懂你英语 Level5 Unit2 Part2

L5-U2-P2 英语流利说 5-2-2 懂你英语 Level5 Unit2 Part2 L5-U2-P2-1 Listening : Light and Color

People have wondered about the nature of light and color since ancient times.

Some people thought that light came from the eye rather than coming into the eye.

To see, light was projected from our eyes to illuminate things as we look at them.

Now we know that what we see is mostly reflected light, like the light from the moon which is reflected sunlight.

Light comes from a light source, such as the Sun, and either enters our eyes directly or after it has reflected off something. Light comes from a light source and either enters our eyes directly or indirectly, after reflecting off something.

(1) People have wondered about the nature of light and color since ancient times.

(2) Some people thought that light came from the eye rather than coming into the eye.

(3) To see, light was projected from our eyes to illuminate things as we look at them.

(4) Now we know that what we see is mostly reflected light, like the light from the moon which is reflected sunlight.

Light enters our eyes directly or after it has reflected off something.

Besides the Sun, what's another example of a direct light source? - a fire or flashlight

In 1666, Sir Isaac Newton showed that when light passes through a prism, it separates into all the other colors.

This clearly demonstrated that light is composed of many different colors.

The difference between colors is due to their wavelength.

A prism separates light into different colors because each color has a different wavelength.

The angle at which a color bends in a prism depends on its wavelength. What determines the color of light? -Its wavelength

The angle at which a color bends in a prism ...depends on its wavelength.

Colors with shorter wavelengths bend more than colors with longer wavelengths.

This explains why red light bends less than yellow light. The reason is because its wavelength is longer.

Of the visible colors, violet light has the shortest wavelength, so it bends the most.

Of the visible colors, which color has the shortest wavelength? -violet

The angle at which a color bends in a prism depends on its wavelength. This clearly demonstrated that light is composed of many different colors.

Besides the Sun, any object that produces its own light is a direct light source.

Of the visible colors, which color has the shortest wavelength? -violet

A prism separates light into its component colors. Each color is a single wavelength of light.

A prism separates light into different colors because each color has a different wavelength.

If you have ever painted, you know that different colors can be combined to create new colors.

For example, if you add white to a color, you lighten it.

However, the three primary colors, red, blue and yellow cannot be made by mixing other colors.

It isn't possible to mix any combination of colors to create red, blue or yellow.

Mixing two primary colors creates a secondary color such as purple, which is made by mixing blue and red.

Mixing three primary colors creates a tertiary color such as brown or gray.

How can you create a secondary color? -Mixing two primay colors. If you have ever painted, you know that different colors can be combined to create new colors.

This explains why red light bends less than yellow light. The primary colors cannot be created by mixing other colors.

Of the visible colors, violet light has the shortest wavelength, so it bends the most.

Mixing two primary colors creates a secondary color such as purple, which is made by mixing blue and red.

Which colors cannot be created by combining other colors? - the primary colors

What happens to a color if add white to it? - It gets lighter. The difference between colors is due to their wavelength. Purple is made by mixing blue and red.

Colors with shorter wavelengths bend more than colors with longer wavelengths.

It isn't possible to mix any combination of colors to create red, blue or yellow.

L5-U2-P2-2 Listening : Color’s Effect

Color are wonderful to look at, but they also affect people in ways besides sight.

They have a powerful effect on how people feel and behave. Artists know this and so do business people who want to influence how people feel about their products and advertisements.

For example, research has shown that people can be more productive if they are working in a blue room.

The color purple is often linked to wealth and royalty and is seen as a mysterious, spiritual color.

Some colors have even been associated with changes in blood pressure. Though color can influence how we feel and act, these effects may depend on personal and cultural factors.

Therefore, it's important not to believe everything you hear about the effects of color.

If two things are associated with each other, they ...are connected in some way.

Though color can influence how we feel and act, these effects may depend on personal and cultural factors. Therefore, it's important not to believe everything you hear about the effects of color.

They have a powerful effect on how people feel and behave. Some colors have even been associated with changes in blood pressure.

Though color can influence how we feel and act, these effects may depend on personal and cultural factors.

The color purple is often linked to wealth and royalty and is seen as a mysterious, spiritual color.

What do effects of color depend on? - personal and cultural factors Color are wonderful to look at, but they also affect people in ways besides sight.

They have a powerful effect on how people feel and behave. Color are wonderful to look at, but they also affect people in ways besides sight.

Different colors can be combined to form other colors.

However, the three primary colors, red, blue and yellow cannot be made by mixing other colors.

Research has shown that people can be more productive if they are working in a blue room.

Though there are differences between cultures, there is a general agreement about some colors.

The color red, for example, is a warm color, associated with energy and excitement in many cultures.

In China, red is associated with fire, energy and good fortune. On the other hand, one experiment showed that exposing students to red before taking a test can have a negative effect.

In fact, of all the colors, research shows that red has the most powerful effect on human behavior.

In China, red is associated with fire, energy and good fortune. On the other hand, one experiment showed that exposing students to red before taking a test can have a negative effect. In fact, of all the colors, research shows that red has the most powerful effect on human behavior.

(1) Though there are differences between cultures, there is a general agreement about some colors.

(2) The color red, for example, is a warm color, associated with energy and excitement in many cultures.

(3) In China, red is associated with fire, energy and good fortune. (4) On the other hand, one experiment showed that exposing students to red before taking a test can have a negative effect.

Certainly, it's interesting and important to better understand the psychological effects of light and color.

To gain a better understanding of these effects, more research is needed.