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

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When I watch a TV programme from the 70s or 80s on my HDTV, it's blurry almost to the point of unintelligibility. Is that how it looked back in the day? Am I misremembering my youthful TV experiences? Did we not notice the blurriness?

157 upvotes

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Why do muscles get tense? Why does squeezing them (e.g. massage), elongating them (e.g. stretching), heating them (e.g. hot shower), or taking drugs (e.g. diazepam) reduce the tension?

68 upvotes

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In recycling, is rusty iron any different to iron that's fresh off the forge?

42 upvotes

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Do men experience hormonal cycles that parallel women's menstrual cycles?

26 upvotes

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When we learn a new skill, our brain creates new pathways that are strengthened each time we practise the skill. Does the same thing happen when an addict uses their drug of choice?

24 upvotes

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Why do people experience cravings years after they have quit the substance to which they were addicted?

22 upvotes

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Does the sun "stop" at what we call the "surface", or are the planets floating through it's "atmosphere", the way a cloud floats in the atmosphere of the Earth?

16 upvotes

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[Orbital mechanics] Does the Earth move forward in its orbit with greater velocity when the moon is ahead, and slower when the moon is behind?...

13 upvotes

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What causes a gun barrel to rise when I shoot? If I hang upside-down and shoot, will the barrel "rise" away from the anchor point (i.e. my feet) or away from the source of gravity (i.e. the Earth)? What would happen if both are absent (i.e. in space)? Or is something else going on?

12 upvotes

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Do women have to schedule surgery around their menstrual cycle, especially surgery relating to the reproductive system?

11 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
When I watch a TV programme from the 70s or 80s on my HDTV, it's blurry almost to the point of unintelligibility. Is that how it looked back in the day? Am I misremembering my youthful TV experiences? Did we not notice the blurriness?	157
Why do muscles get tense? Why does squeezing them (e.g. massage), elongating them (e.g. stretching), heating them (e.g. hot shower), or taking drugs (e.g. diazepam) reduce the tension?	68
In recycling, is rusty iron any different to iron that's fresh off the forge?	42
Do men experience hormonal cycles that parallel women's menstrual cycles?	26
When we learn a new skill, our brain creates new pathways that are strengthened each time we practise the skill. Does the same thing happen when an addict uses their drug of choice?	24
Why do people experience cravings years after they have quit the substance to which they were addicted?	22
Does the sun "stop" at what we call the "surface", or are the planets floating through it's "atmosphere", the way a cloud floats in the atmosphere of the Earth?	16
[Orbital mechanics] Does the Earth move forward in its orbit with greater velocity when the moon is ahead, and slower when the moon is behind?...	13
What causes a gun barrel to rise when I shoot? If I hang upside-down and shoot, will the barrel "rise" away from the anchor point (i.e. my feet) or away from the source of gravity (i.e. the Earth)? What would happen if both are absent (i.e. in space)? Or is something else going on?	12
Do women have to schedule surgery around their menstrual cycle, especially surgery relating to the reproductive system?	11