One of the most revolutionary kitchen tools we have today was accidentally discovered and then invented in the 1940s and ’50s. The microwave oven, whose origins has nothing to do with cooking, dates back to World War II. According to IdeaFinder.com: During World War II, two scientists invented the magnetron, a tube that produces microwaves. [...]
One of the biggest differences between electrical engineering and mechanical engineering is the intuition that is developed for the physics. As a mechanical engineer, I fare better by dealing with what I can see (usually on a length-scale of a meter or so). Electrical engineers, at least when it comes to electric circuits, can only [...]
When it comes to heat transfer science, two main types are conduction and convection. Heat transfer via conduction can occur in substance of any phase (solid, liquid, or gas), but is mostly seen in solids. On the other hand, convective heat transfer occurs only in fluids (liquids and gases). Both types of heat transfer are [...]
If you watch a weather report on television, you may have heard of the term “Doppler radar” during weather forecasts. What exactly is a Doppler radar? Also, fundamentally, what is the Doppler effect? The Doppler effect is a phenomenon that can be observed with a moving object which is emitting waves. Many objects emit waves: [...]
Let’s take a look back at tensile stress, from back in February. We said that the axial pulling of a isotropic bar creates axial or tensile stress. Some definitions: Axial – lengthwise along the bar Isotropic – often a metal, where the “crystal” structure in the material is uniform (wood and carbon fiber are not [...]