Ice Cream Ball – Play for Ice Cream | The Cool Gadgets

This is about a unique way to create home made ice cream. The Ice Cream Ball is fun and it has an easy way to make ice cream.

So how does it works? You could place the ice cream ingredients inside the ball and start rolling the ball around. Play the ice cream ball for 20 minutes and you’ll have a bucket of delicious homemade ice cream!

No refrigerator needed! Your ice cream’s will vary based on the ingredients, ice/salt mix, outside temperature and shaking frequency.

Simply put the lid back when you find the ice cream have not fully formed and play the ball around for another few more minutes.

Mechanism of this Ice Cream Ball

Time for a quick lesson in the Second Law of Thermodynamics, which states that the differences between systems in contact with each other tend to even out: ie. the (cold) ice surrounding the (warmer) cream mixture will begin to melt. For ice to melt, heat has to be drawn from somewhere and in this case the melting ice absorbs heat from your ingredients and gradually lowers the temperature of the mix until it starts to freeze.

Now, without any salt added to the ice the cooling effect would be slower and the ice/ingredients would gradually reach an equilibrium slightly above the freezing point of water. This isn’t cold enough to turn your ingredients into ice cream, for which you need temperatures below -3 degrees Celsius.

By adding rock salt to the ice it makes a substance with a freezing point lower than water. This means that the ice and salt mixture must take even MORE heat from its surroundings in order to melt: the whole process accelerates and the temperature quickly drops to around -10 degrees which rapidly cools and turns your ingredients into a tasty serving of ice cream!

Price: £24.95

[ Source: FireBox ]