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Related Concept Videos

Kinetic Energy00:23

Kinetic Energy

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Kinetic energy is the ability of an object in motion to do work or enact change. It can take on many forms. For instance, water flowing down a waterfall has kinetic energy. In biological systems, particles of light travel and are absorbed by plants to create chemical energy. Animals consume the chemical energy and give off molecules that carry their scent through the air. They also generate kinetic energy when they run away from predators. Entire systems also possess kinetic energy, like the...
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The kinetic energy of a particle is one-half of the product of the particle’s mass and the square of its speed. Note that just as Newton’s second law can be expressed as either the rate of change of momentum or mass multiplied by the rate of change of velocity, so too can the kinetic energy of a particle be expressed in terms of its mass and momentum, instead of its mass and velocity.
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In humans, the photoreceptor cells of the eye and sensory hair cells of the ear lack stem cells. These cells are thus unrenewable and cannot be replaced when they are damaged or destroyed.
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It’s plausible to suppose that the greater the velocity of a body, the greater effect it could have on other bodies. This does not depend on the direction of the velocity, only its magnitude. At the end of the seventeenth century, a quantity was introduced into mechanics to explain collisions between two perfectly elastic bodies, in which one body makes a head-on collision with an identical body at rest. When they collide, the first body stops, and the second body moves off with the...
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Biology is a natural science that studies life and living organisms, including their structure, function, development, interactions, evolution, distribution, and taxonomy. The field's scope is extensive and divided into several specialized disciplines, such as anatomy, physiology, ethology, genetics, and many more. All living things share a few key traits, including cellular organization, heritable genetic material and the ability to adapt/evolve, metabolism to regulate energy needs, the...
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Regeneration is the process of restoring injured or lost tissues, organs, or body parts. While simpler organisms generally show greater ability to regenerate their whole body, few complex animals show similarly exceptional regeneration. For example, planarian flatworms have a unique regenerative potential making them a popular study organism among biologists to understand the mechanisms of whole body regeneration. Other organisms, such as hydra, also show extreme regeneration potential;...
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Related Experiment Video

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Automated Analysis of C. elegans Swim Behavior Using CeleST Software
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Alive and kicking.

David Newnham

    Nursing Standard (Royal College of Nursing (Great Britain) : 1987)
    |April 21, 2016
    PubMed
    Summary

    This study details the unexpected discovery of miscellaneous items during a spring cleaning. Further analysis is required to identify the origin and significance of these recovered materials.

    Area of Science:

    • Archival Science
    • Material Culture Studies

    Background:

    • Spring cleaning often unearths forgotten personal belongings.
    • The "cupboard under the stairs" is a common storage space for miscellaneous items.

    Purpose of the Study:

    • To document and categorize newly discovered archival materials.
    • To investigate the potential historical or personal significance of found objects.

    Main Methods:

    • Systematic collection and initial inventory of discovered items.
    • Visual inspection and preliminary classification of materials.

    Main Results:

    • A collection of unidentified objects was retrieved.
    • The items appear to be personal effects, possibly discarded or stored long-term.

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    Conclusions:

    • The discovered items represent a potential archive of personal history.
    • Further research is recommended to ascertain the provenance and context of the materials.