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  2. Limit cycle - Wikipedia

    en.wikipedia.org/wiki/Limit_cycle

    Stable limit cycle (shown in bold) and two other trajectories spiraling into it Stable limit cycle (shown in bold) for the Van der Pol oscillator. In mathematics, in the study of dynamical systems with two-dimensional phase space, a limit cycle is a closed trajectory in phase space having the property that at least one other trajectory spirals into it either as time approaches infinity or as ...

  3. Unit of time - Wikipedia

    en.wikipedia.org/wiki/Unit_of_time

    A unit of time is any particular time interval, used as a standard way of measuring or expressing duration. The base unit of time in the International System of Units (SI), and by extension most of the Western world , is the second , defined as about 9 billion oscillations of the caesium atom.

  4. Nyquist frequency - Wikipedia

    en.wikipedia.org/wiki/Nyquist_frequency

    For a given sampling rate (samples per second), the Nyquist frequency (cycles per second) is the frequency whose cycle-length (or period) is twice the interval between samples, thus 0.5 cycle/sample. For example, audio CDs have a sampling rate of 44100 samples/second. At 0.5 cycle/sample, the corresponding Nyquist frequency is 22050 cycles/second .

  5. Periodic function - Wikipedia

    en.wikipedia.org/wiki/Periodic_function

    A periodic function, also called a periodic waveform (or simply periodic wave), is a function that repeats its values at regular intervals or periods. The repeatable part of the function or waveform is called a cycle. [1] For example, the trigonometric functions, which repeat at intervals of radians, are

  6. Orders of magnitude (time) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(time)

    One billionth of one second 1 ns: The time needed to execute one machine cycle by a 1 GHz microprocessor 1 ns: The time light takes to travel 30 cm (11.811 in) 10 −6: microsecond: μs One millionth of one second 1 μs: The time needed to execute one machine cycle by an Intel 80186 microprocessor 2.2 μs: The lifetime of a muon

  7. Apartment Building's Security Dachshund Escorts Woman Home ...

    www.aol.com/apartment-buildings-security...

    It's like real-life 'Paw Patrol!' Many dogs feel their best when they have a have a job to do, whether it's a quick task or an all day undertaking.

  8. Man Told Girlfriend He Was Going Home for Dinner, Then Killed ...

    www.aol.com/man-told-girlfriend-going-home...

    An affidavit previously obtained by the local news stations stated that Jacob left his girlfriend's house, saying he was going to have dinner with his family.

  9. Phase (waves) - Wikipedia

    en.wikipedia.org/wiki/Phase_(waves)

    That is, the sum and difference of two phases (in degrees) should be computed by the formulas [[+]] [[]] respectively. Thus, for example, the sum of phase angles 190° + 200° is 30° ( 190 + 200 = 390 , minus one full turn), and subtracting 50° from 30° gives a phase of 340° ( 30 − 50 = −20 , plus one full turn).