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Related Concept Videos

Damped Oscillations01:07

Damped Oscillations

In the real world, oscillations seldom follow true simple harmonic motion. A system that continues its motion indefinitely without losing its amplitude is termed undamped. However, friction of some sort usually dampens the motion, so it fades away or needs more force to continue. For example, a guitar string stops oscillating a few seconds after being plucked. Similarly, one must continually push a swing to keep a child swinging on a playground.
Although friction and other non-conservative...
Forced Oscillations01:06

Forced Oscillations

When an oscillator is forced with a periodic driving force, the motion may seem chaotic. The motions of such oscillators are known as transients. After the transients die out, the oscillator reaches a steady state, where the motion is periodic, and the displacement is determined.
Types of Damping01:20

Types of Damping

If the amount of damping in a system is gradually increased, the period and frequency start to become affected because damping opposes, and hence slows, the back and forth motion (the net force is smaller in both directions). If there is a very large amount of damping, the system does not even oscillate; instead, it slowly moves toward equilibrium. In brief, an overdamped system moves slowly towards equilibrium, whereas an underdamped system moves quickly to equilibrium but will oscillate about...
Simple Harmonic Motion01:21

Simple Harmonic Motion

Simple harmonic motion is the name given to oscillatory motion for a system where the net force can be described by Hooke's law. If the net force can be described by Hooke's law and there is no damping (by friction or other non-conservative forces), then a simple harmonic oscillator will oscillate with equal displacement on either side of the equilibrium position. To derive an equation for period and frequency, the equation of motion is used. The period of a simple harmonic oscillator is given...
Oscillations about an Equilibrium Position01:04

Oscillations about an Equilibrium Position

Stability is an important concept in oscillation. If an equilibrium point is stable, a slight disturbance of an object that is initially at the stable equilibrium point will cause the object to oscillate around that point. For an unstable equilibrium point, if the object is disturbed slightly, it will not return to the equilibrium point. There are three conditions for equilibrium points—stable, unstable, and half-stable. A half-stable equilibrium point is also unstable, but is named so because...
Torsional Pendulum01:09

Torsional Pendulum

A torsional pendulum involves the oscillation of a rigid body in which the restoring force is provided by the torsion in the string from which the rigid body is suspended. Ideally, the string should be massless; practically, its mass is much smaller than the rigid body's mass and is neglected.
As long as the rigid body's angular displacement is small, its oscillation can be modeled as a linear angular oscillation. The amplitude of the oscillation is an angle. The role of mass is played by the...

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A Microfluidics Approach for the Functional Investigation of Signaling Oscillations Governing Somitogenesis
08:06

A Microfluidics Approach for the Functional Investigation of Signaling Oscillations Governing Somitogenesis

Published on: March 19, 2021

Spontaneous mechanical oscillations: implications for developing organisms.

Karsten Kruse1, Daniel Riveline

  • 1Theoretical Physics, Saarland University, SaarbrĂĽcken, Germany.

Current Topics in Developmental Biology
|April 20, 2011
PubMed
Summary
This summary is machine-generated.

The physics of living matter reveals how mechanical forces, not just genes, drive embryonic development. Understanding spontaneous oscillations and material properties offers new insights into developmental processes.

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Area of Science:

  • Physics of living matter
  • Developmental biology
  • Biophysics

Background:

  • Embryonic development traditionally focuses on genetic and protein regulation.
  • The mechanical properties of cellular matter and tissues are often overlooked.
  • The physics of living matter explores active material properties like stress generation.

Purpose of the Study:

  • To introduce basic concepts of spontaneous mechanical oscillations in living matter.
  • To illustrate the application of these physical concepts to embryonic development.
  • To highlight the role of state diagrams in quantitatively analyzing developmental physics.

Main Methods:

  • Discussion of spontaneous mechanical oscillations.
  • Application of physics of living matter principles to developing embryos.
  • Utilizing state diagrams for quantitative analysis.

Main Results:

  • Spontaneous mechanical oscillations are fundamental to understanding the physics of living matter.
  • These physical principles have direct implications for embryonic development.
  • State diagrams provide a quantitative framework to assess physical concepts in development.

Conclusions:

  • Mechanical properties of living matter play a crucial role in embryonic development.
  • The physics of living matter offers a new perspective beyond traditional genetic models.
  • Quantitative analysis using state diagrams is key to understanding developmental physics.