Why the Sky Is Blue — Visual Physics in 5 Minutes

Science world 🌍 on Instagram: "Why do engineers choose yellow for fog lights? 🌧️ It comes down to the physics of light scattering. Standard white headlights contain shorter blue wavelengths, which hit water droplets in the fog and scatter right back at the driver—creating that dangerous "wall of white" glare (Rayleigh scattering). Yellow light has a longer wavelength, which penetrates the moisture in the air with significantly less scattering. This engineering choice improves contrast and allo

ORMOUS 🌒 on Instagram: "What you’re seeing is the Sun’s true color — something we never see from Earth. From the ground, the Sun looks yellow, orange, or red because Earth’s atmosphere scatters shorter wavelengths like blue and violet, a process called Rayleigh scattering. This filtering makes sunlight appear warmer in color. In space, without the atmosphere, the Sun shines pure white, emitting all visible wavelengths equally. It’s like a full rainbow compressed into a single point of light. As