Equation (1.29) is a second order, nonlinear, vector, differential equation which has defied solution in its present form. It is here therefore we depart from the realities of nature to make some simplifying assumptions..., Bate, Mueller White, 1971 Fundamentals of Astrodynamics,
He that is good at making excuses is seldom good at anything else., Benjamin Franklin, US author, diplomat, inventor, physicist, politician, printer (1706 1790)
GotLink.plIf you do not feel yourself growing in your work and your life broadening and deepening, if your task is not a perpetual tonic to you, you have not found your place., Orison Swett Marden, (1850 1924)
I think of football as a sport the way ducks think of hunting as a sport., Bill Watterson, US cartoonist (1958 )
American can do better, and help is on the way., John Kerry, speech in 2004, US Democratic politician (1943 )
That which we obtain too easily, we esteem too lightly., Unknown, Quotations by unknown authors )