This days

Our body, physiology and medicine. Each square inch of human skin consists of 19million cells, sixty hairs, ninety oil glands, nineteen feet of blood vessels, 625 sweat glands, and 19000sensory cells.

It takes 17 muscles to smile, 43muscles to frown.

One-fourth of the 206 bones in the human body are located in the feet.

Man has tiny bones once meant for a tail and unworkable muscles once meant to move his ears. The brain is surrounded by a membrane containing veins and arteries. This membrane is filled with nerves of feeling; if it is cut into, the person feels no pain.

The average brain comprises 2 percent of a person’s total body weight. Yet it requires 25percent of all oxygen used by the body, as opposed to 12 percent used by the kidneys and 7 percent by the heart.

Nerve signals may travel through nerve or muscle fibers at speeds as high as 200 miles per hour. The lens of the human eye is composed of numberous transparent fibers and is encased in a clear elastic membrane. New fibers are constantly being created. Therefore, the size of the lens incresea with age,. The lens of eighty-year-old is more than 50 ercent larger than that of a twenty-year-old. However, as the lens grows larger, it becomes less pliable and its ability to focus for near vision is reduced.

Much of this is about the biological of human’s body, I get a lot after reading them. The second part is about things and science around us.

The number 10 is used as a convenient base to count with, but the Gauls of ancient France, the Mayas as Central America , and other peoples used a base of 20. The Sumerians, the Babylonians, and other after them used a base of 60—convenient because 60 can be evenly divided by 2,2,4,5,6,10,12,15,20, and 30. This 60 survives in the divisions of hours into minutes and minutes into seconds, and in the division of the circle into 360 degrees.

There is an infinite number of numbers that have the same value whether added or multiplied. They follow this pattern.

A prime number is any number that can be written with three digits is 9, that is , 9. No one knows exactly its value; it’s number that begins with 428124773… it would have 369 million digits—and would take years to read.

In photography’s pioneer days, sitting for a portrait called for extreme patience. Making a daguerreotype in 1837 required a fifteen-minute exposure. The subject’s head was put in a clamp to hold it still.

The design of the king found on all standard playing-card decks has, with slight alterations, remained the same for three centuries. It s believed to be based on a portrait of the English ruler Charles I. the picture of the queen is of more doubtful origin, but some think it was taken from a early portrait of Queen Elizabete.

Paul Charles Morphy, an American chess master, was acknowledged at age twenty-one to be the greatest chess player in the world. His astounding memory allowed him to achieve amazing success while blindfolded. For example, in a set of eight games of chess played simultaneously against eight opponents, Morphy not only had to memorize the positions of 256 chessmen but also had to revise his mental images of them after every move. At the same time, he had to plan eight separate attack and defence postures. The result: He won six games, tied one, and lost one.

In this part, I know of a lot of stories of famous people, it is funny and interesting. The third part is about literature and art.

The roman poet Lucretius, in 56 B.C., published a poem in which he expounded the views of those Greek philosophers who believed the universe to be composed of atomists had vanished because their views were unpopular, and Llucretius’ poem almost vanished, too. In 1417, however, one copy was discovered, copied and eventually printed. Its views helped to persuade the chemists of early modern times to persuade the chemists of early modern times to consider the atomic theory of matter, and those views won out eventually.

The two greatest writers in their respective languages—William Shakespeare and Miguel de Cervantes—died on the very same day in the very same year, April 23, 1616. They probably did not know of each other. Two men who knew each other well—the second and the third residents of the U.S., John Adams and Thomas Jefferson—died on the very same day in the very same year, the Fourth of July in 1826. Adams’s last words were :”Jefferson still lives.”Jefferson had died ,however, a few hours earlier.

John Milton wanted to reform politics with poetry .When he realized that this was impossible, he gave up his long-held dream of being a superlative poet and chose instead to devote himself almost exclusively to writing revolutionary manifestoes ,in prose, which he did for more than a score of years.

Edward Taylor, now generally recognized as the finest poet of colonial America, did not allow any of his poetry to be printed while he lived ,and he tried to prevent his heirs from publishing his poems after his death .However,400 manuscript pages were given by his descendants to Yale University in 1883,and finally, in 1939,210years after Taylor’s death, a selection of his poems was published to wide critical acclaim.

This book isn’t very long, and it doesn’t have a good like long story, but it suits me much. For it doesn’t need me to read every day , and I have flexiable time to read it. Whenever you have time, you can just read it and you can get in it easily. Also, it do me much good.