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Author Topic: Mind-share  (Read 3426 times)

Offline BFM_Marty

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Mind-share
« on: November 08, 2010, 04:16:23 AM »
Know something interesting?
Share it!
Simples!
SQUEEK!

Lots of people on here know interesting things about diverse subjects. Others know things that might seem obvious to them but have other people completely at sea. This thread is about everyone just posting any information that they've come across recently, think interesting or important, or even just plain zany facts.

Obviously, typical BFM rules apply - everything must be child-friendly and inoffensive, religiously, politically, culturally or otherwise. Other than that, anything goes!


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Offline -Ajax-

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Re: Mind-share
« Reply #1 on: November 08, 2010, 09:30:10 AM »
Did you know...

Looking at a statue...

If the horses front feet air both in the air, the soldier died in battle
If one of the horses feet is in the air, the soldier died as a result of injuries off the battlefield
If both feet are on the floor, the soldier died of natural causes

Yeah...

Offline RadZakpak

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Re: Mind-share
« Reply #2 on: November 08, 2010, 05:26:22 PM »
Did you know...

Looking at a statue...

If the horses front feet air both in the air, the soldier died in battle
If one of the horses feet is in the air, the soldier died as a result of injuries off the battlefield
If both feet are on the floor, the soldier died of natural causes

Yeah...

Whoa......thats like....awesome info right thar.

Quote
Whenever a child weeps, parents of that child start worrying about their behavior.   Japan Scientist invents an instrument which will tell the reason why the child weeps. It will tell why he’s weeping by recognizing his behavior and tell his parent whether he is hunger or he is feeling uncomforted due to his clothes. Inventors say its accuracy is about 96% and it will really helpful for the people who have newly born baby and not able to understand the basic necessities of their child.


Sounds awesome to me  :LOL:



Offline MrMxyzptlk

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Re: Mind-share
« Reply #3 on: November 08, 2010, 09:45:33 PM »


Courtesy of an Astronomy class I took this summer....


If left unabated our Moon will continue in its retreat* until it would take bout 47 days to orbit the Earth. Both Earth and Moon would then keep the same faces permanently turned toward one another as Earth's spin would also have slowed to one rotation every 47 days.

This appears to be the "norm" for simple planet/moon systems throughout the cosmos, and is likely the "steady state" for all such systems.

* The Moon is being pushed away from Earth by about 1.6 inches (~4 centimeters) per year and our planet's rotation is slowing.  And no, things won't fly off the planet or get heavier as a result!  :haw:


...And a NOTE, please: Let's see things posted that have valid supporting evidence rather than hearsay, k?  TYVMiA!

« Last Edit: November 08, 2010, 09:53:02 PM by MrMxyzptlk »
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Offline BFM_Kiwi

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Re: Mind-share
« Reply #4 on: November 09, 2010, 02:16:16 AM »

The coolest thing about what Mxy just said is that it is caused by "tidal friction".  The sloshing around of the tides, caused by the gravitation pull between the earth and moon, dissipates energy and as that energy is lost (turned into heat in the earth's oceans) that has to be matched (conservation of energy) by an increase in potential energy by the moon, so it moves slightly further away. 




(thanks TrkKing)


Offline MrMxyzptlk

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Re: Mind-share
« Reply #5 on: November 09, 2010, 01:56:33 PM »


...And yet COOLER is that most (not Jupiter) of the planets in our Solar System will also reach in this state, despite not having substantial amounts of liquid as we have here on Earth!

The LIQUID tidal forces on our planet have delayed this eventuality for us!  (I.e Yes, there ARE "tidal forces" on solid planets from their moons!  Since they are more "brittle, their effect is more substantial over time, and hence they "lock faces" with their planets more quickly....)


Okay.  Enough about cool, little-known gravitational effects!  ::)

 :winkgrin:

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Offline -Ajax-

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Re: Mind-share
« Reply #6 on: November 09, 2010, 02:47:10 PM »
Did you know...

Beluga whales are at the top of the food chain. A nice distinction, however, it also means they acquire the sum total of toxins in the organisms in that chain. Since PCBs and heavy metals don't break down in any organism they accumulate instead.

So when a Beluga eats a salmon that ate a crustacean that grubbed on some plant, all the PCBs and heavy metals that these organisms absorbed end up in the beluga.

Belugas, in fact, are so full of contaminants, when they are found beached they qualify as a toxic biohazard.

Yeah...

Offline MrMxyzptlk

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Re: Mind-share
« Reply #7 on: November 09, 2010, 10:37:47 PM »



I had some running socks once that got declared a biohazard....

 :winkgrin:


Did you know that - in order to more closely align the 365-day Gregorian calendar with the actual time it takes the earth to revolve round the Sun* - there are NO Leap Years on century years, UNLESS they are also divisible by 400.  [ link ]

So if you're reading this you likely have just lived through the once-in-every-several-thousand-years event of the millennial year 2000 having NOT been a leap year for that rare reason!


* The vernal equinox year is about 365.242374 days long (and increasing).

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Offline BFM_Fénix

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Re: Mind-share
« Reply #8 on: November 18, 2010, 02:40:52 PM »
Something small, yet interesting

Did you know...

That while some substances are considered to be toxic, EVERYTHING can cause negative effects in the body. For instance, some examples:
- Salt: If you put the equivalent of 1 normal spoon directly in your blood (if you try to swallow that amount of salt you would throw up normally) you die.
- Water: There was a case of someone who drank 20lt of water in half an hour. He died. Literally, you can dilute.
- Oxygen: If there is a high level of oxygen in your blood (excesive ventilation) the pH of the blood rises and you get respiratory alkalosis affecting the musles (you can get tetany)

So please, don't do anything in excess (except for thinking, you just need more nutrients)  :LOL:
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Offline Zeek

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Re: Mind-share
« Reply #9 on: January 06, 2011, 02:58:03 PM »
ok sorry i am going to WW1 history but during the war there was a metal called the Blue Max which was given to The Red Barron who was a famious pilot for Germany, who had 80 kills before he was killed.
The Blue Max was also given to captins in the navy for Germany. The person that sank the lusitania was given the reward.

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The first pilot to receive the award had to have 8 aerial victories. By January 1917 the requirements had been raised to sixteen victories. During the same conflict, the medal was also awarded to U Boat captains who had sunk 190,000 tons of enemy shipping.




*quote is from a website.

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Offline ¥Mderms¥

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Re: Mind-share
« Reply #10 on: January 09, 2011, 03:05:24 PM »
Something small, yet interesting

Did you know...

That while some substances are considered to be toxic, EVERYTHING can cause negative effects in the body. For instance, some examples:
- Salt: If you put the equivalent of 1 normal spoon directly in your blood (if you try to swallow that amount of salt you would throw up normally) you die.
- Water: There was a case of someone who drank 20lt of water in half an hour. He died. Literally, you can dilute.
- Oxygen: If there is a high level of oxygen in your blood (excesive ventilation) the pH of the blood rises and you get respiratory alkalosis affecting the musles (you can get tetany)

So please, don't do anything in excess (except for thinking, you just need more nutrients)  :LOL:

Thats interesting, as there is a record for someone eating so many bricks of salt in one day...



Offline BFM_Edison

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Re: Mind-share
« Reply #11 on: January 16, 2011, 02:54:05 PM »
What's the main reason for Jupiter not reaching the state mentioned earlier? I'm curious as to why it would apply to Jupiter but not, say, Saturn.

The Tevatron, the second highest energy particle collider next to the LHC (and thus was the highest for about 20 years) will be ceasing operations in September of this year. It's located in Illinois and it is sad that a lack of extra funding will be preventing it from continuing for three more years :(
52.87   60.07   46.40   72.73   68.23   55.10   98.27   84.73

Offline BFM_Marty

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Re: Mind-share
« Reply #12 on: January 17, 2011, 02:37:58 AM »
there are NO Leap Years on century years, UNLESS they are also divisible by 400...So if you're reading this you likely have just lived through the once-in-every-several-thousand-years event of the millennial year 2000 having NOT been a leap year for that rare reason!

2000/400 = 5.

2000 was a leap year. 1900, 2100, 2200 and 2300 are the nearest ones that won'e be.


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Offline BFM_Edison

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Re: Mind-share
« Reply #13 on: January 23, 2011, 12:29:51 AM »
Some very recent, current news. As everyone knows, there are multiple ways to add numbers to get a specific number. For example, you can get 5 by adding 2+3, 1+4, 1+1+3, and so on. While this may seem fairly trivial and useless, it actually comes up in many areas of math and physics, such as Abstract Algebra in the form of the partition function, p(n). Basically, the value of p(n) is the number of unique (up to isomorphism) ways you can add positive integers to form n, which is also a positive integer (if n <= 0, then p(n) is defined to be 0). For example, let us find p(5):

(1) 1+1+1+1+1=5
(2) 1+1+1+2=5
(3) 1+2+2=5
(4) 1+1+3=5
(5) 2+3=5
(6) 1+4=5
(7) 5=5

Thus we find that p(5) = 7. As you might be able to tell, as we go to higher values of n, this gets more and more complicated in terms of determining it this way, though you might hope that there is a simple pattern. These are the first 10 values for n=1,2,...10: 1, 2, 3, 5, 7, 11, 15, 22, 30, 42. For n=1000, p(n)=24,061,467,864,032,662,473,692,149,727,991. This is quite a large number indeed, and there isn't really any immediate pattern found, though there is an explicit function for it of sorts, it is not so simply evaluated and uses an infinite summation. However, recently (ie. the news is about 3 days old), an algebraic formula has been discovered that involves no such infinite sums and is much more powerful in determining values of p(n), which is quite a discovery. The paper on it is authored by Jan Hendrik Bruinier and Ken Ono.

Here's a link to the results of the paper: http://www.aimath.org/news/partition/brunier-ono.pdf
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Offline BFM_Kiwi

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Re: Mind-share
« Reply #14 on: January 24, 2011, 09:38:32 PM »

1, 2, 3, 5, 7, 11, 15, 22, 30, 42 looks sort like Fibonacci though, doesn't it.  Almost kinda.



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