Unformatted text preview: Ancient & Modern Devices
Harriane Mae Gonzales & Gestene Reanne Prado ABM 11 - SRC01 Ancient Devices
1. Nebra Sky Disk
The Nebra Sky Disk is an ancient astronomical
instrument made out of bronze disk with a blue-green
platina and gold symbols. Built in 1600 BC, the disk was
used to calculate the yearly course of the sun. 2. Armillary Sphere
Invented by John Samuel Slater, armillary sphere is an early
astronomical device for representing the great circles of the
heavens, including in the most elaborate instruments the
horizon, meridian, equator, tropics, polar circles, and an
ecliptic hoop. 3. Celatone
To use Jupiter's moons as a clock for determining longitude at
sea, observing them through a telescope on the deck of a
continuously moving ship, Galileo designed a device that he
called celatone. It consisted of a metal helmet with a visor
carrying a small telescope. 4. The Astrolabe
The astrolabe is a calculation and pedagogical tool of Greek
origin (2nd century BC). It made it possible to solve astronomic
problems without any calculations. It identified, for example, the
time that the the sun or the stars would rise or set, and the sun's
height at its highest point above the horizon, etc. 5. Planisphere
A planisphere is a simple hand-held device which shows
a map of which stars are visible in the night sky at any
particular time. By rotating a wheel, it shows how stars
move across the sky through the night, and how different
constellations are visible at different times of year. Modern Devices
1. Star Charts
Similar to the ancient astronomical instrument
(Nebra Sky Disk) which calculates the yearly course of
the sun, modernity has the star chart which serves as a
guide in the sky for astronomers and mere astronomy
buffs. It is likely to take the form of a circular area
peppered with dots representing stars arranged as
they appear in the sky. The center of the chart shows
stars that are directly overhead. 2. The Globe
As an early astronomical device, armillary sphere represents
the great circles of the heavens, including in the most
elaborate instruments the horizon, meridian, equator,
tropics, polar circles, and an ecliptic hoop, the globe also
shares the same functions. The only difference is that it is
now not only with circles but also continents, for
astronomers to easily elaborate and explain the said lines. 3. Optical Telescope
As Galileo designed a device that he called celatone, the optical
telescope is a long, tube-shaped telescope that you might
imagine he will also be using in modernity. It became the
instrument of choice for observing distant stars. It gathers and
focuses light, mainly from the visible part of the electromagnetic
spectrum, to create a magnified image for direct view, 4. Quadrants
The mariner's astrolabe remained the most popular
astronomical instrument until the end of the seventeenth
century. It became replaced by more accurate instruments
such as quadrant. The four quadrants are a narrative of the
journey of the Zodiac. 5. Space Telescope
Telescopes launched into space represent the next phase
of studying stars. Space telescopes orbit the Earth but are
programmed to study stars in various ways. Infrared
radiation, microwave, and gamma-ray detection must be
performed away from the atmosphere, so telescopes such
as the Hubble Space Telescope have very high resolution.
This allows astronomers to follow the progression of
exploding stars. Ancient & Modern Devices
Comparison & Contrast
Modern devices are devices that were once ancient discoveries but were
enhanced.
Modern devices have given more accurate and acceptable information for
astronomers than ancient devices have.
As of today, technologically advanced astronomical devices allow us to see stars,
planets, and other bodies, giving us accurate depictions of space and letting us
find out more of how planets were made, work or even contain.
Modern devices have given astronomers accurate measurements of the length
of the year as well as the correct explanation of eclipses. ...
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