The diagram on the right shows an observer's eye looking at a frontal extent (the vertical arrow) that has a linear size , located in the distance from point .

The energy transitions can then be symbolized by vertical arrows between the ground and excited state, that is, there is no motion along the configurational coordinates during the transition.

The vibronic transition is indicated by a vertical arrow due to the assumption of constant nuclear coordinates during the transition.

Since the electronic transition is essentially instantaneous on the time scale of solvent motion (vertical arrow), the collection of excited state chromophores is immediately far from equilibrium.

Appropriate AO and MO levels are filled with electrons symbolized by small vertical arrows, whose directions indicate the electron spins.

The vertical arrows in this diagram are those induced by composition with f and g.

"This comes a long way from the old bus stop signs that had a vertical arrow within a circle to identify it," said Termaine Garden, a Transit Authority spokesman.

Numbered vertical arrows on the bottom indicate the three gaps in the BAC contig.

That vertical arrow requires twenty-two strokes, several of which are multi-key-two or three fingers striking si- multaneously.

For the gamma rays (vertical arrows), the gamma energies are given; for the beta decay (oblique arrow), the maximum beta energy.