Why is the wall penetration effect of 5G signal worse than 2.4G signal?

Why is the wall penetration effect of 5G signal worse than 2.4G signal? 

　　When the distance to the router is the same, the 5G signal is weaker than the 2.4G signal, which is determined by the physical characteristics of electromagnetic waves: the longer the wavelength, the less attenuation, and it is easier to bypass obstacles and continue to spread. The 5G signal has a high frequency and short wavelength, while the 2.4G signal has a low frequency and a long wavelength. Therefore, the 5G signal has a greater attenuation when passing through obstacles, and the wall penetration capability is weaker than that of the 2.4G signal. This is the case with all dual-band wireless routers.

　　 Note: The following is the loss formula for 2.4G and 5.8G propagation in free space (where F is the frequency, the unit is MHz; D is the distance, the unit is km)

　　The attenuation formula of wireless electromagnetic waves in free space: L=32.5+20lgF+20lgD. 

　　 2.4G frequency band attenuation formula: L1=100+20lgD;

　　 The attenuation formula for the 5.8G frequency band: L2=108+20lgD.

　　 The above formula shows that the attenuation of 5.8G is higher than that of 2.4G, and the corresponding coverage distance is smaller.