7 little things to know about rainbows

Two observers cannot see the same color from the same rainbow or can use polarized glasses to make the "rainbow" disappear, are two of the many interesting things about the beautiful natural phenomenon this.

>>>Rare rainbow moments appear in the world

1. Rainbow rarely appears at noon

Rainbows are often seen in the morning and in the evening. It is the phenomenon of sun dispersion when refracted and reflected through raindrops at a temperature of about 42 degrees Celsius. The temperature is usually higher than the appropriate level at noon, so the rainbow rarely appears. city.

2. Rainbow can appear at night

The rainbow appears at night called the moon rainbow. This is because a rainbow is created by light reflected on the surface of the moon, not from direct sunlight.

Photo: scienceblogs.com

3. You don't see the same rainbow colors

The refractive sunlight rays with certain raindrops create a rainbow image in a person's eyes, but at the same time these rays also refract with other raindrops at a different angle in someone's line of sight. Because of this, the colors of the rainbow are seen by each person differently, though standing in the same position and watching the same rainbow.

4. Can't get close to the rainbow

The rainbow moves as the viewer moves, because the light that makes the rainbow forms at a certain distance and angle to the observer's eye. This distance always exists between the viewer and the phenomenon.

5. Can't see all the colors of the rainbow

In addition to the seven primary colors, red, orange, yellow, green, blue, indigo and purple, rainbows are made up of more than a million consecutive colors, including colors that are not seen by the human eye.

6. Many rainbows can be formed at the same time

Observers can see more than one rainbow when light refracts inside the water droplets, and divides into component colors. Double rainbows appear when this happens inside water droplets twice, triple when it happens 3 times, and even 4 times if it happens 4 times.

7. Can make the rainbow disappear

Discovery magazine points out that we can use polarized glasses to block a rainbow. That's because the polarized glass is coated with a layer of molecular bonding vertically, while the light reflected to the water is polarized horizontally.