10 



MR. AIRY'S SUPPLEMENT TO A PAPER "ON POLARITY, ETC' 



Curves representing by their ordinates the values of (-^) cos^ [w — jj 



Values of w. 



-J. so 



R=2wir 



-90 



fSO 



•tiso 



-\ I I I. 



R=2wir + 60° 



R = 2«7r+ 120° 



R = 2«iz'+ 180° 



R = 2«7r + 240° 



R=2«7r + 300° 



R = 2B7f + 360° 



R = 2w7r + 420° • ■ «--t i i i i- t 



R = 2n7!' + 480° 



.^^.ijl TlTTTlTr^^ 



.■r<i: 



: <^^ri>.^ 



R = 2 w TT + 540° 



R = 2wir+ 600° 



R = 2w*+ 660° 



;b-^ 



:d: 



^<TT^!Tr^>^ 



-ay<? 



Values of w. 



-i-180 



