#843 What color is the sea?
What color is the sea? It is technically blue, but that depends on the depth and what particles are in the water. The sky is blue because the blue light…
What color is the sea? It is technically blue, but that depends on the depth and what particles are in the water. The sky is blue because the blue light…
Why can mantis shrimp see so many colors? It turns out that they can’t see more colors than we can. They just process the way they see colors differently. Manis…
Why are clouds white? Because the water particles in the clouds scatter light equally. When light comes out of the sun, it is white. That is to say, it emits…
Watch on YouTube Why does blood show up under UV light? Because it absorbs all of the light and appears completely black. When we watch crime movies, the police often…
How do fireflies glow? They combine a chemical called luciferin, an enzyme called luciferases, oxygen, and fuel. Fireflies are not actually flies; they are beetles. They are also not one…
Why are sunsets such beautiful colors? The beautiful colors of sunrises and sunsets are caused because light rays are scattered by particles in the sky. Light has different wavelengths and…
Why is glass transparent? Glass is transparent because light photons don’t have enough energy to excite the molecules in the glass. There are two things we need to look at…
What is the opposite of white? Either black or transparent. Let’s look at what colors are, what white is, and what black and transparent are. Colors appear when an object…
I learned this today. A fiber optic cable works by sending information encoded in a beam of light. Different technologies send information in different ways. A telegraph and an old…
I learned this today. Light can’t escape from a black hole because of the curvature of space caused by gravity. In physics, gravity is the weakest of the four fundamental…