The temperature near your skin is greater than the temperature on the surface of your clothes, mainly due to a layer of trapped air near your body.

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The flash itself is actually a second image of the sun, caused by refraction of its light through the layer of air closest to the sea.

ECONOMIST: In a flash

As a result there is very little scattering of light as it passes from the air into the layer of nanotubes.

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As a result of the improvement, dim and double images are cut off by eliminating the air gap layer between the front glass and Plasma panel.

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And with each new layer of stone the air got warmer and began to smell, at first something like a laundry hamper, then more like inside the mouth of a sun-baked cadaver.

NEWYORKER: Ziggurat

Kindle Fire HD solves this air gap problem by laminating the touch sensor and the LCD together into a single layer of glass, creating a display that's easy to view even in overhead light, and reducing glare by 25% relative to iPad 3.

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The rear of the fuselage is also sculpted to sweep air into the engines using a process known as boundary-layer ingestion.

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