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.

She sheel eh yn art shoh. Cur lesh, dy yannoo foays da'n Wikipedia.