Diglot Weave: French: Non-Fiction – How to make a rainbow

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Lvl 1 Nouns

The pluie falls softly, freckling exposed peau with tiny gouttelettes that are cool and refreshing. Despite the clouds the jour is bright and the soleil, sitting below 42 degrees above the horizon sends out rayons of light that strike the pluie create a natural tapisserie woven from light and water, a poetic interaction between the soleil‘s rayons and raindrops, a dance of physique and art that captivates the imagination.

Sunlight pierces through the pluie, and each droplet becomes a miniature prisme, bending and scattering the light. Known as réfraction, the processus unfolds at the speed of light.

A arc-en-ciel typically forms when the soleil is lower in the sky, often in the late afternoon or early morning. The specific angle that is key to arc-en-ciel formation is approximately 42 degrees relative to the direction opposite the soleil.

The observateur must be between the soleil and the pluie. The pluie is usually in front of the observateur while the soleil is behind. The 42-degree angle is measured from the direction directly opposite the soleil (called the point anti-solaire), through the observateur‘s head, and up into the sky.

Initially, as lumière du soleil encounters a raindrop, it is refracted, or bent, at the water’s surface. This bending of light occurs because light travels more slowly in water than in air. The change in médium causes the light to change direction slightly, entering the raindrop at a different angle. Inside the droplet, the light beam travels, hitting the droplet’s far side. Here, an intriguing phénomène occurs: partial réflexion. Some of the light escapes, but a significant portion is reflected back into the droplet.

This internal réflexion is crucial for the arc-en-ciel‘s formation. The light, now bouncing within the droplet, heads back towards the droplet’s front. Upon reaching the surface again, it is refracted once more as it exits into the air. This second réfraction further separates the light into its couleurs constituantes.

The colors of a arc-en-ciel, each with its own unique wavelength, are spread out. Violet light bends the most, while red bends the least. As a result, a spectre of colors emerges, forming the familiar arc of a arc-en-ciel. Each raindrop contributes only one color to the observateur‘s eye, depending on the angle of the soleil and the observateur‘s position. When countless gouttelettes each send different colors to the observateur‘s eye at the correct angle, a full arc-en-ciel emerges, a vibrant arc painted across the sky.

It reveals a hidden choreography of light and water, an ephemeral pont between the mundane and the mystical. Each arc-en-ciel is a unique, fleeting moment where nature reveals its ability to create beauté from the simplest of ingredients: lumière du soleil and pluie. It reminds us of the delicate équilibre and interaction of forces that make our monde, urging us to pause and marvel at the everyday miracles that often go unnoticed.

The follow is a breakdown of the processus:

  • Sun’s Position: The soleil needs to be behind the observateur and relatively low in the sky. This is why rainbows are often seen during early morning or late afternoon when the soleil is not too high.
  • Observer’s Position and Angle: The observateur must be between the soleil and the pluie. The pluie is usually in front of the observateur while the soleil is behind. The 42-degree angle is measured from the direction directly opposite the soleil (called the point anti-solaire), through the observateur‘s head, and up into the sky.
  • Lumière Refraction and Reflection: As the lumière du soleil enters and moves through the raindrops, it is refracted (bent) and reflected internally before exiting the droplet. The light is refracted again when it exits the droplet. This double réfraction and internal réflexion spread out the different wavelengths of light, separating them into the colors of the spectre. The specific 42-degree angle is due to the way light is refracted and reflected inside the raindrop.
  • Création of the Rainbow’s Arc: The combination of these angles and the dispersion of light leads to the creation of the circular arc of the arc-en-ciel. Each observateur sees their own personal arc-en-ciel, as the angle will vary slightly depending on their specific location. The higher the soleil rises in the sky, the more the arc-en-ciel arc is pushed down towards the horizon, eventually disappearing when the soleil is too high.

In essence, the beauté of the arc-en-ciel is not just in its colors, but also in the precise natural géométrie and optique that create it. The exact angle of lumière du soleil, combined with the observateur‘s position and the physique of light, come together to paint this ethereal arc across the sky.

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