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4 Brian/Bryan Litz - Important

 
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  #1  
Old 05-29-2012, 08:18 PM
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4 Brian/Bryan Litz - Important

Yo!!! its time to being things up a notch.

Go here: German teen solves 300-year-old mathematical riddle posed by Sir Isaac Newton | Fox News

The paradigm has changed for all of us.....

No more excuses once someone learns how to incorporate this stuff.

Kids!!!! What'll they thunk of next.......
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Old 05-29-2012, 09:31 PM
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Re: 4 Brian/Bryan Litz - Important

Quote:
Originally Posted by royinidaho View Post
Yo!!! its time to being things up a notch.

Go here: German teen solves 300-year-old mathematical riddle posed by Sir Isaac Newton | Fox News

The paradigm has changed for all of us.....

No more excuses once someone learns how to incorporate this stuff.

Kids!!!! What'll they thunk of next.......
I dont think the artical provides me with enough back ground on the equation to understand the artical. I cant wait to here Brians responce.
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Old 05-29-2012, 10:17 PM
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Re: 4 Brian/Bryan Litz - Important

Well what the hell are they waiting on? lets get it on a ballistics calculator already......................
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Old 05-30-2012, 08:27 AM
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Re: 4 Brian/Bryan Litz - Important

HMMMMMMM


I get a feeling there may be some hyperbole in that article.
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  #5  
Old 05-30-2012, 09:11 AM
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Re: 4 Brian/Bryan Litz - Important

Quote:
Originally Posted by joe0121 View Post
HMMMMMMM


I get a feeling there may be some hyperbole in that article.
yup...nobody has yet seen the actual work the kid did....lots of physicists and mathematicians have been voicing skepticism about it
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  #6  
Old 05-30-2012, 09:12 AM
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Re: 4 Brian/Bryan Litz - Important

Although it's a meaningful break-thru in the field of mathematics, this will not affect how ballistic calculations are done at all.

Here's my take.

Newton formulated his laws of motion which are basically formulas which describe how things move, collide, etc. Then he and others set about to solve the formulas so we can predict things. We've been very successful at solving the formulas in many ways. Especially with modern computational power, we can apply iterative (time stepping) solutions which solve the equations of motion in tiny (0.001 seconds or smaller) time steps which result in answers that are approximate by math standards, but that just means they're not guaranteed to be accurate to the 100th decimal place; NOTHING of practical concern. What this young German (or Indian?) boy has done is to solve the equations of motion for projectile flight in an analytical form, which is what mathematicians consider 'exact'. The solution is far more efficient since you don't have to take many small time steps, but considering modern computational resources found even in small phones, the efficiency is a non-issue in most applications.

Some more detail about the 'break-thru' solution:
* The exact analytic solution assumes constant drag coefficient, which is only close to reality in pure subsonic flight. So the equation cannot be applied accurately to supersonic flight at all.
* The 'stroke of genius' that made the analytic formula possible was a transformation of variables from positional space to 'velocity space'. Transformation of variables is a known means of solving problems in math but it takes great insight to find a transformation that will actually work.


My hat's off to the young man for his genius. Unfortunately I don't see this break-thru affecting our ability to calculate trajectories any more accurately than we do now.

In my experience, the biggest limitation with our ability to predict accurate trajectories is accurate inputs: MV, BC, atmospherics, range, actual value of scope adjustments, etc.

Sorry to be a buzz kill, but the news is well known for pumping things up.

Here's a link to a site where you can read more discussion about the actual math, by actual mathematicians:
klackity comments on Teen Solves Newton

-Bryan
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  #7  
Old 05-30-2012, 02:31 PM
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Re: 4 Brian/Bryan Litz - Important

Quote:
Originally Posted by joe0121 View Post
HMMMMMMM


I get a feeling there may be some hyperbole in that article.
Quote:
Originally Posted by bsl135 View Post
Although it's a meaningful break-thru in the field of mathematics, this will not affect how ballistic calculations are done at all.

Here's my take.

Newton formulated his laws of motion which are basically formulas which describe how things move, collide, etc. Then he and others set about to solve the formulas so we can predict things. We've been very successful at solving the formulas in many ways. Especially with modern computational power, we can apply iterative (time stepping) solutions which solve the equations of motion in tiny (0.001 seconds or smaller) time steps which result in answers that are approximate by math standards, but that just means they're not guaranteed to be accurate to the 100th decimal place; NOTHING of practical concern. What this young German (or Indian?) boy has done is to solve the equations of motion for projectile flight in an analytical form, which is what mathematicians consider 'exact'. The solution is far more efficient since you don't have to take many small time steps, but considering modern computational resources found even in small phones, the efficiency is a non-issue in most applications.

Some more detail about the 'break-thru' solution:
* The exact analytic solution assumes constant drag coefficient, which is only close to reality in pure subsonic flight. So the equation cannot be applied accurately to supersonic flight at all.
* The 'stroke of genius' that made the analytic formula possible was a transformation of variables from positional space to 'velocity space'. Transformation of variables is a known means of solving problems in math but it takes great insight to find a transformation that will actually work.


My hat's off to the young man for his genius. Unfortunately I don't see this break-thru affecting our ability to calculate trajectories any more accurately than we do now.

In my experience, the biggest limitation with our ability to predict accurate trajectories is accurate inputs: MV, BC, atmospherics, range, actual value of scope adjustments, etc.

Sorry to be a buzz kill, but the news is well known for pumping things up.

Here's a link to a site where you can read more discussion about the actual math, by actual mathematicians:
klackity comments on Teen Solves Newton

-Bryan
There you have it folks. Nothing to see here move along...


BTW Bryan. Love your book.
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"Let glorious acts more glorious acts inspire,
And catch from breast to breast the noble fire!
On valour's side the odds of combat lie,
The brave live glorious, or lamented die;" - Iliad, Book V
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