While reading a physics text, I came across an equation(adsbygoogle = window.adsbygoogle || []).push({});

[tex]l' = l + \alpha\,a[/tex], where [tex]\alpha[/tex] is the order of unity. What exactly does this phrase mean (ie if I knew l and a, what would [tex]\alpha[/tex] be?)

thanks

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# Of order unity

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