@context reciprocal_spectroscopy = rs
    1 / [frequency] <-> 1 / [length]: 1 / value / speed_of_light
    1 / [energy] -> 1 / [frequency]: planck_constant * value
    1 / [frequency] -> 1 / [energy]: value / planck_constant
    [length] -> 1 / [energy]: value / (planck_constant * speed_of_light)
    1 / [energy] -> [length]: value * (planck_constant * speed_of_light)
    1 / [length] -> [energy]: value * (planck_constant * speed_of_light)
    [energy] -> 1 / [length]: value / (planck_constant * speed_of_light)
@end
