Other experiments have demonstrated that, at the extremely cold temperatures of a noctilucent cloud, sodium vapor can rapidly be deposited onto an ice surface.

He could make things out fairly clearly in the glow of the sodium vapor lights ringing the buildings in orange-tinged pools.

His thesis was on the scattering of light in sodium vapor.

Her face was ashen beneath the sodium vapor lights of the parking lot.

On the next street under the rose light of the sodium vapors, a man was making his unsteady way along the edge of the gutter.

In the case of sodium vapor, they are twice as efficient as normal fluorescent bulbs.

They rise vertically for fifty miles or so, trailing a thread of sodium vapor behind them.

Even nowadays the Survey uses test rockets with trails of sodium vapor.

- Half a pound of sodium vapor a week!

Willis, whose specialty was magnetism, suggested that Rabi write his doctoral thesis on the magnetic susceptibility of sodium vapor.