Today we learned about LIGHT, this is why I have a picture of lamp because lamps making light. We learned a lot of terms today. Two important terms we learned are opaque and transparent.
Opaque means not letting through,
transparent means can go through. The velocity of light = C= 3 x10 ^8 m/s. The velocity of light is faster in space because there is no medium in space, on earth it is a little slower.
Sound is a
pressure wave meaning it needs a medium.
Light is an
electromagnetic wave meaning it needs no medium. Light travels faster than sound.
A light year is the distance light travels in one year. Light is a transverse wave and it has electricity and magnitude. We learned all about the different ranges of frequencies today too. Ranging from radio and tv waves to microwaves to uv radiation to x rays to gamma rays. We also learned about light reflectors, an example of this are books, which don't actually provide light, but reflect it. Things like flashlights or lamps or laptops are not light reflectors. Shadows are places with no light.
Great post Candace! You have really put a lot of effort in your post! It was a good review for class today!
ReplyDeleteVery nice blog! You put a lot of time and effort in this blog! I like how you explain what we learned in class, it was like a real review!
ReplyDeleteGreat blogpost i have learned alot keep up the good work
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