| d | |
ln(Ie) ≈ | |
| 2 |
| d | ||
≈ R(0) * (cos(θ))2 + | (sin(θ))2 = | |
| 1 − v |
| d | d | |||
= | ln(Ip) * (1 − (sin(θ))2) + | (sin(θ))2 = | ||
| 2 | 1 − v |
| d | d | d | ||||
= | ln(Ip) + ( | − | ln(Ip))(sin(θ))2 = | |||
| 2 | 1 − v | 2 |
| d | d | 2 | ||||
= | ln(Ip) + | ( | − ln(Ip))(sin(θ))2 | |||
| 2 | 2 | 1 − v |
| 2 | ||
ln(Ie) ≈ ln(Ip) + ( | − ln(Ip))(sin(θ))2 | |
| 1 − v |