Nobel prize winners

I should write about three scientists who won Nobel Prize this year. They are three Japanese, Isamu Akasaki, Hiroshi Amano, and Shuji Nakamura. They invented blue LED which is brighter and more energy efficiency than standard red or green LED. Moreover, by combination of red, green and blue LEDs, white LED becomes available.

First of all, from the point of commercial view, blue LED is a good eye catching item. I believe more consumer would notice the product in the shop or online store. In recent years, blue LED started using for illumination. In this season, we can see many Xmas trees illuminated by blue LEDs.

Secondly, a lot of manufacturer produce and sell white LED bulb in the market. They encourage us to replace with white LED bulb and it becomes very popular among us. It needs less energy than red or green LED, so it can provide us with longer life and cost saving. I think this has very important meaning especially for developing countries where the literacy rate is still low. A lot of children are living in poor village where have no electricity. They cannot study at home after it gets dark. If electricity and LED bulb becomes available in those areas, the literacy rate could be higher. This would help those countries for economy growth.

After reading "CHOIR Boy" graded reader, by Tomoko