Cleayn

Dy cadjin, she uillin eddyr plaaney ogheragh as plaaney elley ny essylys leeideilagh eh cleayn. Ta'n jeeigey essylagh focklit myr yn uillin ta jeant ec essylys y phlanaid as linney ta gientit trooid çheshvean y phlanaid as eh jeeraghan rish y phlaaney essylagh.

Co-earroo

Ayns dynamickyn rollageagh, foddee yn cleayn $i\,$ dy ve co-earrooit myr shoh:

$i=\arccos {h_{\mathrm {z} } \over \left|\mathbf {h} \right|}\,$

raad dy vel:

• $h_{\mathrm {z} }\,$ ny z-cho-olt jeh $\mathbf {h} \,$,
• $\mathbf {h} \,$ ny vaghtoor momentum cruinlagh ta jeeraghyn rish y phlaaney essylagh.