"Floating above a landmine in Iraq or Afghanistan, there's a very weak, dilute cloud of vapours of explosive molecules that the bomb is made from," said the Dr Turnbull.
Dr Graham Turnbull, of the research team, said: "Floating above a landmine in Iraq or Afghanistan, there's a very weak, dilute cloud of vapours of explosive molecules that the bomb is made from.
The film wafts along for an hour and a half before expiring in a little cloud of vapour.
By measuring the comparative strengths of these reflections, the composition of a cloud of vapour can be worked out.
There are endless hikes - take a guide for all but the easiest - such as to the bubbling Boiling Lake, enveloped in a cloud of vapour.
"E-cigarettes are being marketed just like cigarettes were in the past," says Gilmore, pointing to a TV advertisement for Vype, the e-cigarette brand owned by BAT, which featured an attractive young couple running through a cityscape before leaping into a cloud of vapour promising of "pure satisfaction for smokers".
One Christmas, Stewart thought deeply about what to get Elton, or, as he says: "What do you get the man who has bought himself everything?" He decided on a novelty, portable fridge, which, on pressing a button, lit up and a bottle emerged automatically in a cloud of vapour.
The gestures are spare and impactful: a sudden rush of feet, an ecstatic spiral of gold glitter in the air, lengths of wet foliage birthed from the sleeves of Bluebeard's suit by his greedy, impulsive wife, a steady trickle of tears, a volcanic cloud of vapour, a bright flower of blood on a white shirt, a slow dance of body doubles, man and wife.
Every breath produced a cloud of vapour and the sense of entering an icy realm was overwhelming.
"Salam Aleykum," he said, his breath a cloud of vapour in the cold winter air.
In one massive synchronised movement, the throng drew on their e-cigarettes and released a gigantic, breathy cloud of vapour into the already stifling atmosphere.
