The Ptolemaic system is a geocentric cosmology, which assumed that the earth was stationary and at the center of the whole universe. It is important to remember, though, that even during Galileo's time, most people believed that the earth was the center of the universe and the sun rotated around our planet.
The expectation for the old civilizations was that the sun, moon, planets and stars were supposed to travel in an uniform motion. This motion was supposed to be a circle which was considered the closest to a perfect path for the heavenly bodies.
However, when studying the paths of those heavenly bodies, they could observe that, at least looking from Earth, the paths were not circular.
Therefore Ptolemy had a hypothesis that explained the <em>'supposed imperfection'</em>. In his model, he suggested that the apparently irregularity in the paths of the moons and starts were a combination of perfect paths (or circular motions) seen in perspective from the stationary body of the observer.
His suggestion was that, the planets were rotating around a center like the moon rotates the earth and they were doing this rotating movement around the earth like the moon rotates the sun fixed at Earth's rotation therefore giving us the illusion that they were not in a circular/perfect path.
So, in Ptolemy's system, Venus would rotate around our planet the same way that our moon rotates around the sun.
For this table, the reference currency is the Euro.
- The reference currency means that the euro is the base unit, the table shows how much is one euro worth in the different currencies. This can be observed on the first row of the second column where it says (euro= 1)
The exchange rate of the euro to the US dollar and most other currencies is determined by supply and demand.
- Most countries have a flexible exchange rate. This means that the government does not have a fixed exchange rate. With a fixed exchange rate the government compromises to give a given amount of money in exchange for one unit of a specific currency. Whenever, there is a flexible exchange rate, the price of another currency is determined by the incoming and outgoing capital.
According to the chart, one euro would buy 1.2149 Swiss francs.
- This can be found in the fourth row and second column of the chart.
- 1 euro = 1.2149 Swiss francs
It would cost 1.28 US dollars to buy one euro.
- 1 euro = 1.28 US dollars
- This can be found in the last row and second column of the chart.
4. Iran
The 66 Americans were held hostage in Iran for 444 days .
Answer:
-- Japan's leaders were refusing to surrender.
-- US resources had been stretched thin, and the United States' ability to invade was limited.
-- Japan's ability to make war had been badly crippled.
-- The United States was inflicting heavy damage by bombing Japan's cities.
Explanation:
Harry S. Truman was one of the greatest and one of the famous Presidents of the United States of America. He served as the 33rd President to the United States of America. He is well known all over he world mainly as the man who dropped the atomic bomb on Hiroshima and Nagasaki of Japan to put an end to World War II.
The United States wanted to avoid casualties resulting from the invasion of Japan and also to end the war quickly. The Japanese leaders did not wanted to surrender and they were crippling the war by heavy bombarding and killing everybody. Besides the USA's resources also stretched out and the US was inflicting heavy damages by attacking may of the Japanese cities. Hence Truman decided to attack Japan with the atomic bomb in the year 1945.
