Module: Modelle des Kosmos: Vorstoss ins Unendliche
Sequence: 0.0. START
Branching Point: Advancing Towards Infinity
Sequence: 0.1 Themenuebersicht
Branching Point: Advancing Towards Infinity (Overview of Topics)
Sequence: 1.0. 13200_Durchgang
Slide: Astrolabe
Slide: Quadrant
Slide: Galileo’s Telescope
Slide: Sights with Celestial Globe
Slide: Heliometer
Slide: Spectrograph
Sequence: 2.0. EBENE_02_Beobachtung
Branching Point: Observing and Measuring the Sky
Sequence: 2.1. Objekt 13200_1359: Galileis Fernrohr_Deep
Slide: Galileo’s Telescope
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Sequence: 2.2. Objekt 13200_2727: Visiergeraet mit Himmelsglobus_Deep
Slide: Sights with Celestial Globe
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Sequence: 2.3. Fernroehre_Sternwarte
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Slide: Giordano Bruno (1548 –1600)
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Slide: Edwin P. Hubble (1889–1953)
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Sequence: 2.1. Objekt 13200_1359: Galileis Fernrohr_Deep
Slide: Galileo’s Telescope
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Sequence: 2.2. Objekt 13200_2727: Visiergeraet mit Himmelsglobus_Deep
Slide: Sights with Celestial Globe
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Sequence: 2.3. Fernroehre_Sternwarte
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Slide: Giordano Bruno (1548 –1600)
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Slide: Edwin P. Hubble (1889–1953)
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Sequence: 3.0. EBENE_02_Instrumente
Branching Point: Instruments
Sequence: 3.1. Objekt 13200_1097: Astrolab_Deep
Slide: Astrolabe
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Sequence: 3.2. Objekt 13200_1614: Quadrant_Deep
Slide: Quadrant
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Sequence: 3.3. Objekt 13200_0595: Heliometer_Deep
Slide: Heliometer
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Sequence: 3.4. Objekt 13200_1832: Spektrograph_Deep
Slide: Spectrograph
Slide: How a Spectrograph Works
Sequence: 3.1. Objekt 13200_1097: Astrolab_Deep
Slide: Astrolabe
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Sequence: 3.2. Objekt 13200_1614: Quadrant_Deep
Slide: Quadrant
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Sequence: 3.3. Objekt 13200_0595: Heliometer_Deep
Slide: Heliometer
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Sequence: 3.4. Objekt 13200_1832: Spektrograph_Deep
Slide: Spectrograph
Slide: How a Spectrograph Works
Sequence: 1.0. 13200_Durchgang
Slide: Astrolabe
Slide: Quadrant
Slide: Galileo’s Telescope
Slide: Sights with Celestial Globe
Slide: Heliometer
Slide: Spectrograph
Sequence: 2.0. EBENE_02_Beobachtung
Branching Point: Observing and Measuring the Sky
Sequence: 2.1. Objekt 13200_1359: Galileis Fernrohr_Deep
Slide: Galileo’s Telescope
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Sequence: 2.2. Objekt 13200_2727: Visiergeraet mit Himmelsglobus_Deep
Slide: Sights with Celestial Globe
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Sequence: 2.3. Fernroehre_Sternwarte
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Slide: Giordano Bruno (1548 –1600)
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Slide: Edwin P. Hubble (1889–1953)
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Sequence: 3.0. EBENE_02_Instrumente
Branching Point: Instruments
Sequence: 3.1. Objekt 13200_1097: Astrolab_Deep
Slide: Astrolabe
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Sequence: 3.2. Objekt 13200_1614: Quadrant_Deep
Slide: Quadrant
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Sequence: 3.3. Objekt 13200_0595: Heliometer_Deep
Slide: Heliometer
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Sequence: 3.4. Objekt 13200_1832: Spektrograph_Deep
Slide: Spectrograph
Slide: How a Spectrograph Works
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Quadrant
Instrument for measuring angles, equipped with sights, from the Andechs Benedictine monastery collection, sixteenth century

Before the invention of the telescope, the quadrant is the most important measuring instrument for astronomical observations. Its primary purpose is to determine altitudes, but geometricians use it to determine other kinds of angles as well.

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