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Meridians01:28

Meridians

In surveying, meridians are vital reference lines to measure directions and establish accurate land orientations. Meridians run from the north to the south poles, providing a stable framework for angular measurements and mapping. Meridians are fundamental in survey design, with the primary types being astronomic, magnetic, and assumed meridians. Each type offers distinct benefits and limitations, selected based on the project's scale and precision needs.The astronomic meridian is aligned with...
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In the early 17th century, German astronomer and mathematician Johannes Kepler postulated three laws for the motion of planets in the solar system. In 1909, he formulated his first two laws based on the observations of his forebears, Nikolaus Copernicus and Tycho Brahe. However, in 1918, he published his third law of planetary motion, which gives a precise mathematical relationship between a planet's average distance from the Sun and the amount of time it takes to revolve around the Sun. It...
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The biological clock is involved in many aspects of regulating complex physiology in all animals. It was in 1935 when German zoologists, Hans Kalmus and Erwin Bünning, discovered the existence of circadian rhythm in Drosophila melanogaster. However, the internal molecular mechanisms behind the circadian clock remained a mystery until 1984, when Jeffrey C. Hall, Michael Rosbash, and Michael W. Young discovered the expression of the Per gene oscillating over a 24-hour cycle. In subsequent years,...
Kepler's Second Law of Planetary Motion01:29

Kepler's Second Law of Planetary Motion

In the early 17th century, German astronomer and mathematician Johannes Kepler postulated three laws for the motion of planets in the solar system. His first law states that all planets orbit the Sun in an elliptical orbit, with the Sun at one of the ellipse's foci. Therefore, the distance of a planet from the Sun varies throughout its revolution around the Sun.
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Kepler's First Law of Planetary Motion01:10

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In the early 17th century, German astronomer and mathematician Johannes Kepler postulated three laws for the motion of planets in the solar system. He formulated his first two laws based on the observations of his forebears, Nikolaus Copernicus and Tycho Brahe.
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Azimuths and bearings are essential concepts in surveying, providing methods to express the direction of a line relative to a meridian. Azimuths refer to the clockwise angle measured from the north end of a reference meridian to the given line, ranging from zero to 360 degrees. This method gives a comprehensive directional reference within a full 360-degree circle, making it a straightforward way to communicate direction in various fields, including navigation, cartography, and...

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Assessing the Influence of Personality on Sensitivity to Magnetic Fields in Zebrafish
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Assessing the Influence of Personality on Sensitivity to Magnetic Fields in Zebrafish

Published on: March 18, 2019

Rulers of the zodiac.

Patricia Fara1

  • 1Clare College, Cambridge, CB2 1TL, UK. pf10006@cam.ac.uk

Endeavour
|December 6, 2011
PubMed
Summary
This summary is machine-generated.

Pinpointing the exact origins of science is complex, challenging common assumptions about its historical beginnings. This study explores the difficulties in defining a precise time and place for the emergence of scientific thought.

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Area of Science:

  • History of Science
  • Philosophy of Science
  • Epistemology

Background:

  • Common understanding of science often oversimplifies its historical development.
  • Defining the genesis of scientific inquiry is a persistent challenge in historical and philosophical studies.

Observation:

  • The abstract highlights the problematic nature of identifying a singular origin for science.
  • Popular conceptions of science may not align with its complex historical evolution.

Findings:

  • There is no universally agreed-upon date or location for the definitive start of science.
  • The origins of science are multifaceted and debated among scholars.

Implications:

  • Revisiting the historical narrative of science is crucial for a more accurate understanding.
  • Acknowledging the complexity of scientific origins can foster a more nuanced appreciation of scientific progress.