Air column speed against the speed of light is really negligible, 1/106, but thanks to very slow, nonzero and constant, also very uniform expansion of the air column can be formed within that very interesting and complicated resonance and interference structures.
Air safu kasi dhidi ya kasi ya mwanga ni kweli kidogo, 1/10 6, lakini upanuzi shukrani kwa polepole mno, nonzero na mara kwa mara, pia sana sare ya safu ya hewa inaweza kufanyika ndani ya resonance kuwa ya kuvutia sana na ngumu na miundo ya kuingiliwa.