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Copy of Hebrew Astrolabe

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PRESENTATION OUTLINE

THE HEBREW ASTROLABE

ANNA & CLAUDIA

WHAT DO YOU THINK AN ASTROLABE IS?

ASTRONOMY, GEOGRAPHY, TIMEKEEPING

Photo by vetenskapsman

TOOL FOR NAVIGATON

GRADIENT AND HORIZON RELATIONS

POSITION SUN AND STARS

Photo by VinothChandar

FROM THE POSITIONS OF THE SUN AND STARS THEY COULD TELL TIME

SUN FOR MORNING, STARS FOR EVENING

INCLINE AND DECLINE OF HORIZON

POSITION OF SHIP IN RELATION TO THE SEAS

USED TRIGONOMETRIC RATIOS

SINθ, COSθ, TANθ, SECθ, COSECθ, COTθ

GRADIENT, HEIGHT OF HORIZONS

HARBINGERS USED ASTROLABES

PREDICTING LIVES THROUGH ASTROLOGICAL HOROSCOPES

ORIGINATED IN GREECE

150-200BC BY HIPPARCHUS

HIPPARCHUS

MATHEMATICIAN AND ASTRONOMER

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Photo by Jason and Ali

HEBREW ASTROLABE ORIGINATED IN SPAIN

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APPEARANCE OF AN EXQUISITE POCKET WATCH

Made of brass: alloy of Cu and Zn

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PREDOMINANTLY IN HEBREW

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MULTICULTURALISM

CHRISTIAN, JEWISH, MUSLIM

TIME?

Photo by twenty5pics

WHAT IS THE TIME?

Photo by pamhule

WHEN OUR PHONES DIE OUR ONE DAY,

WE HOPE YOU WILL KNOW HOW TO USE THE ASTROLABE,BASED ON TRIG!