{"id":1981,"date":"2024-02-01T12:12:34","date_gmt":"2024-02-01T12:12:34","guid":{"rendered":"https:\/\/biotrux.com\/?p=1981"},"modified":"2024-02-01T12:12:37","modified_gmt":"2024-02-01T12:12:37","slug":"why-do-rainbows-appear-only-after-rainfall","status":"publish","type":"post","link":"https:\/\/biotrux.com\/why-do-rainbows-appear-only-after-rainfall\/","title":{"rendered":"Why Do Rainbows Appear Only After Rainfall?"},"content":{"rendered":"\n
Have you ever wondered about the magical arc of colors that appears in the sky after rainfall? That’s a rainbow, a beautiful natural phenomenon that never fails to bring a smile to our faces. But what causes this delightful spectacle? And why do rainbows only appear after rainfall?\u00a0<\/p>\n\n\n\n
This article will unravel some mysteries behind rainbows. I’ll delve into the science of how they’re formed and share some tips on the best conditions for rainbow spotting. <\/p>\n\n\n\n
Let’s get started.<\/p>\n\n\n\n
Rainbows are formed through a process involving both the refraction and reflection of light, specifically sunlight, within water droplets such as rain or fog. Here’s a step-by-step explanation of how rainbows are formed:<\/p>\n\n\n\n
1. Refraction: When sunlight enters a water droplet, it slows down and bends. This is known as refraction.<\/p>\n\n\n\n
2. Reflection: The refracted light is then reflected off the inside surface of the droplet.<\/p>\n\n\n\n
3. Refraction (again): As this reflected light leaves the droplet, it is refracted again at multiple angles.<\/p>\n\n\n\n
4. Dispersion: Sunlight is made up of many di<\/a>fferent wavelengths, or colors, that travel at different speeds when passing through a medium. This causes the white light to split into different colors. Longer wavelengths appear as red, and shorter wavelengths appear as blue or violet.<\/p>\n\n\n\n 5. Observation: The observer must be positioned so the sun is behind them and the rain or fog is in front of them. The lower the sun in the sky, the more of an arc of a rainbow the observer will see \u2013 it must be less than 42\u00b0 in the sky.<\/p>\n\n\n\n It’s important to note that a rainbow is an optical illusion\u2014it 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. <\/p>\n\n\n\n In fact, rainbows are actually full circles, but viewers on the ground can only see the light reflected by raindrops above the horizon. Because each person’s horizon is a little different, no one actually sees a full rainbow from the ground. Each person sees a unique rainbow, as everyone has a different antisolar point and horizon<\/a>.<\/p>\n\n\n\nWhy Do Rainbows Appear Only After Rainfall?<\/h2>\n\n\n