The properties of light evident in nature are utilized by humans through instruments such as lenses and mirrors. While one might think that glass is the main material used to

Why does a pencil look like it is snapped in half when partially placed in a container of water? The short answer is refraction. A more detailed explanation is that

A total solar eclipse is perhaps one of the most dramatic examples of a shadow. When the moon is positioned between the earth and the sun, the moon’s shadow is

Light that the human eye can see is just a small sliver of the electromagnetic spectrum. We use wavelength (λ), measured in nanometers (nm) or micrometers (1 μm = 1000