/u/RedditLloyd's posts in /r/askscience

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Only show posts with narrations

Can lightning really crack rocks and damage mountains like we see in fiction?

2551 upvotes

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Why can the lone star tick bite make you allergic to red meat, if that very same allergene your body starts reacting to has always been present in the meat itself?

52 upvotes

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At what temperature is an object considered "too hot" by tactile nerves under the skin, and an "immediately retract the limb!" reflex is issued? Does such sensitivity vary across different skin regions?

19 upvotes

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If not even light has the speed necessary to escape the event horizon of a black hole, does it mean that beyond it things fall towards the singularity at superluminal speed?

3 upvotes

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If we had a spaceship capable of almost reaching the speed of light, how long would supplies need to last to reach Proxima Centauri, taking into account time dilation?

1 upvotes

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What prevents air, the atmosphere, being gravitationally pulled like everything else, from crushing any form of life on Earth?

1 upvotes

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Why do some vaccines last decades, while others lose efficacy more quickly?

1 upvotes

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Why does sped up footage sound more high-pitched? Why does slowed down footage sound lower?

1 upvotes

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What is the temperature limit beyond which something is "too hot" for human touch and it starts to hurt, activating a reflex to retract the limb? Is it equal across the whole skin?

1 upvotes

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Is there an event with a 100% probability of happening?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Can lightning really crack rocks and damage mountains like we see in fiction?	2551
Why can the lone star tick bite make you allergic to red meat, if that very same allergene your body starts reacting to has always been present in the meat itself?	52
At what temperature is an object considered "too hot" by tactile nerves under the skin, and an "immediately retract the limb!" reflex is issued? Does such sensitivity vary across different skin regions?	19
If not even light has the speed necessary to escape the event horizon of a black hole, does it mean that beyond it things fall towards the singularity at superluminal speed?	3
If we had a spaceship capable of almost reaching the speed of light, how long would supplies need to last to reach Proxima Centauri, taking into account time dilation?	1
What prevents air, the atmosphere, being gravitationally pulled like everything else, from crushing any form of life on Earth?	1
Why do some vaccines last decades, while others lose efficacy more quickly?	1
Why does sped up footage sound more high-pitched? Why does slowed down footage sound lower?	1
What is the temperature limit beyond which something is "too hot" for human touch and it starts to hurt, activating a reflex to retract the limb? Is it equal across the whole skin?	1
Is there an event with a 100% probability of happening?	1