Here is the first
page of the actual paper, including the abstract which says:
Our test campaign can not confirm or refute the claims of the EMDrive
but intends to independently assess possible side-effects in the
measurement methods used so far.
So the /. title says pretty much the exact opposite of what the actual
I am still extremely skeptical that there is any actual effect. They
powered their device with a 700 watt magnatron and measured plus or
minus 20 micro-newtons of thrust. To put this in perspective,
one Newton is roughly the weight of an apple near the surface of the
Earth. If the thrust scales linearally with input power then you
would need 50,000 x 700 Watts = 35 Megawatts to levitate a single
apple. Of course the inventor claims that the thrust to power ratio
is highly non-linear so at these higher power levels you would get
a lot more thrust. I have not seen any sensible theoretical model
that explains why this would be so.
If you are using hundreds of watts to produce a handful of micro-newtons
then it is extremely likely there is no actual effect and what is being
measured is just some form of noise. This is especially true when the
so-called effect violates a primary law of physics.