[Amy]

This is also on Ananova

Jon has baffled Big Brother bosses with an explanation of how the house's air conditioning works.

The data strategy manager complained when the cooling system broke in the boys' bedroom.

And, after leaving the diary room, he revealed the conversation to the housemates.

He said: "I explained I was a physicist not of any small intellect.

"An air-conditioning unit is just the physical manifestation of the Carnot Cycle - which is talking about heat exchange between two closed systems."

He said he was told: "Big Brother's aware of the problem and will get back to you as soon as possible."

Meanwhile, Tania has revealed she's upset at not being nominated for eviction because she will miss her sister's wedding on Saturday.

The self-confessed drama queen has not yet faced a public vote, but she told housemates she wanted to get the boot.

Her 19-year-old sister Natalie is getting married in London.

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