Here is a useful and free Website that just came to my attention: Calculator Edge. It uses a fill-in-the-blanks, push-a-button approach to solving problems in a wide range of engineering disciplines: ...

November 2026 examEven after finishing your study for the First-Class Amateur Radio Operator exam, do you ever find yourself struggling to choose which formula to use from the problem statement, such ...

For those who want to organize chemical engineering calculations and terminology as a foundation for their answersThis is a ...

In electrical systems, impedance mismatches cause some of the transmitted energy to be reflected back to its source. The frequency of the signal determines the amount of energy that is reflected.

Get the latest info on technologies, tools and strategies for Design Engineering Professionals. Browse the most current issue of Design World and back issues in an easy to use high quality format.

Editor’s note: Also see Ken Coffman’s blog: The HP15C returns as an iPhone app. With the emergence of hand-sized computers, calculators have lost some of their former prominence, yet they continue to ...