Metric vs. other measurement systems - chart

[MeJasonT]

Now you see i dont find either equation all that easy
C=(F-32)*5/9, F=(C*9/5)+32, C=F*1.8+32, F=(C-32)/1.8 or for every 10C. Zero starts at 32. So for 10 degrees C, its 32+18 etc
they are nasty nasty numbers lol.

Metric is ok but i couldnt eat a whole one, i pretend i know both but its probably more like mix and match (on the same drawing).
ive taken up machining and still struggle with the 2 thou thing when its im mm its no better, i mean what is 0.0508 try looking at that on a dial gauge - at least 2 thou sits on the increment tick mark. Im actuall just aiming for it as opposed to being precise. I was always confused by Imaginary numbers, i mean what is that all about - next we will be doing math with non existant numbers. My maths teacher did try to convince me that algebra was just like using ohms law or any other electronics formule. Naaa didnt see that. substitution, i got that but seeing as 2x + (3x-7y) in a real world senario. Just when you got a grasp of it, you went into an exam and the bloody maths questions were in words. if Jack has 2 oranges but the oranges are cut into segments of 3 in one orange and 7 in the other orange calculate Jacks orange. I couldnt give 2 hoots about Jacks orange. He's got 2 frigging oranges. I have never in my life written out an equation in a paragraph of words. A key of constants/variables etc yes but never a page of blurb. Feeds and Speeds is my current obsession. I love it when people try to show their years of wisdom on forums and tell the poor sod asking the question to just enter the values into the formulas. Funny thing about math, if you dont have all the facts/variables equations are bloody impossible to solve. Chip load - unless you know chipload for a tool you wont get the feedrate and without the feedrate you cant find the chipload. so if you buy a cutter off Ebay the chances of getting the toothload is impossible. There is a frig granted but that isnt in the official taught /published formulas. The moto is cut twice measure once lol.

True wizards are those who own imperial machines but work in metric

[mklotz]

Now you see i dont find either equation all that easy
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... I was always confused by Imaginary numbers, i mean what is that all about - next we will be doing math with non existant numbers. ... Just when you got a grasp of it, you went into an exam and the bloody maths questions were in words. ...

Given your discomfort with math, here's a bit that should raise your hackles...

It's a proof of Euler's equation using no words at all. It's a proof that an irrational number raised to an imaginary, irrational number can equal a negative integer.

And before you rant about it being a useless result, ask an electrical engineer.