take for example

Scientific discoveries in life In life, science is everywhere, and sometimes it is likely to slip through your fingers. Whether we can catch it depends on whether we can find it. There are many things in life that deserve our attention. We should be good at discovering the little things in life. Often a small matter can cause many people to explore and think, and some even become eternal mysteries. So: Science is all around us. I remember once cleaning my room and digging out my primary school exercise book. These books are jumbled up on my desk. I happened to find that the handwriting of pencils, pens and ballpoint pens in these books is different in blue and black, and the clarity is different. Why? I did a little experiment on a whim. I'll ask the adults about the structure of paper first. It turns out that the main component of paper is fine fiber. I also know the composition of the refills and penholders of three kinds of pens: the refills of pencils are made of graphite and clay by stirring and firing; Pen ink is a dye; The pen and ink of ballpoint pen are made of oil and a special pigment. Then I found three kinds of paper: one is smooth, the other is rough, and the other is our ordinary exercise book. I drew a straight line on three pieces of paper with a pen, pencil and ballpoint pen, and found that the straight line drawn by the pencil on smooth paper was blurred, while the other two were clear. When I touched it with my hand, the handwriting of the pen almost disappeared, while the ballpoint pen remained basically unchanged. On rough paper, the three straight lines are very different; Pencils are like a straight line of ants, intermittent: pens are like caterpillars with burrs around them; The straight line of ballpoint pen is continuous, round, smooth and without burr, and there is little difference between the three straight lines in ordinary exercise books. Through my research, I went to consult my teacher later. Finally, I found that when writing with a pencil, the pencil is attached to the surface of the paper. The rough paper is uneven, and the lead powder is only attached to the protruding place, and there is no trace on the concave surface, so the writing is intermittent. Smooth paper, lead powder is not easy to absorb, so only vague traces are left. Pen and ballpoint pen ink can penetrate into the fibers of paper, while ballpoint pen ink contains grease, which has strong adsorption and will leave round traces. However, these oils will penetrate for a long time, which will affect the readability and neatness of handwriting. Look! This is the science of life. Science is discovered. You know, many scientists discover science from ordinary things, and then think deeply and draw conclusions. Newton, for example, learned from an apple an extremely ordinary little thing that fell to the ground and discovered such a great achievement as "gravity". There is also the story of "Edison incubating chickens". All these can show that science is in our life, and we should be good at discovering it. Paying attention everywhere is learning. Just like the stationery such as paper, pen and ink mentioned above, it is very common to us, but it is also ignored because of its generality. However, as long as we are good at discovering it and studying it, we can get valuable results from it. May we all start with a careful observation of ordinary things. Friends, let's be good at discovering the science in life! I believe you will gain something.