When the weekend came, my mother asked me to shine my shoes at home, and I readily agreed. I went to the shoe cabinet and looked at these dusty shoes. I have been polishing them. Suddenly, a question flashed through my mind. Why are leather shoes getting brighter and brighter?
Experiment: I found two pairs of old and new leather shoes of the same brand and style for comparative observation. I first touched the uppers of two pairs of leather shoes and found that the surface of the new shoes was much smoother than the old ones. Old leather shoes are coated with shoe polish. After careful polishing, it shines a lot, but it is still not as good as new leather shoes. Is there a relationship between the brightness of leather shoes and the smoothness of uppers?
I brought a pair of old leather shoes that were not polished, and the uppers were uneven under the magnifying glass. Then, I carefully wiped one shoe with shoe polish, and the other shoe without shoe polish was used as a blank control. I found that after the first piece was wiped, the surface became much smoother and brighter than the other piece in the sun. Why is there such a big difference between them?
Answer: I searched online and found that the surface of leather shoes is not absolutely smooth. If it is an old leather shoe, its surface is of course more uneven and can't be reflected in the necessary direction, so it looks dull. There are some small particles in shoe polish, which can just be filled into the pits on the surface of leather shoes when shining shoes. If you wipe it with a cloth again to make the shoe polish more uniform, the surface of leather shoes will become smoother and smoother, and the potential for reflection will be strengthened.
I finally understand why shoes are getting brighter and brighter. It turns out that there are many "question marks" in life!