Today we learned about lasers and light reflection. The picture I have is of a laser beam reflecting off my hand. The types of reflection we learned about were diffuse and specular. The reflection of the laser on my hand is a diffuse reflection. This type of reflection occurs when the surface the light is reflecting off isn't smooth relative to the wavelength of the light. This causes the waves to scatter instead of reflect in a uniform fashion. This can be seen when the area around the impact of the light is lit up with the color. A specular reflection is when the light waves bounce off the surface without scattering, this is because the surface is smooth relative to the wavelength. Some of these surfaces include mirrors, or calm water. We also covered blending light. The primary colors of light are red, blue, and green. Not red, blue, and yellow. When you combine these colors, you get other colors like yellow, cyan, and magenta. Overall, today was a pretty cool lesson. The characteristics of light are different then what I would've imagined.
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