SciShow
The Real Reason the Sky is Blue
If someone (say, a small child) asks you why the sky is blue, you might dive into an explanation of Rayleigh scattering. But if you want to give them a way cooler explanation, you can tell them it's because of bacteria. Hosted by: Stefan...
SciShow
Did Vikings Use These Crystals To Navigate?
The Vikings were renowned navigators at a time before magnetic compasses were invented. So how'd they manage it? Their secret may have been these pretty-pointed crystals of calcite called Iceland spar, and this month's SciShow Rocks Box...
Veritasium
World's Lightest Solid!
Aerogels are the world's lightest (least dense) solids. They are also excellent thermal insulators and have been used in numerous Mars missions and the Stardust comet particle-return mission. The focus of this video is silica aerogels,...
Curated Video
Why is the Sky Blue? - Sky Color Explained
The atmospheric composition of the sky affects the colours we see. From blue horizons to red sunsets, why do we see colours the way we do? Physics - Our Solar System - Learning Points. Light is made up of different wavelengths. Our...
Curated Video
Why is the Sky Blue? - Atmospheric Colors
Find out why the sky is blue. Physical processes -Light - White light Learning Points The Sun emits white light. White light can be split into the spectrum of colours by a prism. Different colours have different wavelengths. A Twig...
Let's Tute
Why is the Sky Blue and the Sun Yellow?
In this video, we explore why the sky looks blue and the sun looks yellow. We learn about the concept of Rayleigh scattering and how it interacts with the atmosphere to create this phenomenon. We also discover why the sun appears red or...
Let's Tute
Why is the Ocean Blue?
The video explains the scientific reason behind the blue color of the ocean and how it differs from the blue color of the sky. It also touches on the adaptation of organisms living in deep waters and the variations of ocean colors due to...
Physics Girl
The ULTRAVIOLET CATASTROPHE
How did the field of quantum mechanics come about in the first place? The Rayleigh-Jeans catastrophe, also known as the ultraviolet catastrophe was a prediction by the Rayleigh-Jeans law that a blackbody would radiate infinite amounts of...