Many of the ideas that we are sent to review use some form of technology to make them work. Over the years we have found it helpful for clients to produce some short articles on various technology themes. For example, because of our own history we receive many ideas with wind-up devices so one of the articles explains what is possible with wind-up technology. For people needing a more technical explanation of the science describing how some machines work we have included articles on physics and energy. We also get ideas for perpetual motion machines and we have included three typical types of perpetual motion machine to explain why they don't work.For those who would like a more scientific explanation of why they don't work there is an article on basic thermodynamics. A difficult sounding concept but we hope that our explanation will be understandable. Click the buttons at the top of this page to see more.