Why were red giants named so?
Owen AtkinsonBecause the star shines red and it is a giant due to expansion from original size.
The reason a star expands and cools is that when hydrogen fuses to form helium, the core shrinks and the outer hydrogen shell expands greatly due to the energy released by heating the helium core. Cooler stars shine red.
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Claire AnctilRed giants get their name from the fact that they are big, bright stars that glow red due to their low surface temperatures.
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
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