Blue LEDs & Nobel Prize winners

led_blue (Photo credit: Wikipedia)

I usually see 2 lightings at least in Winter. During this winter season, I saw the lighting at TOKI NO SUMIKA (時の梄) in Gotenba, Shizuoka and at ALPS Azumino national goverment park in Azumino city. Those lighting were very beautiful because the lighting of various colors were used, and it really got to me.

When I saw them, I remembered 3 doctors who invite Blue LED and won a 2014 Nobel Prize. If they don't invite Blue LED, I can't see a part of the colors we saw in the lighting and the lighting can't touch me or other viewers emotionally. If they don't invite Blue LED, we can't see clear electronic signboard for easy understanding at station and on road etc.

A few years ago, I saw a news that professor Nakamura went to court for asking his recompenses of inviting Blue LED to his previous company. When I saw that news, I surprised its amount (60 billion yen) as his recompenses and didn't know whether the recompenses were suitable, or not. But this time, I learned what effect Blue LED has for our life and industries and was glad that 3 doctors' research was recognized and was known very well.

An after reading task, by Ritsuko (graded reader "CHOIR Boy)

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