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If you threw a ball to a person ahead of you, would the ball plunge towards their feet. If you threw the ball to someone behind you...

There will be an unstable Lagrangian point line along the rotational axis. How does someone who is flying stay on that line? The rate...

Compressed air flows to the foot of a pipe while the key is pressed. Each pipe generates a different note, with harmonics, called...

True, as that would require an instant step change in pressure. But there are filtered forms of square wave that have attenuated odd...

Have you compared the weight of the energy-storage flywheel, to the weight of the equivalent batteries?

You understand the compensation requirements. I have not checked your calculations because your result is in the ballpark I expect...

Yes and no. Having investigated the possibilities previously, the first "vacuum airship" will actually be a reduced-pressure, a...

0.095 g/cm³ is perhaps a typo, that should read 0.0095 lbs/ft³. 0.0095 lbs/ft³= 0.152 kg/m³ = 152.2 g/m³. The lowest density solid foam...

Correct. 0.095 g/cm3 = 95.0 g/litre = 95.0 kg/m3.

Is there an elephant in the room? Is there a mention of the motor being in star or delta connection? Maybe the motor is stuck in star...

The length of the tube decides the fundamental. Blown air is switched into the pipe, or out of the pipe, due to pressure changes at the...

Do not overcompensate the motor inductance with capacitors as, when you turn it off, the two will become a resonant self-excited...

Keep the ground connected and the power stable at +5V. You need to dip it in oil to see a change in the output. There is no Ford Motor...

In music, for a simple system, the second harmonic of the fundamental, is usually the first overtone. The third harmonic then is often...

The blown airflow switches path at the upper lip, (labium), alternately delivering air into and out of the pipe. That is a form of...