frames per second

(noun)

The number of times an imaging device produces unique consecutive images (frames) in one second. Abbreviation: FPS.

Related Terms

Examples of frames per second in the following topics:

  • Motion

    • Video is essentially the same process, but instead of using film, it is digitally-based with fewer frames per second.
    • The reason for the wagon wheel effect is that motion-picture cameras conventionally film at 24 frames per second.
    • Although the wheels of a vehicle are not likely to be turning at 24 revolutions per second (as that would be extremely fast), each wheel might have twelve spokes and rotate at only two revolutions per second.
    • Filmed at 24 frames per second, the spokes in each frame will appear in exactly the same position.
    • If the wheel rotates a little more slowly than two revolutions per second, the position of the spokes is seen to fall a little further behind in each successive frame and therefore the wheel will seem to be turning backwards.

  • Time and Motion

    • Video is essentially the same process, but digitally-based and with fewer frames per second.

  • Motion Diagrams

    • Notice that the puck covers the same distance per unit interval along the trajectory.
    • One major use of motion diagrams is the presentation of film through a series of frames taken by a camera; this is sometimes called stroboscopic technique (as seen in ).
    • As the frames are taken, we can assume that an object is at a constant rest if it occupies the same position over time.
    • The objects on the frame come very close together.
    • A bouncing ball captured with a stroboscopic flash at 25 images per second.

  • The Coriolois Force

    • The Coriolis effect is a deflection of moving objects when they are viewed in a rotating reference frame.
    • The Coriolis effect is a deflection of moving objects when they are viewed in a rotating reference frame.
    • It is proportional to the object's speed in the rotating frame.
    • Perhaps the most commonly encountered rotating reference frame is the Earth.
    • Because the Earth completes only one rotation per day, the Coriolis force is quite small.

  • Gallilean-Newtonian Relativity

    • An inertial frame is a reference frame in relative uniform motion to absolute space.
    • Consider two inertial frames S and S'.
    • By the second axiom above, one can synchronize the clock in the two frames and assume t = t'.
    • This transformation of variables between two inertial frames is called Galilean transformation .
    • Assuming that mass is invariant in all inertial frames, the above equation shows that Newton's laws of mechanics, if valid in one frame, must hold for all frames.

  • Observation: Framing the Problem

    • Their choices are influenced by their frames.
    • People only shift frames when incongruity calls for a frame shift.
    • In other words, people only become aware of the frames that they already use when something forces them to replace one frame with another.
    • The second group of participants was presented with the choice between the following: In a group of 600 people, Program C: "400 people will die" Program D: "there is a one-third probability that nobody will die, and a two-thirds probability that 600 people will die"
    • A shift toward risk-seeking behavior occurs when a decision maker frames decisions in negative terms or adopts a negative framing effect.

  • Sources of Social Change

    • Second, it attempts to address the free-rider problem.
    • In emphasizing the injustice frame, culture theory also addresses the free-rider problem.
    • Diagnostic frame: the movement organization frames the problem—what they are critiquing
    • Prognostic frame: the movement organization frames the desirable solution to the problem
    • Motivational frame: the movement organization frames a "call to arms" by suggesting and encouraging that people take action

  • Multi-Period Investment

    • There are two primary ways of determining how much an investment will be worth in the future if the time frame is more than one period.
    • Suppose you make a deposit of $100 in the bank and earn 5% interest per year.
    • That means you earn another $5 in the second year, and will earn $5 for every year of the investment.
    • At the end of the second year, you also earn 5%, but it's 5% of your balance, or $105.
    • You earn $5.25 in interest in the second year, bringing your balance to $110.25.

  • Relativistic Momentum

    • It also results in a prediction that the speed of light can vary from one reference frame to another.
    • Consider, for example, a reference frame moving relative to another at velocity v in the x direction.
    • The Galilean transformation gives the coordinates of the moving frame as
    • This means that the conservation law needs to hold in any frame of reference.
    • Newton's second law [with mass fixed in the expression for momentum (p=m*v)], is not invariant under a Lorentz transformation.

  • Problems

    • Draw Kara's ladder along Kara's $x$-axis.The ladder is 5 meters long in Kara's frame.How long is it in Emma's frame.
    • What is the four-velocity in this frame of the mirror on the left ($U_{l}^\mu$)?
    • What is the four-velocity in this frame of the mirror on the right ($U_{l}^r$)?
    • How long is ∆t in my frame and when do I receive the second photon?
    • What is the difference in time between when I receive the first and second photons?