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10 ideas about #heat have been added on IdeaMill.
The second law of thermodynamics
The idea that heat cannot pass from a colder to a hotter... Read more
![The second law of thermodynamics](https://ideamill.info/wp-content/uploads/second-law-joke.jpg)
Door in a door for children – save on heating costs
Imaging a smaller door inside a normal internal room door. It has... Read more
![Door in a door for children – save on heating costs](https://ideamill.info/wp-content/uploads/kids-door.jpg)
Electric blanket “Cold sheets” for cool nights in hot climates
Can’t afford air conditioning? a sheet that works like a fridge to... Read more
Mobius Scarf – a scarf that doubles in length when you unzip it down its length
The mobius strip is shaped like an elastic band but with one... Read more