vapour BrE
vapor AmE *

Then the night came up in dark blue vapour from the snow.

So the water vapour will be removed from the air.

But what is the composition of the vapour at this point?

Instead, it is expected to have an atmosphere of water vapour.

The actual question is sometimes lost in the vapour trail.

He walked upon vapour, and about him were only ghosts.

But the smoke and vapour was at the level of her knees.

However just as she does so a thin vapour comes up out of the ground and becomes a door.

I was in a world apart, just myself and cloud vapour.

On impulse, he reached out and passed his hand through the vapour.

But: water vapour is also a much more important greenhouse gas.

The vapour did not diffuse as a true gas would do.

Then a vapour as if earth were breathing in and out, once, twice, for the first time.

I exposed them to nitrogen vapour for a few minutes.

Figure 3.13 shows how the vapour pressure of water increases with temperature.

This occurs when a sample has a high vapour pressure.

The world was a round room, with walls of grey vapour.

In the desert where there's very little water vapour the temperature goes down a long way at night.

At any moment, like shifting vapour, it might dissolve away.

This is the vapour pressure curve of water (see figure 3.13).

Because if they didn't, then all solid matter would simply turn to vapour.

They trap some of the vapour, allowing it to run to earth.

The whole town is drowned in white, wet vapour off the sea.

But a poisonous vapour comes out of the box, killing her.

Then somewhere in the night a radiance again, like a vapour.

All those living things who could feel the vapor came to life again.

Because of course it takes energy to move water into vapor.

I'd look up the vapor pressure of water, if I were you.

He can turn into any form of gas or vapor.

I have developed a vapor which we tried out this morning with very good results.

The vapor pressure of its own oil had been reached.

On the next page, we'll look at how all that water vapor gets up so high.

There are five main ways water vapor can be added to the air.

No man wanted a wife who kept having the vapours.

The Tiger was the first to move into the vapor.

At higher temperatures, the data are for water vapor only.

The technology at that time was for blue vapor lights.

Water vapor is an important part of the natural greenhouse effect.

"Sure, but we can use more water vapor in the air."

Does this mean that the water vapor will still pass through it?

As vapor they are not dangerous, and nothing larger can get through.

A small amount of water vapor is present in the atmosphere.

On the other hand, the vapor is heavier than air.

This vapor is like a small cloud among the fire.

We see it turn back from a vapor to a liquid.

The air contains more or less water under the vapor state.

The higher the vapor pressure the more water can be carried away by air current.

Three other employees also left the building because of the vapors.

If anyone tried it, let them think she was having a case of the vapors herself.

The name was given from the violet color of its vapor.