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How fast is the Speed of Light?

Nothing we know of can travel faster than light. An object traveling at the speed of light can travel around the world about seven and...

Color of objects – How can we change a color? – Color games for...

When you look around your home, you will see lots of different colors. Most people like to have plenty of color in their home....
Where does light energy come from

How is light created – Where does light come from?

Shut your eyes tight—all you can see is darkness. Now open your eyes again. If it is daytime, you will see that light is all...

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What are Positive and Negative Charges?

There are two kinds of electrical charge—positive and negative. An object that gains electrons has a negative charge. An object that loses electrons has...

How Batteries Work?