The first small camera was invented in 1685, but it was just a camera. It was a long time before people figured out how to make the right kind of paper for photographs. Modern photography, as we know it, really came into being in the 19th century, around the year 1865, to be exact. In the late 1800s and early 1900s, photography really took off. Several types of cameras were invented during the time, and photographers also came up with new and better ways to take pictures. Photography became a form of art.
Although most people think photographs show real things, photography also changed people’s ideas about modern art. Modern art developed in the late 19th century, around the time of the invention of photographs. Modern art was different from other kinds of art because modern art paintings did not try to show "realistic" pictures. For example, artists of modern art often produced paintings that looked different from a real picture. Photography was perfe
The first small camera was invented in 1685, but it was just a camera. It was a long time before people figured out how to make the right kind of paper for photographs. Modern photography, as we know it, really came into being in the 19th century, around the year 1865, to be exact. In the late 1800s and early 1900s, photography really took off. Several types of cameras were invented during the time, and photographers also came up with new and better ways to take pictures. Photography became a form of art.
Although most people think photographs show real things, photography also changed people’s ideas about modern art. Modern art developed in the late 19th century, around the time of the invention of photographs. Modern art was different from other kinds of art because modern art paintings did not try to show "realistic" pictures. For example, artists of modern art often produced paintings that looked different from a real picture. Photography was perfe
The first automobile was invented more than two hundred years ago. It used steam for power and had wooden wheels. The first automobile may have been simple and primitive, but it was an extremely important invention. The automobile today is the primary means of land transportation. It has produced more changes in our daily life than any other machines.
Almost all gasoline engines work in the same way—with four movements, or strokes, of a piston in a cylinder. The first stroke pulls the fuel mixture (gasoline and air) into the cylinder. The second stroke compresses the fuel mixture. A spark plug produces a spark that ignites the fuel mixture and causes the third stroke. The final stroke removes any waste gases which might remain in the cylinder.
The preceding paragraph explains what happens inside the cylinder to make the piston move. When the piston is pushed down by the explosion in the third stroke, it pushes the connecting rod. This rod rotates the cranksh
A. Automobiles
B. How a Car Works
C. The First Car
D. Cars and Roads
I remember quite clearly the first time I was really shaken by my wife’s intuition.
We were looking; for a second-hand car, and I had been much taken by a rather nice drop-head with a well-cared-for appearance.
"Well, she runs nicely,” I told my wife after the try-out. “Good start-up, engine sounds sweet, low mileage and the right price. What do you think"
"I don’t like it"
"Why not"
"I don’t know. There’s just something about lie salesman that I don’t believe. "
A few weeks after we had bought another car elsewhere, I happened to find out the history of the drop-head. It had been seriously damaged in a crash before we saw it, and cleverly done up. The car was, indeed, a very bad risk.
Of all the things about women that their husbands do not understand, perhaps the biggest question is this: How can she often be right about things of which she h
A. The damage was not serious at all.
B. He was not careful enough.
C. It had been skillfully repaired.
D. The salesman only tried it out smoothly.
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