On the Discrepancy of Coronal Magnetic Fields in Solar Optics and Radio

The discrepancy on the coronal magnetic field between solar optics and radio is analysed by using magnetic fibril concept with filling factor and fractal structure model. The magnetic field of about 100 G considered in solar optics is the mean value in a large scale, and that of about 1000 G in solar radio should be the value of fine structures inside “macro” loop.