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The energy stored might be sufficient to cause a risk to the heart. It is allowable to touch a Van de Graaff generator but not to add a...

In UK schools we are not allowed to use Leyden Jars with static machines. Your experiment amounts to the same thing. Capacitor...

For a resonant cavity, the magnetic and electric fields are each in the form of a standing wave. This is a wave that stands still. If...

The only pressure required is the head of water from the water level in the top tank to the ground. Not very much. However, if a leak...

I have tried to read all the replies, but no one seems to have suggested Osmosis. When the clay is placed in bag of water, salts from...

Regarding the spacing of resonance as you vary the wavelength (or frequency). Imagine a low frequency analogy. Take transmission line 5m...

If you change wavelength, the resonances actually occur at fixed intervals of frequency, so are not exactly uniform wavelength intervals.

Isolated systems are used for safety on construction sites etc. A transformer is used where the secondary is not connected to earth. A...

Isn’t the system statically indeterminate? [EDIT - No it isn't! See later posts.] Considering only external forces, it is trivial to...

I was assuming that the supports were knife edges so that the structure could lift off.

A reaction in the hinge O has two components. A reaction in the hinge A has only a vertical component. We have three unknowns. Find them...

Good afternoon, This is not Paul, but rather his son Robert. I am very sad to write here that my dad passed away on Saturday...

My ideas are as follows:- If we are to ignore weights, the structure cannot be in equilibrium. So we must assign a weight W to the total...

Is the spectrum analyser set to a very narrow bandwidth so that the problem is exaggerated? You seem to obtain a bandwidth of just a few...

An example of a device where positive and negative charges flow in opposite directions is the demountable discharge tube made by...