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  #1541  
Old 28.10.2014, 17:34
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Re: Ask a Scientist

Not only is the universe expanding, but the expansion is accelerating.
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  #1542  
Old 28.10.2014, 23:06
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Re: Ask a Scientist

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What do you mean by "originally bumpy"? In the sheet analogy, mass/gravity is causing the bumpiness. Do you mean that space-time would be bumpy without anything causing it?

...
Yes, thats just my question, why does the sheet have to start off smooth? why could it not be already deformed causing the appearance of gravity without a mass present.
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  #1543  
Old 17.01.2015, 09:46
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Re: Ask a Scientist

I was asked a question I didn't really know how to answer more profoundly than just - it protects our brain and makes us attractive to one another.

Why can hair grow long on our heads? Why do I want to have it long, there must be some natural push...motivation.
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  #1544  
Old 24.01.2015, 14:15
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Re: Ask a Scientist

Another random question...


Why does everything smell different for a little while, after one has eaten Thai food?
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  #1545  
Old 24.01.2015, 14:18
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Re: Ask a Scientist

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Another random question...


Why does everything smell different for a little while, after one has eaten Thai food?
Use other toilets for a while; not your home one.
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  #1546  
Old 26.01.2015, 22:59
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Re: Ask a Scientist

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I was asked a question I didn't really know how to answer more profoundly than just - it protects our brain and makes us attractive to one another.

Why can hair grow long on our heads? Why do I want to have it long, there must be some natural push...motivation.
Here is a good explanation - http://evoandproud.blogspot.ch/2008/...r-so-long.html
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  #1547  
Old 26.01.2015, 23:00
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Re: Ask a Scientist

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Another random question...


Why does everything smell different for a little while, after one has eaten Thai food?
What do you mean by smells different? Like you can't smell it or the smell changes for you after you eat the food?
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  #1548  
Old 26.01.2015, 23:25
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Re: Ask a Scientist

Ok doctors and scientists: Is there any merit to the claim, (which i've only ever heard in CH, by the way), that a breeze or the wind cause headaches and tiredness? muscle soreness?

I like to think that this is a cultural myth, subconciously based on a history of contempt for the foehn after having caused numerous firestorms in Altdorf over the centuries...

Sure, windy conditions lead to a faster rate of dehydration and so on. Is there anything else to it? Or is my wife as crazy as the rest of them?
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  #1549  
Old 26.01.2015, 23:37
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Re: Ask a Scientist

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Ok doctors and scientists: Is there any merit to the claim, (which i've only ever heard in CH, by the way), that a breeze or the wind cause headaches and tiredness? muscle soreness?

I like to think that this is a cultural myth, subconciously based on a history of contempt for the foehn after having caused numerous firestorms in Altdorf over the centuries...

Sure, windy conditions lead to a faster rate of dehydration and so on. Is there anything else to it? Or is my wife as crazy as the rest of them?
There was some research about how change in weather could be a trigger for migraines. Cold winds can cause neck stiffness in the morning.

I cannot advise you on your wife though
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  #1550  
Old 26.01.2015, 23:52
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Re: Ask a Scientist

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There was some research about how change in weather could be a trigger for migraines. Cold winds can cause neck stiffness in the morning.

I cannot advise you on your wife though
hmm..i dont have a thanks button for some reason, but thank you drkarthiks...
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  #1551  
Old 05.02.2015, 15:53
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Re: Ask a Statistician?

I have N boxes, all of which weigh either 0g or 100g.

It is possible all are either 0g or all are 100g.

For a given value of N, how many boxes must I weigh before I am 95% confident in the proportion of empty and full boxes?

I have never found a simple explanation to a statistical question.

I have a practical use for the answer.

I wonder how one would make this Bayesian?
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  #1552  
Old 06.02.2015, 21:30
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Re: Ask a Scientist

Now that's a tough question. The reason that you have seen no simple explanation is that there isn't one . As if the problem as stated was not tough enough you ask how to state it in Bayesian form.... Luckily, I can get started because "Doing Bayesian data analysis" is on my bookshelf (don't let the cute puppies on the cover fool you) and your problem is the same as that of predicting the result of tossing a biased coin. For a start you need to revise Bernoulli (Swiss!) distribution and beta distribution (which is the correct conjugate prior probability distribution). That being said, I have still not got an answer to your questions. Watch this space, but don't hold your breath .
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  #1553  
Old 07.02.2015, 00:27
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Re: Ask a Scientist

OK, the exact answer to the non-Bayesian version was published in 2011 in a short paper on the open source physics archive: www.arxiv.org. Article-id 1105.1486.
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  #1554  
Old 11.07.2015, 14:43
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Re: Ask a Scientist

Three biggish volcanoes have opened up recently, Japan, Indonesia, Chile!
Is this a random event or linked?
Is it likely more will open up?
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  #1555  
Old 13.09.2015, 12:20
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Re: Ask a Scientist

Why did my muffins bake half the time than usually? Same temp, same size, same recipe.
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  #1556  
Old 13.09.2015, 14:16
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Re: Ask a Scientist

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Why did my muffins bake half the time than usually? Same temp, same size, same recipe.
Because a partial solar eclipse is currently happening?
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  #1557  
Old 13.09.2015, 14:19
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Re: Ask a Scientist

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Why did my muffins bake half the time than usually? Same temp, same size, same recipe.
If this means 'Why did my muffins bake in half the time they usually take? The answer is -Timer needs new battery.
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  #1558  
Old 13.09.2015, 14:19
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Re: Ask a Scientist

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Why did my muffins bake half the time than usually? Same temp, same size, same recipe.
Did you remember to check the middles with a toothpick or fork? Maybe you're just half-baked today...
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  #1559  
Old 13.09.2015, 14:59
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Re: Ask a Scientist

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Because a partial solar eclipse is currently happening?
I like this, poetic. Plus, the eclipse is true, wonder if we can see it here.

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If this means 'Why did my muffins bake in half the time they usually take? The answer is -Timer needs new battery.
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Did you remember to check the middles with a toothpick or fork? Maybe you're just half-baked today...
Well, no - they are done done.
My oven is tricking me. Will check the thermostat next time.
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  #1560  
Old 20.12.2015, 10:11
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Re: Ask a Scientist

Does anybody know if there is still bones or tissue (or other animal parts) used in glue?
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