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An open-ended λ/4 transmission line stub, appears as a short circuit in the network. λ/4 is halfway around the Smith chart, so the...

Before t=0, all voltages will be zero. At t=0, the instant step in source voltage, will be attenuated by the capacitive voltage divider...

No. The finger holes in the tenpin bowling ball, or the concentric rings on a lawn bowls ball, decide the axis of rotation when...

F = m a ; The rate at which a changes, determines the rate at which F changes. That holds for all derivatives of a.

The ball itself is a gyroscopically stabilised sphere. It will only be possible to make gentle changes to the curve and direction, or to...

Iron with a low carbon content, is a "soft" magnetic material. The steel used to make nails has high carbon content, which makes it a...

Just because you have a reasonable sounding explanation does not make it correct. Confounding factors should be tested for and...

How do you know that the steel nail is not magnetised?

It is at times like this, that I wish I had listened to my mother when I was young. On return, they learn quickly to partition the...

Hadrian's wall was built by the Romans, to prevent Romans entering Caledonia, (Scotland), where they would be subjected to asymmetric...

How do you know that the nail is not magnetised in some weird way?

You must not fight in the bar, but you may fight in the parking lot. You must leave the bar if you are prepared to fight, and you accept...

That scooter has solid rubber tires, so no wonder you felt the bumps! You need pneumatic tires to get that part of the suspension...

The only bumps you felt were when the small hard wheels of the scooter fell into the gap, or crossed the step difference at the gap...

Your freezer is not as cold as the space beyond Jupiter. Comets are made of ice, and have long lifetimes, unless they collide with...