Hydrogen in four dimensions, exactly, on ATOM⁴'s terms (the force pinned at 1/r): the hydrogen chapter. Pick n, then s, p or d, then which of its (l + 1)² orbitals. Drag the atom to turn it. The pad twists your slice into w (keys J L, I K: the screen's right and up), the lever moves it ana and kata (R F), ⊞ or Z squares it up. electrons throws electrons at the cloud: the chart counts how far out they land. how it's solved · kata · WAVELAB