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Related Concept Videos

Buoyancy01:12

Buoyancy

When an object is placed in a fluid, it either floats or sinks. All objects in a fluid experience a buoyant force. For example, a metal ball sinks, while a rubber ball floats. Similarly, a submarine can sink and float by adjusting its buoyancy.  The concept of buoyancy raises several interesting questions. For instance, where does this buoyant force come from? How much buoyant force is required to make an object sink or float? Do objects that sink get any support at all from the fluid? 
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Altered States of Awareness01:06

Altered States of Awareness

Altered states of consciousness represent significant deviations from one's normal mental state. These deviations can range from subtle changes in awareness to profound transformations in perception, thought processes, and sensory experiences. Altered states of consciousness can be triggered by various factors, including drug use, meditation, hypnosis, illness, or even intense fatigue.
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Free-falling Bodies: Example01:05

Free-falling Bodies: Example

An object falling without any air resistance under the influence of gravitational force is said to be in free-fall. For free-falling bodies, the acceleration due to gravity is constant, irrespective of their mass. Free-fall is experienced not only by objects falling downward, but also by all objects whose motion is influenced by gravitational force alone. The dynamics of free-fall motion can be calculated using kinematic equations of motion, since free-fall acceleration is constant.
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Free-falling Bodies: Introduction01:07

Free-falling Bodies: Introduction

All objects, neglecting air resistance, fall with the same acceleration towards the Earth's center due to the force exerted by the Earth's gravity. This experimentally determined fact is unexpected because we are so accustomed to the effects of air resistance and friction that we expect light objects to fall slower than heavier ones. People believed that a heavier object had a greater acceleration when falling until Galileo Galilei (1564–1642) proved otherwise. We now know this is not the case.
Weightlessness01:01

Weightlessness

When an object is dropped, it accelerates toward the center of the Earth. If the net external force on the object is its weight, it is said to be in free fall; that is, the only force acting on the object is gravity. Galileo was instrumental in showing that, in the absence of air resistance, all objects fall with the same acceleration g. However, when objects on the Earth fall downward, they are never truly in free fall, because there is always some upward resistance force from the air acting...
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Self-esteem, a core aspect of psychological well-being, reflects an individual's positive and negative self-evaluation in terms of worth, competence, and overall value. It is both a stable trait and a dynamic process, influenced by experiences and social interactions across the lifespan. While global self-esteem offers a general assessment, research highlights that self-esteem is multidimensional and varies across specific life domains.Domain-Specific Self-EsteemResearchers have delineated...

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Updated: Jun 14, 2026

Religious Chanting and Self-Related Brain Regions: A Multi-Modal Neuroimaging Study
05:05

Religious Chanting and Self-Related Brain Regions: A Multi-Modal Neuroimaging Study

Published on: May 31, 2024

Our soaring spirit.

G F Will

    Applied Optics
    |March 25, 2010
    PubMed
    Summary
    This summary is machine-generated.

    This editorial highlights the importance of advocating for science. It celebrates efforts to promote scientific understanding and its value in society.

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    Area of Science:

    • Science advocacy
    • Public understanding of science

    Background:

    • The editorial reflects on the need for science communication.
    • It addresses the role of media in science promotion.

    Purpose of the Study:

    • To emphasize the critical importance of championing scientific endeavors.
    • To encourage continued support for science and research.

    Main Methods:

    • This piece is an opinion editorial, not a research study.
    • It uses persuasive language to advocate for science.

    Main Results:

    • The editorial expresses appreciation for science advocacy.
    • It suggests a positive reception to efforts promoting science.

    Conclusions:

    • Continued advocacy for science is crucial for societal progress.
    • Public support for science remains a vital concern.