MilkClouds

from math import *

N = 6
mu0 = 4 * pi * 1e-7 # 𝜇0 = 4𝜋 × 10−7 T ∙ m/A
w = 2.9e-2 # 2.9cm
d = 11.6e-2 # 11.6cm
n = 550 / (12e-2) # 감은수 550, 길이 12cm
l = 12
R = 4.15