Why is there a rainbow in the sky after the rain?

There is a little problem with your topic, that is, the sun will only have a rainbow after the rain, you see that there is no rainbow after the rain in winter, and the reason should be this, after the showers in summer, the sky will clear immediately.

After the sun hits the ground, it evaporates the water on the ground to form water vapor, and when the steam rises, there will be many very small water droplets in the air, which will be refracted under the sun, and the light will be divided into seven colors: red, orange, yellow, green, blue, and purple, so there is a rainbow.

After the rain, the sun is exposed, and in the sky opposite the sun, a semicircular rainbow appears. Rainbows are caused by the emission and refraction of sunlight into water droplets in the sky.

When the sun's light passes through the prism, it is refracted and the white light is broken down into seven color bands: red, orange, yellow, green, blue, indigo, and violet. The sky after the rain is filled with countless small water droplets, which are like a prism, refracting the sun's light into seven colors: red, orange, yellow, green, blue, indigo, and violet, which is why we see rainbows.

After the rain, the air humidity is high, the sky clears, and the sunlight is refracted and reflected by many small water droplets.

Rain is low air pressure. The density of water vapor is smaller than that of air, when the air contains more water vapor, the air density will become smaller, and the air molecules with high pressure will be squeezed out by the water vapor and diffuse to the peripheral areas of the rainfall zone, the air pressure will decrease, and when the air pressure is low to a certain extent, the amount of water vapor will be enough to make it rain.

Barometric pressure is the abbreviation of atmospheric pressure, which refers to the atmospheric pressure acting on a unit area, and the international unit is Pascal, referred to as Pascal, and the symbol is Yinhong Pa.

In meteorology, people generally use kilopascal (kpa) or hectopa (hpa) as the unit of air pressure, and the air pressure decreases exponentially with the increase in altitude.

During the year, the air pressure in winter is higher than in summer, and in the atmosphere, the higher the temperature and the expansion of the gas, the less dense the gas will be, and the lower the air pressure.

When the sunlight hits the water droplets in mid-air, the light is refracted and reflected, forming an arched colorful spectrum on the sky, which is red, orange, yellow, green, blue, indigo, and purple from the outer circle to the inner circle.

Rainbows are caused by the dispersion and reflection of small water droplets in the sky that are almost spherical in the sky. When sunlight hits a water droplet, it is incident at different angles at the same time, and it is reflected at different angles within the water droplet.

The reflection of 40 to 42 degrees is the most intense, resulting in the rainbow we see. To cause this reflection, sunlight enters the water droplet, first refracts once, then reflects on the back of the droplet, and finally refracts again when it leaves the droplet, for a total of two refractions after one reflection.

Because water has a dispersive effect on light, the refractive index of light of different wavelengths is different, red light has a smaller refractive index than blue light, and blue light has a greater deflection angle than red light. Because the light is reflected inside the water droplet, the observer sees the spectrum upside down, with red light at the top and other colors at the bottom.

As a result, rainbows and neon are not the same heights, and the order of color cascades is reversed. A rainbow means that light is refracted twice and reflected once, while neon is light that is refracted twice and reflected twice.

The phenomenon of refraction and reflection of light.

Rainbows appear in the sky after rain because light is refracted and reflected as it passes through a layer of media. In the morning after the rain, the tiny droplets of water left in the air are irradiated by the sunlight, forming a semi-circular layer of small water droplets, which is the "manufacturing factory" of the rainbow.

When the light hits the water droplets, the refractive index of the water is higher than that of the air, and the light is tilted towards the water, and at the same time, a part of the land is reflected. As the light travels through the water, its direction shifts until it shoots out of the water. When the light hits the air, it will be refracted twice due to the change of the medium, causing the spectrum of the rainbow to be separated, forming seven colors: red, orange, yellow, green, cyan, blue, and violet, and these colors are mapped to present a beautiful rainbow.

It is worth mentioning that the color of the rainbow appears in a fixed order, starting from the outermost side, it is red, orange, yellow, green, cyan, blue, and violet, because the light of different colors is refracted at different angles in the water droplets, so they show different colors. <>

The reason why there is a rainbow in the sky after the rain is that there will be a large number of small water droplets suspended in the air after the rain, and when the light passes through these crystals, the light will be refracted into the air. The visible light of sunlight is actually made up of light of many colors. The light hits the air, and it is a small crystal that is close to a sphere.

The wavelengths of light are not the same, and different wavelengths of light can refract water droplets, causing colorful spectra to disperse across the sky, resulting in various spectrums. It is refracted before it hits the water droplet, then it is reflected on the back of the water droplet, and finally it is refracted again when it leaves the water droplet, it is reflected once, it is refracted twice, and it has experienced a total of one reflection and two refractions. Why do rainbows bend?

A rainbow is an optical phenomenon in meteorology. It is usually seen with the naked eye as an arch, like a bridge, and is known as the "Rainbow Bridge". The rainbow is arc-shaped, and it also has a lot to do with the shape of the earth, because the earth's surface is a curved surface and is covered by a thick atmosphere, the water content in the air after the rain is higher than usual, and the small water droplets in the air formed by sunlight refraction, and at the same time, because the atmosphere on the earth's surface is arc, sunlight is refracted on the surface, forming the arched rainbow we see.

Why is there a rainbow on a sunny day? If there is a rainbow after rain because there are a lot of water molecules in the air, then sometimes there is a rainbow on a sunny day. What's going on?

Sometimes precipitation cloud systems are not visible in the sky, but there are strong winds in the mid- and low-level (non-terrestrial) atmosphere. The wind will carry raindrops from distant precipitation clouds to the vicinity of the rainbow site. If the surface is hot again, the updrafts are strong enough to hold the water current, but not to evaporate the droplets quickly.

That is, the rainbow is coming on a sunny day, and the larger the water droplets in the air, the brighter the rainbow will be. What is the difference between rainbow and rainbow? Rainbows and rainbows are different in that they are fully reflected once in the water droplets of the sun's rays, and they are rainbows and are fully reflected twice.

Pay in the raindrops, the second internal reflection. Therefore, the arc ribbon and the rainbow are just the opposite.

Rainbows are caused by the dispersion and reflection of small water droplets formed by the rain when sunlight hits the sky. When sunlight hits a water droplet, it will be incident at different angles at the same time, and it will be refracted at different angles within the water droplet. The reflection is strongest at 40 to 42 degrees, forming the rainbow we see.

In this reflection, sunlight enters the water droplet, is refracted once, then reflects on the back of the droplet, and finally refracts again when it leaves the droplet. Because water has a dispersive effect on light, the refractive index of light of different wavelengths is different, and the refractive angle of blue light is larger than that of red light. Since the light is reflected inside the water droplet, the observer sees the spectrum upside down, with red light at the top and other colors at the bottom, and then up

Red (red) - orange - yellow - green - blue - violet: below

Dear, can I help you?,10,When the light arrives from one medium to another, the direction of travel will change, that is, the refraction of light, after the rain, there will be a lot of small water droplets in the air boy's friendship, and the seven kinds of light emitted by the sun will appear on the small water droplets, 2, because it has just rained, and the weather is sunny, the water evaporates in the air and gathers to form small water droplets, and the refractive index of the water droplets and the air is different after being irradiated by the sun, so the light is reduced to seven kinds of monochromatic light, so you can see the rainbow, 0,