A snarky but amusingly-written article:
https://arstechnica.com/science/2018/05/nasas-em-drive-is-a-magnetic-wtf-thruster/ An excerpt:
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"And the winner is Physics, without much doubt. Even with a power of just a couple of Watts, the EM-drive generates thrust in the expected direction (e.g., the torsion bar twists in the right direction). If you reverse the direction of the thruster, the balance swings back the other way: the thrust is reversed. Unfortunately, the EM drive also generates the thrust when the thruster is directed so that it cannot produce a torque on the balance (e.g., the null test also produces thrust). And likewise, that thrust reverses when you reverse the direction of the thruster.
The best part is that the results are the same when the attenuator is put into the circuit. In this case, there is basically no radiation in the microwave cavity, yet the WTF-thruster thrusts on."
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One of the nice things about these new experiments is that they illustrate one of the important features of science: it is self-correcting. Hypothesis constructed and tested --> Experimental results published --> Folks get all excited :w: --> Other scientists perform carefully-constructed experiments to establish either repeatability or bullshit --> Bullshit established, previously excited folks now :cry:
Best -- Terry
https://arstechnica.com/science/2018/05/nasas-em-drive-is-a-magnetic-wtf-thruster/ An excerpt:
----------
"And the winner is Physics, without much doubt. Even with a power of just a couple of Watts, the EM-drive generates thrust in the expected direction (e.g., the torsion bar twists in the right direction). If you reverse the direction of the thruster, the balance swings back the other way: the thrust is reversed. Unfortunately, the EM drive also generates the thrust when the thruster is directed so that it cannot produce a torque on the balance (e.g., the null test also produces thrust). And likewise, that thrust reverses when you reverse the direction of the thruster.
The best part is that the results are the same when the attenuator is put into the circuit. In this case, there is basically no radiation in the microwave cavity, yet the WTF-thruster thrusts on."
----------
One of the nice things about these new experiments is that they illustrate one of the important features of science: it is self-correcting. Hypothesis constructed and tested --> Experimental results published --> Folks get all excited :w: --> Other scientists perform carefully-constructed experiments to establish either repeatability or bullshit --> Bullshit established, previously excited folks now :cry:
Best -- Terry
