Opinions expressed by Entrepreneur contributors are their own. One of the essential early steps in the inventing process is creating a prototype--which, simply defined, is a three-dimensional ...

If you're building a product for your new business, you'll first need a solid prototype. This will help you better visualize your concept and start getting necessary feedback from customers or ...

Elon Musk unveiled a prototype of Tesla’s humanoid robot Optimus, part of an effort to shape perception of the company as more than just a car maker.