The rainbow is always formed in the direction

A rainbow is a natural spectrum appearing in the sky after a rain. It is produced by dispersion of sunlight by tiny water droplets, present in the atmosphere. The water droplets act like small prisms. When a ray of light falls on water drop (or raindrop) it undergoes refraction and dispersion to form a spectrum this spectrum undergoes internal refraction (inside the raindrop) and finally refracted again when it comes out of the raindrop. After the dispersion of light and internal reflections, the band of colors reaches observer's eye in the form of a rainbow. A rainbow is always formed in the direction opposite to that of the sun.

The correct answer is Opposite to the sun. Key Points • A rainbow is always generated in the opposite direction of the Sun, so that sunlight striking water droplets (which act as prisms) can be easily refracted and dispersed, resulting in a rainbow. • A rainbow is a meteorological phenomenon that occurs when light is reflected, refracted, and dispersed in water droplets, resulting in a spectrum of light seen in the sky. • It's shaped like a multicolored circular arc. Sunlight-induced rainbows always appear in the sky area directly opposite the Sun. • Rainbows can take the form of entire circles. The viewer, on the other hand, usually only sees an arc created by lighted droplets above the ground, centered on a line from the sun to the observer's eye. • The arc of a p rimary rainbow is red on the outside and violet on the inside. • Light is refracted when it enters a droplet of water, reflected internally on the rear of the droplet, then refracted again as it leaves it, resulting in this rainbow. • A second arc appears outside the primary arc in a double rainbow, with the sequence of the colors reversed, with red on the inner side of the arc. The light is reflected twice on the inside of the droplet before leaving it, which causes this. Key Points Reflection • Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns to the medium from which it originated. Common examples include the reflection of light, so...

April Showers to March’s Lions and Lambs Although light rays may exit the drop in more than one direction, a high density of the rays emerge at a minimum angle of deviation from the direction of the incoming rays. The observer thus sees the highest intensity looking at the rays that have minimum deviation, which form a Understand the science of appearance of different colors of the rainbow Occasionally, a secondary bow may be observed, which is considerably less intense than the primary bow and has its colour sequence reversed. The secondary rainbow has an angular radius of about 50° and hence is seen outside of the primary bow. This bow results from light that has undergone two internal reflections within the water drop. Higher-order rainbows, resulting from three or more internal reflections, are exceedingly weak and hence are rarely observed.

A rainbow is a multicolored arc made by light striking water droplets. The most familiar type rainbow is produced when sunlight strikes raindrops in front of a viewer at a precise angle (42 degrees). Rainbows can also be viewed around fog, sea spray, or waterfalls. A rainbow is an optical illusion—it does not actually exist in a specific spot in the sky. The appearance of a rainbow depends on where you're standing and where the sun (or other source of light) is shining. The sun or other source of light is usually behind the person seeing the rainbow. In fact, the center of a primary rainbow is the antisolar point, the imaginary point exactly opposite the sun. Rainbows are the result of the refraction and reflection of light. Both refraction and reflection are phenomena that involve a change in a wave's direction. A refracted wave may appear "bent," while a reflected wave might seem to "bounce back" from a surface or other wavefront. Light entering a water droplet is refracted. It is then reflected by the back of the droplet. As this reflected light leaves the droplet, it is refracted again, at multiple angles. The radius of a rainbow is determined by the water droplets' refractive index. A refractive index is the measure of how much a ray of light refracts (bends) as it passes from one medium to another—from air to water, for example. A droplet with a high refractive index will help produce a rainbow with a smaller radius. Saltwater has a higher refractive index than fresh...

What Is a Rainbow? A rainbow is a multi-colored, arc-shaped phenomenon that can appear in the sky. The colors of a rainbow are produced by the reflection and dispersion of light through water droplets present in the atmosphere. An observer may perceive a rainbow to be located either near or far away, however, this phenomenon is not actually located at any specific spot. Instead, the appearance of a rainbow depends entirely upon the position of the observer in relation to the direction of light. In essence, a rainbow is an optical illusion. Rainbows present a spectrum made up of seven colors in a specific order. In fact, school children in many English-speaking countries are taught to remember the name “Roy G. Biv” as a mnemonic device for remembering the colors of a rainbow and their order. “Roy G. Biv” stands for: red, orange, yellow, green, blue, indigo, and violet. The outer edge of the rainbow arc is red, while the inner edge is violet. How Is a Rainbow Formed? A rainbow is formed when light (generally sunlight) passes through water droplets hanging in the atmosphere. The light waves change direction as they pass through the water droplets, resulting in two processes: reflection and refraction. When light reflects off a water droplet, it simply bounces back in the opposite direction from where it originated. When light refracts, it takes a different direction. Some individuals refer to refracted light as “bent light waves.” A rainbow is formed because white light enter...

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