Calculating for photons and particles

Here are the final two pathways in which you might find power.

Pathway to identify what—photons

Whenever power is shifted by photons being emitted or absorbed, expect to find a hearting by radiation pathway: the pathway is heating by radiation.

Trade-off for how much

Both the number each second(the activity) and energy per photon(set by the frequency) set the power in the heating by radiation pathway. So you can get a high power either by choosing a high frequency or a big activity—there is a trade-off.

Pathway to identify what—particles

Whenever power is shifted by warm matter (with particles that are moving randomly) travelling, expect to find a hearting by particles pathway: the pathway is heating by particles.

Trade-off for how much

Both the number each second(the activity) and energy per particle(set by the speed) set the power in the heating by particles pathway. So you can get a high power either by choosing a high activity or a large energy per particle—there is a trade-off.