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What did you learn today?

Posted Jan 18, '14 at 2:07am

MacII

MacII

1,369 posts

An area stays radioactive sometimes for thousands of years until its half life has decayed to a safe level. To be precise.

I think a substance's half-life is precisely when those qualities have halved, to be precise ;)

I also learnt today that Google is going to be saving lives with it's contact lenses that detects blood sugar levels, heart rate etc.

And, that apparently they've been eavesdropping on our medical data for advertizing purposes: Canada says Google broke law by snooping health info to serve ads.

I've a weekend ahead of learning all about humus (soil); wonder how some 16+ hours of full-on attention will go on me these days :| It's honestly been quite a while. Plus, catering to the attendants. Wish me luck.

 

Posted Jan 18, '14 at 4:24am

Ernie15

Ernie15

12,548 posts

Knight

I learned that Teddy Bear Picnic Massacre is one of the worst flash games I've played in years, simply because of how little effort the programmer(s) seemed to have put into crucial aspects of the general gameplay.

It's almost as bad as Flagman.

 

Posted Jan 18, '14 at 12:33pm

IceClaw247

IceClaw247

673 posts

I think a substance's half-life is precisely when those qualities have halved, to be precise ;)

That is exactly what I said. A radioactive atom with stay radioactive until it's half-life under goes enough decaying to reach safe levels. Here is a table from Wikipedia displaying an example of the typical decaying of a radioactive atom.

Number of
half-lives
elapsed    Fraction remaining    Percentage remaining
0                        1/1                         100   
1                        1/2                          50   
2                        1/4                          25   
3                        1/8                        12.5
4                       1/16                      6.25
5                       1/32                       3.125
6                       1/64                         1.563
7                       1/128                       0.781
...                         ...                          ...
n                       1/2n                   100/(2n)

 

Posted Jan 18, '14 at 1:02pm

jeol

jeol

3,565 posts

You mean 1/(2^n), right? Because 2*7 =/= 128. Same for the third column.

Just making sure.

Today I learned that Despicable Me is pretty freakin' adorable, which I knew I would learn eventually but didn't want to watch the movie because it would be cliche...

 

Posted Jan 18, '14 at 1:12pm

SSTG

SSTG

11,056 posts

Knight

I learned that there's a Lego movie!
That should be entertaining!

 

Posted Jan 18, '14 at 1:28pm

blk2860

blk2860

3,686 posts

I learned not to try to build up a resistance to chloroform. Jk, I'm joking.

Seriously though, I learned that "selective hearing" is good when you live with annoying people.

 

Posted Jan 18, '14 at 1:28pm

blk2860

blk2860

3,686 posts

A.K.A Ignoring people.

 

Posted Jan 18, '14 at 10:45pm

themastaplaya

themastaplaya

662 posts

Today I learned that I can eat burning tortilla chips without consequence.
Feel tha fiya!!!!!!

 

Posted Jan 18, '14 at 10:50pm

xXxDAPRO89xXx

xXxDAPRO89xXx

4,047 posts

Today I learned that I can eat burning tortilla chips without consequence.

... I won't even ask.

Today I learned that my turtle's water smells very similar to sewage.

 

Posted Jan 19, '14 at 12:19am

pangtongshu

pangtongshu

8,676 posts

TIL that St. Patrick2011 day is on a monday

 
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