For years, women wearing high-heeled shoes have been noted for their appealing posture and gait. Physics and recent scientific research explain exactly what role these tall shoes have in creating the infamous high-heeled gait, or strut. Unfortunately, the dynamics behind these shoes also explains the pain associated with wear. New shoes are now being designed [...]
The quest of finding the perfect tennis racquet can be very arduous. There are so many factors to consider when choosing a racquet. One's playing style along with various features of a racquet should all be taken into consideration. The sweet spot, moment, torque, torsion, impulse reaction, shock, work, power and control are important aspects [...]
Body armor, both soft and hard, has gone through extensive changes over the years, especially in the past century. Soft body armor, constructed out of materials such as Kevlar, uses layers of synthetic fibers to stop a bullet. Hard body armor, composed of hard ceramics like boron carbide, shatters a bullet at its surface. A [...]
In man's quest to capture time, no innovation has come closer to measuring time with precision than the atomic clock. Using Cesium-133 atoms, scientists and engineers have implemented atomic clocks in a variety of experiments and systems. Since the 1960s, atomic clocks proved to be more precise than other timekeeping methods and being so, the [...]
A credit card is ubiquitous in today's fast-paced society. The invention of credit cards has revolutionized the word, perhaps due to the fact that this object has made transactions faster, more secure, and trackable. What many forget is that the most important feature of a credit card is the black stripe often found at the [...]
Almost every major metropolis around the globe has a mass transit system. When executed properly, these can be the most economically and physically efficient means of moving large populations through a city. Unfortunately, only a few of these systems in the United States have been designed or operated well enough to merit recognition; namely, Boston [...]
Unmanned Aerial Vehicles (UAVs) are a fusion of many engineering disciplines. They are the premier platform for advanced communication, surveillance, and propulsion technologies. While they have recently garnered most of their press on the battlefield, an emerging commercial sector is attempting to make them part of everyday life. Introduction Anyone paying even the slightest attention [...]
