Hi, History of Science (in order) https://www.youtube.com/playlist?list=PLepnjl2hm9tHcapb3u2RAXQP9ag1Y1vIp === Laws of Thermodynamics: History https://www.youtube.com/playlist?list=PLepnjl2hm9tHRMTdVyJ8t9HB6TZ63hFdU === ...
Hi, exchemist, Max Planck Quantum Theory 7:25 min. Energy equals aitch times Nu [nju:/ni]. Since frequency is a number over a time (second) then the formula is not about Energy but Power (energy in one second) and Planck constant is about energy of One cycle. That is what I don't understand. It would be nice if someone explains that formula to me. Thank you.
The dimensions of Planck's constant, h, are ML²/T whereas those of energy are ML²/T². So for example the SI units of h are J-sec. As you rightly say the dimensions of frequency are 1/T, so for example Hz. Thus the dimensions of hν are those of energy, not power: J-sec x 1/sec = J. In fact, the dimensions of Planck's constant, viz. energy x time, are those of an important quantity in physics, known as "action". This is a foundational concept in Hamilton's formulation of mechanics, which is how Schrödinger approached the question of how the electron behaves in an atom and which led to his famous equation Hψ = Eψ, in which H is something called the Hamiltonian operator. But Planck derived h empirically, before that.
