Ad. 3

Δγ =Δδmin = 2*2’ = 2 * 0,00029 = 0,00058 radiana

γ	δmin	n	Δn	n±Δn	kolor
stonie	radany	stopnie	radiany
54º 44'	1,04254	47º 51'	0,83514	1,62029	0,00059
		48º 6'	0,83950	1,62287	0,00059
		48º 43'	0,85027	1,62921	0,00060
		50º 37'	0,88343	1,64845	0,00061
		51º 27'	0,89797	1,65675	0,00061

$$n = \ \frac{\sin\frac{\gamma + \text{δmin}}{2}}{\sin\frac{\gamma}{2}}$$

$$n = \ \sqrt{\left| \frac{\partial n}{\partial\gamma} \right|^{2}*{\gamma}^{2} + \left| \frac{\partial n}{\partial\text{δmin}} \right|^{2}*{\text{δmin}}^{2}}$$

$$\frac{\partial n}{\partial\gamma} = \ \frac{\cos\left( \frac{\gamma + \text{δmin}}{2} \right)*0,5*sin\frac{\gamma}{2} - \sin\left( \frac{\gamma + \text{δmin}}{2} \right)*cos\frac{\gamma}{2}*0,5}{\sin^{2}\frac{\gamma}{2}}$$

$$\frac{\partial n}{\partial\text{δmin}} = \ \frac{\cos\left( \frac{\gamma + \text{δmin}}{2} \right)*0,5}{\sin\frac{\gamma}{2}}$$