10.Incandescent bulbs convert only 10 percent of the energy they draw into light, which is why Europe will outlaw them by 2017. Most of the electricity turns into unwanted heat.
白炽灯只能将通过自身的电能的10%转化为光能,而大部分电能都转化成热能浪费掉了。因此欧洲将在2017年禁用白炽灯。
11.In the confined space of an Easy-Bake oven, a 100-watt bulb can create a temperature of 325 degrees Fahrenheit.
在一个封闭空间——比如Easy-Bake玩具烤炉里,一个100瓦的白炽灯泡可以达到华氏325度(约163摄氏度)的高温。
12.Visible light makes up less than one ten-billionth of the electromagnetic spectrum, which stretches from radio waves to gamma rays.
在覆盖了从无线电波到伽马射线的电磁光谱中,可见光只占不到百亿分之一的比例。
13.Goldfish can see infrared radiation that is invisible to us. Bees, birds, and lizards have eyes that pick up ultraviolet.
金鱼可以看见我们看不见的红外线。蜜蜂,鸟类和蜥蜴则有着可以看见紫外线的眼睛。
14.Photography means “writing with light.” English astronomer John Herschel, whose father discovered infrared, coined the term.
摄影其实就是“用光来书写”。这个说法是英国宇航员John Herschel(他的父亲发现了红外线)创造的。
15.Shoot now: The “golden hour,” just after sunrise and before sunset, produces the prettiest shadows and colors for photographs.
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