So does the material's hardness, and especially its surface condition.

ECONOMIST: Aircraft fatigue

Placing a heat protective barrier between the skin and laptop, or placing the computer on a hard surface is generally recommended to prevent the condition from developing.

FORBES: Some Like It Hot

Although it has reopened, some parts of the road surface were reported to be in a poor condition, BBC Travel said.

BBC: A39 in Cornwall reopens after river bursts banks

Harry Redknapp became the latest football manager to heavily criticise the pitch's condition after he saw his Tottenham team and opponents Portsmouth struggle on a slippery surface which cut up all too easily when the two sides clashed in the second semi-final.

BBC: Wembley pitch will be relaid indefinitely up to 2023

In this, the stream of video and audio data is recorded as a series of minuscule spots on the disc's surface that have been gently fried by a laser beam and turned from their normal crystalline condition to an amorphous state that has different reflective properties.

ECONOMIST: Digital video discs

Harry Redknapp became the latest football manager to heavily criticise the pitch's condition on Sunday after he saw his Tottenham team and opponents Portsmouth struggle on the slippery surface, which cut up badly during the sides' FA Cup semi-final.

BBC: Groundsmen's group invited to Wembley pitch meeting