No.286
So I was watching some of the Black Science Man Cosmos episodes, and there's something weird I can't figure out:
In Herschel's discovery of infrared light, why did the infrared thermometer become hotter than the ones in the visible part of the spectrum, when visible light from the sun has higher intensity (pic related)?
Also dumb science questions general, I suppose.
No.291
Cause ir waves are the right size to interact w molecular bonds & causes them to wiggle aka heat
No.292
>>291That is pretty cool.
I wonder if the human conception of
red = hot
blue = cool
is in anyway correlated with this fact, or if it is just a coincidence
No.313
>>292It's probably because fire is red and ice is blue.
No.1722
I have a dumb science question.
Curve/data fitting.
Specifically in gnuplot, which doesn't seem to have fancy auto generators and so on.
I am a total math noob, a true pleb, and actually way over my head by trying this, but I'm just too curious to let it slide.
What is the process you gods use to determine fitting/trendline functions for data?
Are there guidelines for it?
For example, my naive plotting hymen breaking project with a very naive dataset:
year vs price
1910 1
1920 7
1930 2
1940 6
1950 3
1960 4
1970 5
In my ignorance I have copypasted the following:
f(x) = a*x**b;
fit f(x) 'data' via a,b
Isn't that a power function?
The error rate is astronomical and doesn't follow the data even closely.
Is it because I have such a jumbled dataset? With high fluctuations?
Is it actually possible to predict a trend?
That's where my question comes in.
Can you explain to me, like you would explain to a mentally challenged person, what to look for in data sets and based on that what kind of steps to choose from?
A rought outline would is fine too.
You don't have to write an essay for me.
Just some general guidelines, if that is even possible.
No.1725
>>1722alternatively.
could I get an explanation what fitting is used for?
Maybe that will make it easier for me to get behind the whole concept.
No.1727
No.1744
File: 1424400880922.png (309.68 KB, 994x583, 994:583, Screenshots_2015-02-20-02-….png)
>>1722>>1722Make a triangle and take a ratio ?
No.1765
>>1722I'm sorry but I'm not sure what the fuck you're on about. But maybe integration would be helpful here.
No.1774
>>1722Least squares method?
No.2230
How did the Nature know how to put T, H and C together and make the plant? There's like a billion combinations of those letters but she chose that? How does that work