Everything about Velocity
Speed and direction of a motion
Velocity is a measurement of speed in a certain direction of motion. It is a fundamental concept in kinematics, the branch of classical mechanics that describes the motion of physical objects. Velocity is a vector quantity, meaning that both magnitude and direction are needed to define it. The scalar absolute value (magnitude) of velocity is called speed, a quantity that is measured in metres per second in the SI system. For example, "5 metres per second" is a scalar, whereas "5 metres per second east" is a vector. If there is a change in speed, direction or both, then the object is said to be undergoing an acceleration. Wikipedia →
🧭 Start here: a 6-step reading path
- Read the overview: VelocityA 5-minute orientation
- Skim a recent paper: Ice velocity and thickness of the world’s glaciersInfluential work since 2022
- Pick up a classic book: McDonald's blood flow in arteriesThe most-reprinted book on the subject
- Read the landmark paper: Canonical sampling through velocity rescalingCited 18,338 times
- Go sideways: AccelerationA closely related topic
- Go sideways: KinematicsA closely related topic
📖 Definitions
Noun A vector quantity that denotes the rate of change of position with respect to time, combining speed with a directional component.
Noun A rapidity of motion.
Noun The rate of occurrence.
Noun The number of times that an average unit of currency is spent during a specific period of time.
🗂️ The subject at a glance
🏆 Landmark papers (most cited)
Canonical sampling through velocity rescaling
RNA velocity of single cells
Subgrid-Scale Stress Modelling Based on the Square of the Velocity Gradient Tensor
Size-Distribution Analysis of Macromolecules by Sedimentation Velocity Ultracentrifugation and Lamm Equation Modeling
MAKING FAST STRATEGIC DECISIONS IN HIGH-VELOCITY ENVIRONMENTS.
A Relationship between Nuclear Black Hole Mass and Galaxy Velocity Dispersion
Generalizing RNA velocity to transient cell states through dynamical modeling
Rattle: A “velocity” version of the shake algorithm for molecular dynamics calculations
🆕 Influential since 2022
Ice velocity and thickness of the world’s glaciers
Measurement of the laminar burning velocity and kinetics study of the importance of the hydrogen recovery mechanism of ammonia/hydrogen/air premixed flames
RNA velocity unraveled
Dense velocity reconstruction from particle image velocimetry/particle tracking velocimetry using a physics-informed neural network
Laminar burning velocity, Markstein length, and cellular instability of spherically propagating NH3/H2/Air premixed flames at moderate pressures
📚 Books worth reading
McDonald's blood flow in arteriesWilmer W. Nichols, Michael F. O'Rourke · 1990
A Manual of the Mechanics of Engineering and of the Construction of MachinesJulius Wiesbach , Julius Ludwig Weisbach · 1878- 📕A 3-component laser-doppler velocimeter data acquisition and reduction systemL. C. Rodman · 1985
- 📕The velocity of moneyGeorge Garvy · 1969
- 📕Steady-state flow distribution and monthly flow duration in selected branches of St. Clair and Detroit Rivers within the Great Lakes WaterwayDavid J. Holtschlag · 2001
Blood flow in arteriesDonald A. McDonald · 1960- 📕Discharge-measurement system using an acoustic Doppler current profiler with applications to large rivers and estuariesMichael R. Simpson · 1992
- 📕Streamflow and cross-section data for the Tombigbee River between Aliceville and Gainesville locks and damsW. L. Psinakis · 1987
Ranked by number of editions on Open Library, a rough measure of how lasting a book is.
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