[csirac2]

Worryingly, the 2015 paper didn't seem to have anything about measuring the mass of the device before and after the experiment.

An old radar technician asked me to take a look... apparently "boiling" waveguides are a thing when it comes to high-power RF.

[jschwartzi]

If the waveguide boils at a certain rate at certain power levels, then it should be possible to estimate how much force this would produce. If that force is on the same order, then it's likely the reason for what we're seeing.