It was a lake of rainbow light, in which, for a short while, I lived like a dolphin.

这里成了一个虹光的湖沼，片刻之间，我生活得像一只海豚。

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At this time, I suddenly remembered that not long ago science class the teacher talked about "Rainbow Light" a lesson is issued by the sun looks white, but it is the most complex color.

这时，我忽然想起，不久前科学课上老师讲过“七色光”一课，太阳看起来发出的是白光，但这却是最复杂的颜色。

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Researchers have trapped a rainbow - slowing light to a near-stop - in an array of 25, 000 "invisibility cloaks", each smaller than a hair's breadth.

BBC: 'Cloaking' idea traps a rainbow

The website explains how a rainbow is made from light and water - with help from the sun.

BBC: rainbow

Therefore you get more consistent colors, no rainbow effect and also, a lot longer life then light bulb based models.

ENGADGET: Samsung shipping LED based DLP - HL-S5679W HD