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Related Concept Videos

Compass01:23

Compass

The compass is a fundamental instrument that operates by aligning its magnetic needle with Earth's magnetic field. This alignment facilitates navigation and orientation, offering a means to determine direction relative to magnetic north. However, the magnetic needle points to magnetic north, which differs slightly from true geographic north due to magnetic declination, which is the angular deviation between these two points. Declination varies based on geographic location and shifts over time...
Design Example: Marking Boundaries of a Site Using a Compass01:12

Design Example: Marking Boundaries of a Site Using a Compass

Marking site boundaries using a compass is a precise surveying technique that ensures the accuracy of boundary delineation. The process begins by using provided site details, including the bearings and lengths of each boundary line. The initial step involves calculating latitudes and departures for all sides of the site. This computation verifies that the traverse is free of errors, ensuring a closed and accurate boundary.The process starts at a known point, such as Point A, which is often...
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Electro-mechanical Systems

Electromechanical systems are intricate configurations that effectively combine electrical and mechanical elements to achieve a desired outcome. Central to many of these systems is the DC motor, a device that converts electrical energy into mechanical motion, enabling various applications ranging from simple fans to complex robotic mechanisms.
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Conservation of Mechanical Energy01:05

Conservation of Mechanical Energy

The mechanical energy E of a system is the sum of its potential energy U and the kinetic energy K of the objects within it. What happens to this mechanical energy when only conservative forces cause energy transfers within the system—that is, when frictional and drag forces do not act on the objects in the system? Also assume that the system is isolated from its environment; in other words no external force from an object outside the system causes energy changes inside the system.
When a...
Mechanical Systems01:22

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Mechanical systems are analogous to to electrical networks where springs and masses play similar roles to inductors and capacitors, respectively. A viscous damper in mechanical systems functions similarly to a resistor in electrical networks, dissipating energy. The forces acting on a mass in such systems include an applied force in the direction of motion, counteracted by forces from the spring, a viscous damper, and the mass's acceleration. This interplay of forces is mathematically described...
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Meridians

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A Protocol for Bioinspired Design: A Ground Sampler Based on Sea Urchin Jaws
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Published on: April 24, 2016

An ecological compass for planetary engineering.

Jacob Haqq-Misra1

  • 1Blue Marble Space Institute of Science, Seattle, WA 98145, USA. jacob@bmsis.org

Astrobiology
|October 4, 2012
PubMed
Summary
This summary is machine-generated.

Geoengineering and terraforming raise ethical questions about altering planets. This study develops a framework to analyze the environmental ethics of planetary engineering, considering intrinsic and instrumental values.

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Area of Science:

  • Environmental Ethics
  • Planetary Science
  • Geoengineering

Background:

  • Global warming necessitates geoengineering proposals, raising ethical concerns.
  • Terraforming Mars and Venus for habitability also involves planetary engineering ethics.
  • Existing ethical frameworks lack tools to compare diverse planetary engineering scenarios.

Purpose of the Study:

  • To develop a comparative tool for analyzing ethical frameworks in planetary engineering.
  • To address the ethical questions surrounding geoengineering on Earth and terraforming on other planets.
  • To integrate insights from environmental ethics and planetary science.

Main Methods:

  • Developed a two-axis comparative tool for ethical frameworks.
  • The tool considers intrinsic or instrumental value.
  • Analysis applied to geoengineering, terraforming, planetary protection, and space exploration.

Main Results:

  • A novel analytical tool for evaluating ethical considerations in planetary engineering.
  • Comparative analysis framework for intrinsic vs. instrumental values in planetary contexts.
  • Application of the framework to Earth-based geoengineering and extraterrestrial terraforming.

Conclusions:

  • The developed framework aids in navigating complex ethical landscapes of planetary engineering.
  • Ethical considerations are crucial for both geoengineering and space exploration.
  • Further research needed on value systems in planetary interventions.