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For the love of trig.
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The stuff in the upper right-hand corner looks like the equations that relate what's called the "true" orbit and the "apparent" orbit of one object going around another. The picture corresponding to the equations is on the left.
The equations in the lower right-hand corner look like the rotation of one set of coordinates,
(Xf , Yf ), to another set (Xα, Yα), and vice-versa.
Lower right looks like calculus, relating the coordinates to the velocity and acceleration of the coordinates. X ̇f "dot" is the velocity of the object in the direction of the Xf coordinate, for example.
Great stuff. Thanks for posting.
Makes my hair stand up, thinking of putting people in rockets back then.
And how few people there are who can still mathematics without a computer.
Let alone BH writing code for the finance sector! ;-)!
Warmest
Tim Bailey
Skeptical Measurer & Audio Scrounger
"And how few people there are who can still mathematics without a computer."
No shit. forty years ago you could have asked me what was 107 times 42 and I would have an answer before someone else could even get heir calculator out of their pocket.
but I am losing it, and I mean really losing it. I am having trouble understanding schematics and all that as well. My mind is not as sharp as it used to be. I would still pit it against the average "Man on the street" but I know I ain't what I once was.
So I guess y'all will have to bear with me until I meet with some sort of fate. Sorry. But I do know it, it's just that now I am more loquacious and opinionated.
Yeah, and your typing skill is slipping as well.
In another 8 years man landed on moon and came back! What an achievement.
Bill
I sent that to my rocket scientist (really) friend.
Believe this is the math to calculate how out-of-round the Earth is. Important for ballistic missiles.
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