Light and Optics Photo

This is the picture I created using a flashlight and cup of water. I think that it is really cool that rainbows occur naturally, but they can also be created artificially. To do this I pointed the flashlight at an angle towards the water to get it to reflect a rainbow on the table. This worked because the reflection of light in water results in a spectrum of light appearing. It shows up in colors because the light is first refracted going through the surface of the water, reflected off the back, and then refracted again as it leaves the water. The amount of light that is refracted depends on its wavelength, which gives it its color. Certain colors have shorter wavelengths than others so this is why we can differentiate the colors from one another.

Standard 6.3

Explain how objects like the earth and metals can be permanent or temporary magnets.

The earth is like a big magnet. The core is made out of metals(because dense elements sink) and the outer core is molten, ionized metals. Because it is metal it conducts, meaning that charges flow easily. Earth is also moving and spinning so it increases movement of charges. The moving charges in the outer core generate earths magnetic field.

There are three types of magnetic material: Non magnetic(no domains), magnetic material(domains but not lined up), and magnet(domains all lined up). A magnetic domain is a group of atoms aligned so that their magnetic fields add together to make a stronger field. Electrons have tiny magnetic fields because they are charged and spinning.