Tuesday, August 9, 2016

My Amazon Kindle Books

My Amazon shop Kindle epub books :

Origami project with plastic sheet to make baking powder submarine




Plastic drinking straws electric boat and submarine




Homemade boat or ship and torpedo toys powered by Marangoni effect (different surface tension) 




Do it yourself wooden laser pistol and laser pointer, using laser beam for dry shooting practice.




Marangoni effect (different surface tension) power moves toy boat or ship.




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