What Is Ultraviolet Radiation?
Ultraviolet radiations are electromagnetic rays which are like light rays, but are not visible to the human eye. It is a part of the spectr
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Why Is Grass Green?
Why Is Grass Green? The green color in grass-and in most other plants-comes from chloroplast within the cells, each of which contains four d
What Makes the Colors in a Rainbow?
After a shower of rain there is often a rainbow. Rainbows form when the sun begins to shine through the clouds while the air…
When Can a Rainbow Be Seen?
When Can a Rainbow Be Seen? After a shower of rain there is often a rainbow. Rainbows form when the sun begins to shine through the clouds w
What Is Glitter and Where Did It Come From?
What Is Glitter and Where Did It Come From? Glitter is made up of hundreds — even thousands or tens of thousands of tiny pieces of various