They set the photons oscillating in a chamber which forces the wavelengths to change as the photon goes from one end to the other. This alters the group velocity of the photons, which changes the radiation pressure as the photons strike each end of the cavity.
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Someone needs to explain how you change the wavelength of a photon without some non-linear mechanism. Are we really talking about somehow filtering the AVERAGE wavelength of a broadband energy source as a function of the direction of travel in the cavity?
“Someone needs to explain how you change the wavelength of a photon without some non-linear mechanism. Are we really talking about somehow filtering the AVERAGE wavelength of a broadband energy source as a function of the direction of travel in the cavity?”
They say it’s just the geometry of the conical resonating chamber thats force the microwaves to change wavelength, which then alters the group velocity of the waves in a relativistic effect.