one metre in a time of one second. According to the definition of metre, [ 1] 1 m/s is exactly of the speed ...