Simple question, or is it...

An amp which has no load = an amp with no speaker connected to it.

A test load is a resistor or complex circuit put on the output of an electrical device to measure it's' performance under standard operating situations.

See the Stereophile simulated speaker load.

Having a load on the outputs is the opposite of having nothing connected.

A very difficult load is one with low impedance and/or high current / voltage phase angles.

A "big load" is one which draws, and therefore dissipates, a lot of power.

On any given AC circuit, more load = more current = lower resistance/impedance.

Think of a hair dryer.  1500 Watts is a big load, and caused by a low resistance

That’s literally the meaning of E=mc2. Energy, a force, equals mass, a thing. Times the speed of light squared. So you can say its a force or a charge, or you can say its a thing or a medium. It all depends on your point of view.

The thing I like most about Miller is how he teaches us to be worse versions of ourselves. As he’s said to my posts I now return the favor:

Miller’s interpretation of the Einstein’s energy-mass equivalence formula is utter rubbish.


Unlike Miller I’ll point you to sources to prove my point of view. Please read the section "Meaning of the strict formula" in the wikipedia article here: https://en.wikipedia.org/wiki/Mass%E2%80%93energy_equivalence

Best,
E