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46161 2010 年 06 月 10 日 15:34 Reading (loading. ..) Comments (0) Category: Study
Bright accommodation come from? Standard is where the dark?
vast vast universe, we can not use large measure of the earth to measure. Only with the speed of light to measure distance. A beam of light transmission 186,000 miles per second, about 30 million kilometers, or 7 times the circumference of the earth. A beam of light transmitted to Earth from the Sun in 8 minutes, so we can say that the sun 8 light minutes from us. A beam of light within a year of about 10 trillion kilometers through space, the length of the unit - the light in the distance through the year - as a light.
Earth is a place in the universe, but by no means the only place, not a typical place. If we are free to hold in the universe,
mulberry bags, we are attached to or changed hands in an opportunity on the planet is only one 10?? (10??, then after 33 1 0). Objects can be seen how important it is.
from the privileged position of a galaxy, we can see the light of many vague to be as thin foam of the sea as the waves scattered in space,
paul smith bag, these light to be that galaxies. We are part of the galaxy, the nebula we see 80 billion light years from Earth, in the center of the known universe.
galaxy is a gas, dust and stellar populations (on the one hundred billion perseverance) component. Each star to one person may be a sun. There are stars in the galaxies, planets, there may be biological, intelligent life and civilization of the universe.
universe, there are several hundred billion galaxies, each galaxy from an average of 100 billion stars. Stars can accommodate 10,
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human honor came to this planet. Human beings are a product of the universe, is now temporarily living in is called With other findings, like many others, men discovered that the earth is a small planet. Alexander was first discovered in Egypt . The city lived a man named Ai Latuo Disney, he was a But he was almost in all fields are From his book
Aila Tuo Disney is curator of the library in Alexandria. One day, his manuscripts from the museum one can read the following passage: In the southern border outpost near the West Nile because of where the largest waterfall in the June 21 noon, standing on the ground did not cast Changgan shadow. Day during the summer solstice - the longest day of the year, close to noon, the shadow of the church getting shorter cylinder, and finally disappear at midday. Then on top of direct sun from the ground down in a deep well water where you can see the reflection of the sun.
Aila Tuo Disney like: Why the West does not cast a shadow because of the Changgan, and the same time on the north side of Alexander's Changgan but the shadow cast was it? He believes that the only possible answer is: the Earth's surface is curved, and the greater curvature, the greater the difference in the length of the shadow. Because the sun is so far away from us, so when the sun to the Earth are parallel. Changgan different angle with the sun's rays, they cast a shadow on the ground, the length is different. To cast shadows on the ground in terms of length between Alexander and the West because of the distance between them must be the deviation angle of the ground - about 7 degrees. 7-degree angle is equivalent to a 360-degree circumference of the earth 1 / 50. Aila Tuo Alexander and the West by Disney that the distance between about 800 km, as he paced off hire. 800 km x 50 is equal to 40,000 km: This is the length of the circumference of the earth.
this answer is correct. In 2200 years ago, this is a remarkable achievement. When you know the diameter of Earth is a small planet, did not you want the sea to explore it? Do not you want to explore that undiscovered land , even sail around the world to do it? 比埃拉托斯尼 early as 400 years time, has been employed by the Egyptian Pharaoh Nico Phoenician fleet, was surrounded by African week. They set sail from the Red Sea, south along the east coast of Africa, then north from the Atlantic, and finally returning from the Mediterranean. The epic journey took three years, the equivalent of modern
after the discovery of the Aila Tuo Disney, brave and venturesome sailor had great sailing repeated attempts. Aila Tuo Disney calculated the circumference of the earth after length, some people may have tried to global navigation, but in the Magellan ago, no one to be successful.
in Aila Tuo Disney's era, people made the globe to indicate the Earth as seen from space. They are well aware of this globe in the Mediterranean region is basically realistic, but the farther away from their home, this is not the globe becomes more realistic. This man is doing everything possible to begin to explore other worlds.
addition Aila Tuo Disney, there are astronomers Xipaqiasi, he drew a constellation map and estimate the star's brightness; Euclid,
handbags online, his outstanding talent will be a systematic analysis of the geometry, and is effortlessly solving a mathematical problem of the king, said :, as the European contribution to a few meters was on the same geometry; HR phallus, biologists, he confirmed the center of intellectual activity in the brain but not in heart; Alexander Herron, gear trains and the inventor of the steam engine, Pei Erjia the 阿波洛尼厄 Adams, a mathematician, he demonstrated various forms of conic sections - ellipse, parabola and hyperbola - these curves are planets, comets and stars of the running track; Archimedes, Leon that much. tat. Vinci greatest before the mechanical genius; there astronomer and geographer Ptolemy, who compiled the false science that we now call astrology: his geocentric theory of rule 1500.
science we have today is far beyond the ancient science,
burberry bags, but our understanding of history, there are still not make up for deficiencies. The ancients understood the history of the universe is a long time, they try to understand its distant past. We now know the universe than we had imagined, much older,
handbags online cheap, we have investigated the space, know that we live in a fuzzy most remote corners of the galaxy, the living in a surrounded by an ordinary star on the dust. If space is infinite , then a small point, we have unlimited time, also occupies a moment.
Blaise. Pascal in If I had it all, I do no work. Grandiose universe was swallowed by the ocean, while their brains comprehend the world.
We now know that our universe - or at least its most recent incarnation - some 150 million years or 200 million years of history. This is the so-called We are human is the most striking result of the transformation - the big bang away on behalf of the children. Our mission is to understand and further into the birth of our universe.
known things is limited, the unknown is infinite; I stood in the vast sea of endless mystery on an island. We continue to explore the duties of each generation. (TH Huxley)
(6 月 10 日 lunch rush and for the time)
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