Astronomy is love! In this presentation, I share three fascinating stories of constellations, explaining how the constellations in the sky got their name, and how each constellation is related to one another.
Astronomy is love! In this presentation, I share three fascinating stories of constellations, explaining how the constellations in the sky got their name, and how each constellation is related to one another.
Amazon Elastic Compute Cloud (Amazon EC2) is a web service that provides re sizable compute capacity in the cloud. It is designed to make web-scale cloud computing easier for developers.
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The Arena is active protection system developed at Russia's Kolomna-based Engineering Design Bureau for the purpose of protecting important places. The Arena system was primarily designed to defeat threats. It uses a Doppler radar to detect incoming warheads and destroy it by throwing projectile. By the array scan technology of image processing now is easy to detect the area of an object. Most of the war threads are in common format. So it was easy to detect any object nature. By using picture element information, this system can sense an object. The main purpose of this research is to build a cost effective Arena Active Protection System that is less costly than current system. The purpose of this research work is to invent a method to avoid Doppler radar which is used in current system and use pair of phototransistor which is more cost effective then Radar.
Implementation of RSA Algorithm for Speech Data Encryption and DecryptionMd. Ariful Hoque
An efficient implementation of RSA algorithm for speech data encryption and decryption. At first, five hundred Bangla speech words were recorded from six different speaker and stored as RIFF (.wav) file format. Then our developed program was used to extract data from these words and this data were stored in a text file as integer data. Finally, we used our implemented program to encrypt and decrypt speech data.
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Throughout human history and across many different vultures, names, and mythical stories have been attributed to the stars and patterns in the night sky, this gives birth to constellations. Constellations is a group of stars forming a pattern that is traditionally named after its apparent form or identified with a mythological figure.
8. ROLES
Represented the Gods and their symbols
Farming Calendar and rustic activities
These figures developed in stages from 3200 BC – 500 BC
The most important in the divine set was the 12 Zodiac Signs plus
several associated animals ∆ serpent, crow, eagle and fish ∆
9. Where the earliest direct evidence for the
constellation comes from inscribed stones and
clay writing tablets dug up.
1300 – 1000 B.C were Mesopotamian
constellations were created
There are Babylonian star catalogues
o MUL.APIN – a text dating to the Late Bronze Age
(14th – 12th century BC) which include the farming
calendar tradition that gives an accurate divine
associations of constellation.
o Venus Tablet of King Ammizaduga
10.
11. Orion correlation theory
According to Egyptian mythology, the gods descended from
the belt of Orion and Sirius– the brightest star in the sky. The
ancient Egyptian civilization firmly believed that from Sirius and
Orion beings came in the form of humans– Osiris and Isis and
they instigated the human race.
The concept that the three pyramids at Giza are in a special
alignment of Orion’s Belt is amazing.
Why does the Great Pyramid have air shafts that point to Orion?
These are just some of the question that– until today, do not
have a clear answer.
12.
13.
14. The Modern Constellation in this region were defined during the
Age of Exploration. In 1919 a group of astronomers formed the
International Astronomical Union or IAU. One of the first items they
tackled was the celestial disarray. The IAU made a list of 88 'official'
constellations in 1922 and approved the boundary of each six
years later.
The 88 official constellations chosen by the IAU were all of
European origin because those constellations were already well
known and used by many professional astronomers.
The official constellations are no more and no less important than
the constellations of any other time, country, or culture. What they
are is the common language for astronomers around the world.
Think of the world's spoken languages - there is no best or correct
language and each conveys some meanings better than others.
Still, English is becoming the lingua franca and like English the
official constellations are a useful tool for international
communication.
15.
16. Common Names
The Bayer Naming System
The Flamsteed Naming System
17. Constellations are useful because they can help people to
recognize stars in the sky. By looking for patterns, the stars and
locations can be much easier to spot.
The constellations had uses in ancient times. They were used
to help keep track of the calendar. This was very important so
that people knew when to plant and harvest crops.
Another important use for constellations was navigation. By
finding Ursa Minor it is fairly easy to spot the North Star (Polaris).
Using the height of the North Star in the sky, navigators could
figure out their latitude helping ships to travel across the
oceans.
18. The largest constellation by area is Hydra which is
3.16% of the sky.
The smallest is Crux which only takes up 0.17 percent
of the sky.
Small patterns of stars within a constellation are
called asterisms. These include the Big Dipper and
Little Dipper.
The word "constellation" comes from a Latin term
meaning "set with stars."