Bending of VHF radio waves

If we really want to get technical, the VHF waves do not bend around the curvature of the earth due to gravity. The slight observed bend is due to "tropospheric ducting" which is refraction due to temperature gradients in the atmosphere. See https://en.wikipedia.org/wiki/Very_high_frequency Also, the text mentions signals going around land to some extent by "refracting off land masses". It would be more accurate to say "diffracting around land masses".