/u/gomi-panda's posts in /r/askscience

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Why are you at greater risk to suffer a concussion after the first one?

137 upvotes

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How does novacaine and lidocaine actually block the pain response from the body? Bonus question: Since our physical nervous system does not spread over every inch of our body, how do we feel pain across our skin?

11 upvotes

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I have a bunch of noob questions on star formations. Please help answer?

9 upvotes

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Do cells have specific sizes or can they be incredibly large or incredibly small?

8 upvotes

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I was always taught that you get stronger when exercising because your muscles "tear" and they repair by adding new growth. Recently I learned that a certain muscle cell metastasizes, leaving one copy for future use and the other copy embeds into the muscle. What exactly happens for muscle growth?

8 upvotes

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How are mountain heights measured?

7 upvotes

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Do different food colors affect the body in any way? Why are some banned in the US that are in use in the US?

6 upvotes

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Why were cesium atoms used as the gold standard for telling time?

6 upvotes

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Are our planets, including bodies in the Asteroid & Kuiper Belt generally revolving on the same 2D-sh plane (like a disc) or do any bodies rotate on a 3D plane (creating more of a spherical arc)?

1 upvotes

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What are isotopes exactly, and why do they matter? What are isotopes made of?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Why are you at greater risk to suffer a concussion after the first one?	137
How does novacaine and lidocaine actually block the pain response from the body? Bonus question: Since our physical nervous system does not spread over every inch of our body, how do we feel pain across our skin?	11
I have a bunch of noob questions on star formations. Please help answer?	9
Do cells have specific sizes or can they be incredibly large or incredibly small?	8
I was always taught that you get stronger when exercising because your muscles "tear" and they repair by adding new growth. Recently I learned that a certain muscle cell metastasizes, leaving one copy for future use and the other copy embeds into the muscle. What exactly happens for muscle growth?	8
How are mountain heights measured?	7
Do different food colors affect the body in any way? Why are some banned in the US that are in use in the US?	6
Why were cesium atoms used as the gold standard for telling time?	6
Are our planets, including bodies in the Asteroid & Kuiper Belt generally revolving on the same 2D-sh plane (like a disc) or do any bodies rotate on a 3D plane (creating more of a spherical arc)?	1
What are isotopes exactly, and why do they matter? What are isotopes made of?	1