1,People have wondered about the nature of light and color since ancient times.自古以来，人们就对光和颜色的本质感到好奇。
懂你英语Level5Unit2Part2Listening-LightandColor
2,Some people thought that light came from the eye rather than coming into the eye.有些人认为光来自眼睛而不是进入眼睛。
懂你英语Level5Unit2Part2Listening-LightandColor
3,To see, light was projected from our eyes to illuminate things as we look at them.看，光线从我们的眼睛投射出来，照亮我们看着的事物。
懂你英语Level5Unit2Part2Listening-LightandColor
4,Now we know that what we see is mostly reflected light, like the light from the moon which is reflected sunlight.现在我们知道我们所看到的大部分是反射光，就像月球上反射阳光的光一样。
懂你英语Level5Unit2Part2Listening-LightandColor
5,Light comes from a light source, such as the Sun, and either enters our eyes directly or after it has reflected off something.光来自光源，比如太阳，它要么直接进入我们的眼睛，要么在它反射了什么东西之后进入我们的眼睛。
懂你英语Level5Unit2Part2Listening-LightandColor
6,In 1666 Sir isaac Newton showed that when light passes through a prism, it separates into all the other colors.1666年，艾萨克牛顿爵士指出，当光通过棱镜时，它会分解成所有其他颜色。
懂你英语Level5Unit2Part2Listening-LightandColor
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懂你英语Level5Unit2Part2Listening-LightandColor
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7,This clearly demonstrated that light is composed of many different colors.这清楚地表明光是由许多不同的颜色组成的。
懂你英语Level5Unit2Part2Listening-LightandColor
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8,The difference between colors is due to their wavelength.颜色之间的差别是由于它们的波长不同。
懂你英语Level5Unit2Part2Listening-LightandColor
9,A prism separates light into different colors because each color has a different wavelength.棱镜把光分成不同的颜色，因为每种颜色都有不同的波长。
懂你英语Level5Unit2Part2Listening-LightandColor
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10、The angle at which a color bends in a prism depends on its wavelength.颜色在棱镜中弯曲的角度取决于它的波长。
懂你英语Level5Unit2Part2Listening-LightandColor
11,Colors with shorter wavelengths bend more than colors with longer wavelengths. 波长较短的颜色比波长较长的颜色更容易弯曲。
懂你英语Level5Unit2Part2Listening-LightandColor
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12,This explains why red light bends less than yellow light.这就解释了为什么红光弯曲小于黄光
懂你英语Level5Unit2Part2Listening-LightandColor
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13,The reason is because its wavelength is longer.原因是它的波长更长。
懂你英语Level5Unit2Part2Listening-LightandColor
14,Of the visible colors, violet light has the shortest wavelength, so it bends the most.在所有可见的颜色中，紫外光的波长最短，所以它的弯曲度最大。
懂你英语Level5Unit2Part2Listening-LightandColor
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懂你英语Level5Unit2Part2Listening-LightandColor
15,If you have ever painted, you know that different colors can be combined to create new colors.如果你曾经画过，你知道不同的颜色可以组合在一起创造出新的颜色。
懂你英语Level5Unit2Part2Listening-LightandColor
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16,For example, if you add white to a color, you lighten it.例如，如果将白色添加到颜色中，则会使其变亮。
懂你英语Level5Unit2Part2Listening-LightandColor
17,However, the three primary colors, red, blue and yellow cannot be made by mixing other colors.但是，红、蓝、黄这三种原色不能通过混合其他颜色来产生。
懂你英语Level5Unit2Part2Listening-LightandColor
18,It isn't possible to mix any combination of colors to create red, blue or yellow.不可能混合任何颜色组合来产生红色、蓝色或黄色。
懂你英语Level5Unit2Part2Listening-LightandColor
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19,Mixing two primary colors creates a secondary color such as purple, which is made by mixing blue and red.混合两种原色会产生第二种颜色，如紫色，它是由蓝色和红色混合而成。
懂你英语Level5Unit2Part2Listening-LightandColor
20,Mixing three primary colors creates a tertiary color such as brown or gray.把三种原色混合在一起就形成了第三种颜色，如棕色或灰色。
懂你英语Level5Unit2Part2Listening-LightandColor
测验的句子：
1,Different colors can be combined to form other colors.不同的颜色可以组合成其他颜色
懂你英语Level5Unit2Part2Listening-LightandColor
2,A prism separates light into its component colors.棱镜把光分成各种颜色
懂你英语Level5Unit2Part2Listening-LightandColor
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3,Purple is made by mixing blue and red.紫色是由蓝色和红色混合而成的。
4,Each color is a single wavelength of light.每种颜色都是单一波长的光。
懂你英语Level5Unit2Part2Listening-LightandColor
懂你英语Level5Unit2Part2Listening-LightandColor
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