The 4th Generation Light

I heard Blogs from Japan account for 30%. But I think, many of it may make up about a mere private diary or given up writing. For example, "Today, I went shopping with my friend. I bought too many purchases to bring home and so I call us a taxi. That's a very expensive shopping. " Uh, in such case I unconsciously had said "so what?" The truth is, it is possible that such diary contains some useful information, and nothing is the greater highlight of it than composition their blog as hard as they could.

Let's change the subject. I found LED light and bought it. The person who know about electronics will also know it. It is often called "The fourth light". I replaced small bulb with it.

Compare ordinal type of light(Same brightness or so besides candle)

	Name	Life	Cost	Watt
1st	Candle	some hour	$1-	Fire
2nd	Bulb	1000H	$0.5-	60W
3rd	Fluorescent Lamp	6000H	$5-	13W
4th	LED	40000H-	$50-	5W

Though LED has very low energy consumption, its initial cost is quite expensive.
Now I think the most reasonable choice is still fluorescent lamp.
It may be just early to replace old light with LED if it is not to your taste.


I bought it at a camera shop for 380yen($3.20).