Questions You Always Wanted To Know The Answer To

jason_els

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Why is the sky blue?
The blue color of the sky is due to Rayleigh scattering. As light moves through the atmosphere, most of the longer wavelengths pass straight through. Little of the red, orange and yellow light is affected by the air.
However, much of the shorter wavelength light is absorbed by the gas molecules. The absorbed blue light is then radiated in different directions. It gets scattered all around the sky. Whichever direction you look, some of this scattered blue light reaches you. Since you see the blue light from everywhere overhead, the sky looks blue. - Science Made Simple


Here's a question I've always wanted to know the real answer to: what causes that sense of deja vu? Everytime I experience, it freaks me out, because I can almost predict what's going to happen next, or what the person with me is going to say, etc. It's such an overwhelming feeling, that it's almost like being outside of your body.

What causes that?

Deja vu seems to be caused by a strange phenomenon of human perception. Sometimes we see something with one eye before we see it with the other. We kinda do a mini Marty Feldman. The one eye transmits the information to the brain but because the other eye was engaged elsewhere, it doesn't follow immediately. This gives the brain the sensation of experiencing the same event twice.
 

IntoxicatingToxin

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Here's a question I've always wanted to know the real answer to: what causes that sense of deja vu? Everytime I experience, it freaks me out, because I can almost predict what's going to happen next, or what the person with me is going to say, etc. It's such an overwhelming feeling, that it's almost like being outside of your body.

What causes that?

According to my new Psychology book:

"Sometimes, being in a context similar to one we've been in before may trigger the experience of deja vu (French for 'already seen') - that eerie sense that "I've been in this exact situation before." This fleeting experience happens most commonly to well-educated, imaginative young adults, especially when tired or stressed. The two-thirds of people who report having experienced deja vu often wonder "How could I recognize a situation I'm experiencing for the first time?" Those who suppose a paranormal explanation may think of reincarnation ("I must have experienced this in a previous life") or precognition ("I viewed this scene in my mind before experiencing it"). Posing the question differently ("Why do I feel as if I recognize this situation?"), we can see how our memory system might produce deja vu. If we have previously been in a similar situation, the current situation may be loaded with cues that unconciously retrieve the earlier experience. (We take in and retain vast amounts of information while hardly noticing and often forgetting where it came from). Thus, if in a similar context you see a stranger who looks and walks like one of your friends, the similarity may give rise to an eerie feeling of recognition. Having awakened a shadow of that earlier experience, you may think, "I've seen that person in this situation before." Or perhaps, suggests James Lampinen, a situation seems familiar when moderately similar to several events. Imagine you briefly encounter my dad, my brothers, my sister, my children, and a few weeks later meet me. Perhaps you might think, "I've been with this guy before." Although no one in my family looks or acts just like me (lucky them), their looks and gestures are somewhat like mine and I might for a "global match" to what you had experienced.
 

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According to my new Psychology book:

"Sometimes, being in a context similar to one we've been in before may trigger the experience of deja vu (French for 'already seen') - that eerie sense that "I've been in this exact situation before." This fleeting experience happens most commonly to well-educated, imaginative young adults, especially when tired or stressed. The two-thirds of people who report having experienced deja vu often wonder "How could I recognize a situation I'm experiencing for the first time?" Those who suppose a paranormal explanation may think of reincarnation ("I must have experienced this in a previous life") or precognition ("I viewed this scene in my mind before experiencing it"). Posing the question differently ("Why do I feel as if I recognize this situation?"), we can see how our memory system might produce deja vu. If we have previously been in a similar situation, the current situation may be loaded with cues that unconciously retrieve the earlier experience. (We take in and retain vast amounts of information while hardly noticing and often forgetting where it came from). Thus, if in a similar context you see a stranger who looks and walks like one of your friends, the similarity may give rise to an eerie feeling of recognition. Having awakened a shadow of that earlier experience, you may think, "I've seen that person in this situation before." Or perhaps, suggests James Lampinen, a situation seems familiar when moderately similar to several events. Imagine you briefly encounter my dad, my brothers, my sister, my children, and a few weeks later meet me. Perhaps you might think, "I've been with this guy before." Although no one in my family looks or acts just like me (lucky them), their looks and gestures are somewhat like mine and I might for a "global match" to what you had experienced.
Thanks for your response, Mama. The rational side of me wants to believe that there is a scientific reason behind deja vu, but I still get the sense that there's more to it. In addition to having semi-frequent episodes of deja vu, sometimes those incidents are not "I've done this before" but instead "oh my God, I just saw this exact scene play out in a dream last night."

Maybe that's more premonition, I don't know...I just know that some of my deja vu episodes seem to be rooted in something I dreamed about and of me having that awareness and recollection of the dream as the "live" event is happening.

Geez, am I sounding loony tunes here?? :tongue:
 

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When you were a kid and you wanted to stick stuff and you couldn't find glue didn't your mum tell you to make flour and water glue?
No, she gave me scotch tape. :tongue:
If men had tits would they truly stay in all day playing with them :) [/quote] Are you kidding? If they got to keep their dicks too, they would spend all day wanking and cumming on their tits then licking it off!!

Now I want to know why looking at the sun (or a bright light) can help bring on a sneeze?! :wink::tongue:
It's a mild sun allergy common in people with blue eyes or blonde or red hair. Brunettes and people with brown eyes don't have that issue.

Why do men have nipples?
To give horny partners something to play with. :smile:
 

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jason_els

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If we had no skins would that happen to us then?


We'd die. Opportunistic infections would penetrate into our bodies quickly. Failing that, we'd have no protection from sun and your body would rapidly dehydrate as the cells become pre-cancerous from UV ray exposure.
 

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Here's a question I've always wanted to know the real answer to: what causes that sense of deja vu? Everytime I experience, it freaks me out, because I can almost predict what's going to happen next, or what the person with me is going to say, etc. It's such an overwhelming feeling, that it's almost like being outside of your body.

What causes that?

there are a lot of theories that others mentioned-- another i've heard is that the time it takes for information to travel across the corpus callosum between the hemispheres of the brain can give you that feeling of deja vu. pretty much, you process it on one side of your brain and it takes a little bit to get to the other side, making it seem like you've been there before.
 

JustAsking

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Ok, I got the thawing bread question.

Frozen bread doesn't get soggy when it thaws, because the moisture content doesn't change with the freezing and then thawing. In other words, when thawed it should have about the same moisture content as it had before it froze.

One exception, however, and this explains the soggy corners. When frozen bread is left out in the open to thaw on a very humid day, humidity condenses on it, so it picks up moisture from the air.


New question:

Why do dogs turn around three times before they lay down?
 

SpoiledPrincess

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Why do some dogs turn three times before the sit down?

It's a primeval instinct from when they lived in the wild and had to turn to make a nice little hollow in long grass.